Sonic the Hedgehog

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Sonic the Hedgehog
Created by Sega
Original work Sonic the Hedgehog (1991)
Owned bySega
Print publications
Book(s) Printed media list
Comics Comic book list
Films and television
Film(s) 2020 film
Short film(s) Web series list
Animated series Animated series list
Video game(s)
Official website

Sonic the Hedgehog [lower-alpha 1] is a video game series and media franchise created and owned by Sega. The franchise follows Sonic, an anthropomorphic blue hedgehog who battles the evil Doctor Eggman, a mad scientist. The main Sonic the Hedgehog games are platformers mostly developed by Sonic Team; other games, developed by various studios, include spin-offs in the racing, fighting, party and sports genres. The franchise also incorporates printed media, animations, a 2020 feature film, and merchandise.


The first Sonic game, released in 1991 for the Sega Genesis, was developed after Sega requested a mascot character to compete with Nintendo's mascot Mario. Its success helped Sega become one of the leading video game companies during the 16-bit era of the early 1990s. Sega Technical Institute developed the next three Sonic games in addition to Sonic Spinball (1993). After a hiatus during the unsuccessful Saturn era, the first major 3D Sonic game, Sonic Adventure , was released in 1998 for the Dreamcast. Sega exited the console market and shifted to third-party development in 2001, continuing the series on Nintendo, Xbox, and PlayStation systems.

While Sonic games often have unique game mechanics and stories, they feature recurring elements such as the ring-based health system, locations, and speedy gameplay. Games typically feature Sonic setting out to stop Eggman's schemes for world domination, and the player navigates levels that include springs, slopes, bottomless pits, and vertical loops. While Sonic and Eggman were the only characters introduced in the first game, the series would go on to have a large cast of characters; some, such as Miles "Tails" Prower, Knuckles the Echidna, and Shadow the Hedgehog, have starred in spin-offs. The franchise has been represented in crossovers such as Sega All-Stars and Nintendo's Super Smash Bros. series.

The franchise branched out into other media in the early 1990s. DIC Entertainment produced three Sonic-based animated series between 1993 and 1999, while Studio Pierrot released a two-part original video animation, localized in North America as Sonic the Hedgehog: The Movie , in 1996. Other Sonic animations include TMS Entertainment's Sonic X (2003–2006) and Genao Productions' Sonic Boom (2014–2017). Archie Comics, Fleetway Publications, and IDW Publishing have published Sonic comic books, with the Archie series being the longest-running comic based on a video game. The 2020 Sonic film, distributed by Paramount Pictures, grossed over $300 million worldwide and is the highest-grossing film based on a video game in US box office history; a sequel is set for release in 2022.

Sonic the Hedgehog is Sega's flagship franchise and one of the bestselling video game franchises, grossing over $5 billion by 2014 and selling 140 million by 2016. Series sales and free-to-play mobile game downloads totaled 920 million by 2019. The Genesis Sonic games have been described as representative of the culture of the 1990s and listed among the greatest of all time. Although later games have been criticized for a perceived decline in quality compared to earlier installments, Sonic is influential in the video game industry and is frequently referenced in popular culture. The franchise is known for its passionate fandom that produces unofficial media, such as fan art and fangames.


Conception and Genesis games (1991–1995)

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Naoto ohshima gdc 2018.jpg
Sonic the Hedgehog co-creators: programmer Yuji Naka (left) and artist Naoto Ohshima (right)

In 1990, Sega of Japan president Hayao Nakayama decided Sega needed a flagship series and mascot to compete with Nintendo's Mario series. Nintendo had recently released Super Mario Bros. 3 , at the time the bestselling video game ever. Sega's strategy had been based on porting its successful arcade games to its 16-bit console, the Genesis; however, Nakayama recognized that Sega needed a star character in a game that could demonstrate the power of the Genesis's hardware. [1] An internal contest was held to determine a flagship game and company mascot, [2] [3] with a specific focus on the American audience. [4] Among the various teams working on proposals were artist Naoto Ohshima and programmer Yuji Naka. [5] :20–33; 96–101 The gameplay of Sonic the Hedgehog (1991) originated with a tech demo created by Naka, who had developed an algorithm that allowed a sprite to move smoothly on a curve by determining its position with a dot matrix. Naka's prototype was a platform game that involved a fast-moving character rolling in a ball through a long winding tube. [6] Sega management accepted the duo's project and they were joined by designer Hirokazu Yasuhara. [5] :20–33; 96–101 [7]

After Yashura joined Naka and Ohshima, their focus shifted to the protagonist, who Sega hoped could become its mascot. [5] :20–33; 96–101 The protagonist was initially a rabbit able to grasp objects with prehensile ears, but the concept proved too complex for available hardware. The team moved on to animals that could roll into a ball, and eventually settled on Sonic, a teal hedgehog created by Ohshima. [1] [2] Naka's prototype was then fleshed out with Ohshima's character design and levels conceived by Yasuhara. [6] Sonic's color was chosen to match Sega's cobalt blue logo, and his shoes evolved from a design inspired by Michael Jackson's boots; the red and white shoe color was inspired by Santa Claus and the cover of Jackson's 1987 album Bad . His personality was based on Bill Clinton's "can-do" attitude. [8] [9] [10] [11] The antagonist, Doctor Eggman, was another character Ohshima had designed for the contest. The development team thought the abandoned design was excellent and retooled the character into a villain. [12] The team took the name Sonic Team for the game's release. [13]

An edition of the original model of the Sega Genesis Sega-Genesis-Mod1-Bare.jpg
An edition of the original model of the Sega Genesis

Although Sega of America CEO Michael Katz was certain that Sonic would not catch on with American children, [14] [15] Katz's replacement, Tom Kalinske, arranged to place Sonic the Hedgehog as the pack-in game with the Genesis. [16] [17] Featuring speedy gameplay, Sonic the Hedgehog received critical acclaim, [18] [19] greatly increased the popularity of the Sega Genesis in North America, [20] and is credited with helping Sega gain 65% of the market share against Nintendo. [8] Naka was dissatisfied with his treatment at Sega and felt he received little credit for his involvement in the success. He quit but was hired by Mark Cerny to work at the US-based Sega Technical Institute (STI), with a higher salary and more creative freedom. Yashura also decided to move to STI. [21] [20] STI began work on Sonic the Hedgehog 2 (1992) in November 1991. [21] Level artist Yasushi Yamaguchi designed Sonic's new sidekick, Tails, a flying two-tailed fox inspired by the mythological kitsune. [2] Like its predecessor, Sonic the Hedgehog 2 was a major success, but its development suffered from the language barrier and cultural differences between the Japanese and American developers. [22] While STI developed Sonic 2, Ohshima led a team in Japan to create Sonic CD for the Genesis's CD-ROM accessory, the Sega CD; [23] it was conceived as an enhanced port of Sonic 2, but eventually evolved into a separate project. [24]

Once development on Sonic 2 concluded, Cerny departed and was replaced by Roger Hector. Under Hector, STI was divided into two teams: the Japanese developers led by Naka, and the American developers. [22] The Japanese began work on Sonic the Hedgehog 3 . [25] Sonic 3 was initially developed as an isometric game using the Sega Virtua Processor (SVP) chip, but was restarted as a more conventional 2D game after the SVP was delayed. [4] The game introduced Sonic's rival Knuckles, created by artist Takashi Thomas Yuda. [5] :51; 233 Due to an impending promotion with McDonald's and cartridges size constraints, the project was split in two: the first half, Sonic 3, released in February 1994, while the second, Sonic & Knuckles , launched a few months later. [26] The Sonic & Knuckles cartridge contains an adapter that allows players to connect it to Sonic 3 so the game can be experienced as intended. [27] Sonic 3 and Sonic & Knuckles, as with their predecessors, were acclaimed. [28] [29] [30] When Sega management realized Sonic the Hedgehog 3 would not be completed in time for the 1993 holiday shopping season, it commissioned the American team to make a new game, the spin-off Sonic Spinball . [31] While Spinball was poorly received, it sold well and helped build the reputation of its developers. [21]

A number of Sonic games were developed for Sega's 8-bit consoles, the Master System and the handheld Game Gear. The first, an 8-bit version of the original Sonic, was developed by Ancient to promote the Game Gear and released in December 1991. [32] Aspect Co. developed most of the subsequent 8-bit Sonic games, beginning with a version of Sonic 2. [33] Other Sonic games released during this period include Dr. Robotnik's Mean Bean Machine (a Western localization of the Japanese puzzle game Puyo Puyo ), [34] SegaSonic the Hedgehog (an arcade game), [35] and Knuckles' Chaotix (a spin-off for the Genesis's 32X add-on starring Knuckles). [36]

Saturn era (1996–1998)

A Sega Saturn. Few Sonic games were released for the Saturn, and the cancellation of Sonic X-treme is considered a significant factor in the platform's commercial failure. Sega-Saturn-JP-Mk1-Console-Set.jpg
A Sega Saturn. Few Sonic games were released for the Saturn, and the cancellation of Sonic X-treme is considered a significant factor in the platform's commercial failure.

Following the release of Sonic & Knuckles in 1994, Yasuhara quit Sega and Naka returned to Japan, having been offered a role as a producer. [13] He was reunited with Ohshima and brought with him Takashi Iizuka, [37] who had worked with Naka's team at STI. [25] With Naka's return, Sonic Team was officially formed as a brand. [38] [39] In 1996, towards the end of the Genesis' lifecycle, Sega released Sonic 3D Blast , an isometric game based on the original Sonic 3 concept, [40] as the system still had a large install base. [41] In Japan, Sonic Team was developing a new intellectual property, [13] Nights into Dreams (1996), for Sega's 32-bit Saturn console, so 3D Blast was outsourced to the British studio Traveller's Tales. [42] While 3D Blast sold well, [41] [43] it was criticized for its gameplay, controls, and slow pace. [44] [45] [46]

Meanwhile, in America, STI worked on Sonic X-treme , a 3D Sonic game for the Saturn intended for the 1996 holiday shopping season. Development was hindered by disputes between Sega of America and Japan, Naka's refusal to let STI use the Nights into Dreams game engine, and problems adapting the series to 3D. After two lead developers became ill, X-treme was canceled. [47] [48] Journalists and fans have speculated about the impact X-treme might have had if it was released, [47] [49] [50] with producer Mike Wallis believing it "definitely would have been competitive" with the first 3D Mario game, Super Mario 64 (1996). [48] Due to X-treme's cancellation, Sega ported 3D Blast to the Saturn [51] [52] with updated graphics and bonus levels developed by Sonic Team. [53] [54]

In 1997, Sega announced "Project Sonic", a promotional campaign aimed at increasing market awareness of and renewing excitement for the Sonic brand. The first Project Sonic release, the compilation Sonic Jam , [55] included a 3D overworld used by Sonic Team to experiment with 3D Sonic gameplay. [56] Sonic Team and Traveller's Tales collaborated again on the second Project Sonic game, Sonic R , [57] a 3D racing game and the only original Sonic game for the Saturn. [58] [59] Sonic Jam was well received, [60] [61] while Sonic R's reviews were more divided. [62] [63] The cancellation of Sonic X-treme, as well as the Saturn's general lack of Sonic games, are considered important factors in the Saturn's commercial failure. [58] [64] According to Nick Thorpe of Retro Gamer , "by mid-1997 Sonic had essentially been shuffled into the background... it was astonishing to see that just six years after his debut, Sonic was already retro." [65]

Jump to 3D (1998–2005)

With its Sonic Jam experiments, Sonic Team began developing a 3D Sonic platformer for the Saturn. The project stemmed from a proposal by Iizuka to develop a Sonic role-playing video game (RPG) with an emphasis on storytelling. Development moved to Sega's new console, the Dreamcast, which Naka believed would allow for the ultimate Sonic game. [5] :65–67 Sonic Adventure , directed by Iizuka and released in 1998, [66] was one of the first sixth generation video games. [67] It introduced elements that became series staples, [68] [69] such as artist Yuji Uekawa's new character designs influenced by comics and animation. [68] In 1999, Iizuka and 11 other Sonic Team members relocated to San Francisco and established Sonic Team USA. [13] Sonic Team USA developed the sequel Sonic Adventure 2 (2001), designed to be more action-oriented. [70] Between the two releases, Ohshima left Sega to form Artoon. [71] While both Adventure games were well received [66] and the first sold over two million copies, [72] consumer interest in the Dreamcast quickly faded, and Sega's attempts to spur sales through lower prices and cash rebates caused escalating financial losses. [73]

In January 2001, Sega announced it was discontinuing the Dreamcast to become a third-party developer. [74] The following December, [75] Sega released an expanded port of Sonic Adventure 2 for Nintendo's GameCube. [76] Afterward, Sonic Team USA developed the first multi-platform Sonic game, Sonic Heroes (2003), for the GameCube, Microsoft's Xbox, and Sony's PlayStation 2. [77] The game, again directed by Iizuka, was designed for a broad audience, [78] and Sonic Team revived elements not seen since the Genesis era, such as special stages and the Chaotix characters. [79] Reviews for Sonic Heroes were mixed; [80] while its graphics and gameplay were praised, critics felt it failed to address the problems of previous Sonic games, such as the camera. [81] [82] [83] After completing Sonic Heroes, Sonic Team USA was renamed Sega Studios USA. [13] Its next project was Shadow the Hedgehog (2005), a spin-off starring the popular Adventure 2 character Shadow. [84] [85] While Shadow retains most elements from previous Sonic games, it was aimed at a mature audience and introduced third-person shooting and nonlinear gameplay. [86] Shadow the Hedgehog was panned for its mature themes and level design, [87] [88] but was a commercial success, selling at least 1.59 million units. [89] [90]

Sega continued to release 2D Sonic games. In 1999, it collaborated with SNK to produce Sonic the Hedgehog Pocket Adventure , [91] an adaptation of Sonic 2 for the Neo Geo Pocket Color. [92] Some SNK staff went on to form Dimps the following year and developed original 2D Sonic games— Sonic Advance (2001), Sonic Advance 2 (2002), and Sonic Advance 3 (2004)—for Nintendo's Game Boy Advance (GBA). [93] [94] Sonic Advance was outsourced to Dimps because Sonic Team was understaffed with employees familiar with the GBA. [95] Dimps also developed Sonic Rush (2005) for the Nintendo DS, which uses a 2.5D perspective. [96] [97] Dimps' projects all received generally favorable reviews. [98] To introduce older games in the series to new fans, Sonic Team developed two compilations, Sonic Mega Collection (2002) and Sonic Gems Collection (2005). [99] Further spin-offs included the party game Sonic Shuffle (2000), [100] the pinball game Sonic Pinball Party (2003), [101] and the fighting game Sonic Battle (2003). [102]

Seventh-generation consoles (2006–2012)

For the franchise's 15th anniversary in 2006, Sonic Team developed Sonic Riders , [103] Sonic the Hedgehog , [104] and a GBA port of the original Sonic. [105] Sonic Riders, the first Sonic racing game since Sonic R, was designed to appeal to Sonic and extreme sports fans. [106] [107] With a more realistic setting than previous entries, Sonic the Hedgehog was intended to reboot the series for seventh generation consoles such as the Xbox 360 and PlayStation 3. [108] [109] [110] The development faced serious problems; Naka, the last of the original Sonic development team, resigned as head of Sonic Team to form Prope, [111] and the team split so work could begin on a Nintendo Wii Sonic game. According to Iizuka, these incidents, coupled with stringent Sega deadlines and an unpolished game engine, forced Sonic Team to rush development. [108] None of the 15th-anniversary Sonic games were successful critically, [112] [113] but Sonic the Hedgehog became regarded as the worst game in the series, panned for its bugs, camera, controls, and story. [114] [115] Brian Shea of Game Informer wrote that it "[became] synonymous with the struggles the Sonic the Hedgehog franchise had faced in recent years. Sonic 2006 was meant to be a return to the series' roots, but it ended up damning the franchise in the eyes of many." [108]

The first Sonic game for the Wii, Sonic and the Secret Rings (2007), takes place in the world of Arabian Nights and was released instead of a port of the 2006 Sonic the Hedgehog. [116] Citing lengthy development times, Sega switched plans and conceived a game that would use the motion detection of the Wii Remote. [117] Sega released a sequel, Sonic and the Black Knight , set in the world of King Arthur, in 2009. [118] Secret Rings and Black Night form what is known as the Sonic Storybook sub-series. [119] A Sonic Riders sequel, Zero Gravity (2008), was developed for the Wii and PlayStation 2. [120] Dimps returned to the Sonic series with Sonic Rush Adventure , a sequel to Sonic Rush, in 2007, [121] while BioWare developed the first Sonic RPG, Sonic Chronicles: The Dark Brotherhood (2008), also for the DS. [122] Backbone Entertainment developed two Sonic games exclusive to the PlayStation Portable, Sonic Rivals (2006) and Sonic Rivals 2 (2007). [123] [124]

Sonic Team began working on Sonic Unleashed (2008) in 2005. [125] It was conceived as a sequel to Adventure 2, but became a standalone entry after Sonic Team introduced innovations to separate it from the Adventure games. [126] With Unleashed, Sonic Team sought to combine the best aspects of 2D and 3D Sonic games and address criticisms of previous 3D entries, [127] [128] although reviews were mixed. [129] Iizuka was installed as the head of Sonic Team in 2010, [130] [131] and became the series' producer. Iizuka felt Sonic was struggling because it lacked unified direction, [66] so Sonic Team refocused on speed and more traditional side-scrolling. [132] Sonic the Hedgehog 4, a side-scrolling episodic sequel to Sonic & Knuckles co-developed by Sonic Team and Dimps, [133] began with Episode I in 2010, [134] followed by Episode II in 2012. [135] Later in 2010, Sega released Sonic Colors for the Wii and DS, which expanded on the well received aspects of Unleashed and introduced the Wisp power-ups. [136] For the series' 20th anniversary in 2011, Sega released Sonic Generations for the Xbox 360, PlayStation 3, and Windows; [137] [138] a separate version was developed by Dimps for the Nintendo 3DS. [139] [140] Sonic Generations featured remakes of levels from previous Sonic games and reintroduced the "classic" Sonic design from the Genesis era. [137] [140] These efforts were better received, especially in comparison to the 2006 game and Unleashed. [132]

Eighth-generation consoles (2013–present)

In May 2013, Nintendo announced it was collaborating with Sega to produce Sonic games for its Wii U and 3DS platforms. [141] The first game in the partnership, 2013's Sonic Lost World , [141] was also the first Sonic game for eighth generation hardware. [142] Sonic Lost World was designed to be streamlined and fluid in movement and design, [143] borrowing elements from Nintendo's Super Mario Galaxy games and the canceled X-treme. [144] The second was Mario & Sonic at the Sochi 2014 Olympic Winter Games (2013) for the Wii U, the fourth Mario & Sonic game and a 2014 Winter Olympics tie-in (see Crossovers section). [141] The deal was completed in 2014 with the release of Sonic Boom: Rise of Lyric for the Wii U and Sonic Boom: Shattered Crystal for the 3DS; these games were based on the Sonic Boom television series (see Animation section). [132] [145] None of the games were well received; Sonic Lost World polarized critics, [146] while critics found Mario & Sonic at the Sochi 2014 Olympic Winter Games mediocre [147] and panned the Sonic Boom games. [132] Nonetheless, Sonic Boom: Fire & Ice , a Shattered Crystal sequel, was released in 2016. [148]

Sega began to release more Sonic games for mobile phones, [132] such as iOS and Android devices. After he developed a version of Sonic CD for modern consoles in 2011, Australian programmer Christian "Taxman" Whitehead collaborated with fellow Sonic fandom member Simon "Stealth" Thomley to develop remasters of the original Sonic the Hedgehog and Sonic the Hedgehog 2 for iOS and Android, which were released in 2013. [149] The remasters were developed using Whitehead's Retro Engine, an engine tailored for 2D projects, [149] and received praise. [150] [151] Sonic Dash (2013), a Temple Run -style endless runner, [152] was developed by Hardlight [153] and downloaded over 350 million times by 2020, [154] and received a Sonic Boom-themed sequel in 2015. [155] Sonic Team released Sonic Runners , its first game for mobile devices, in 2015. [156] Sonic Runners was also an endless runner, [156] but was unsuccessful [157] and discontinued a year after release. [158] Gameloft released a sequel, Sonic Runners Adventure , in 2017 to generally positive reviews. [159] [160]

In a 2015 interview with Polygon , Iizuka acknowledged that contemporary Sonic games had been disappointing. He hoped, from then on, that the Sonic Team logo would stand as a "mark of quality"; he planned to release quality games and expand the Sonic brand, while retaining the modern Sonic design. [132] At the San Diego Comic-Con in July 2016, Sega announced two Sonic games to coincide with the series' 25th anniversary: Sonic Mania and Sonic Forces . [161] Both were released for the PlayStation 4, Xbox One, Nintendo Switch, and Windows in 2017. [162] [163] Sonic Mania was developed by the independent game developers PagodaWest Games and Headcannon with a staff comprising members of the Sonic fandom; Whitehead conceived the project and served as director. [164] The game, which emulates the gameplay and visuals of the Genesis entries, was hailed as a return to form for the franchise. [165] [166] [167] Meanwhile, Sonic Team developed Sonic Forces, which revives the dual gameplay of Sonic Generations along with a third gameplay style featuring the player's custom character. [168] [169] Sonic Forces received mixed reviews, [170] with criticism for its short length. [168] [171] [172] At SXSW 2019, Iizuka confirmed a new mainline Sonic game was in development. [173] Additionally, Sumo Digital developed a Sonic kart racing game, Team Sonic Racing (2019). [174] [175] [176]


Sega wanted Sonic to have strong Western appeal, so Sonic Team created a backstory similar to those of characters created by Disney, Marvel, Hanna-Barbera, and Sanrio. [177] Ohshima developed a backstory with heavy American influence. In Ohshima's story, in the 1940s, there was a pilot whose peers nicknamed him "Hedgehog", and his jacket's embroidery contained an emblem with a hedgehog. The pilot married a children's book author, who wrote a story about a hedgehog based on the pilot. According to Ohshima, that story was the basis of the original Sonic the Hedgehog, and the title screen is based on the pilot's emblem. [177] The team came up with two ideas—Sonic being part of a rock band and having a human girlfriend named Madonna—that did not make it into the game. The rock band was scrapped due to time and cartridge constraints, [178] while Sega felt Madonna was inappropriate given the young target audience. [179]

When localizing the original Sonic the Hedgehog, Sega of America was given little background information regarding the game's lore by the Japanese developers, [180] and distributed an internal document that contained its "localized history and overall philosophy" for Sonic. [181] Known colloquially as the "Sonic the Hedgehog Bible", [181] the 13-page [182] document went through multiple drafts. [180] One established that Sonic was from a family of hedgehogs that lived under a hedge in Hardly, Nebraska, and joined the town's track team after a coach noticed his speed. [181] Later drafts abandoned this story, [180] instead stating that Sonic learned his abilities from forest animals. [181] However, all three drafts establish that Eggman was benevolent and crafted Sonic's red sneakers before he became evil in a freak accident involving a rotten egg. [181] The Sonic Bible had little lasting influence on the franchise, [182] although it heavily informed the writers of Sonic the Comic . The Japanese developers eventually integrated their backstory concepts in the games, rendering the Sonic Bible non-canon. [180]

Sonic games traditionally follow Sonic's efforts to stop the mad scientist Eggman, who schemes to obtain the Chaos Emeralds—seven [lower-alpha 2] emeralds with mystical powers. Within the Sonic lore, the Emeralds can turn thoughts into power, [184] warp time and space with a technique called Chaos Control, [185] [186] give energy to all living things, and be used to create nuclear or laser-based weaponry. [187] They typically act as MacGuffins in the games' stories. [188] Sonic & Knuckles introduced the Master Emerald, [189] which controls the power of the Chaos Emeralds. [184] Eggman seeks the Emeralds in his quest to conquer the world, and traps animals in aggressive robots and stationary metal capsules. Because Sonic Team was inspired by the culture of the 1990s, Sonic features strong environmental themes. [177] Sonic represents "nature", [177] while Eggman represents "machinery" and "development"—a play on the then-growing debate between environmentalists and developers. [190]


The Sonic franchise is known for its large cast of characters; [191] Sonic the Fighters (1996) producer Yu Suzuki joked that anyone who makes a Sonic game has the duty to create new characters. [192] The first game introduced Sonic, a blue hedgehog who can run at incredible speeds, and Eggman, a rotund mad scientist who designs robots and seeks the Chaos Emeralds. [3] During the Genesis era, Eggman was referred to as Doctor Ivo Robotnik in Western territories. [193] [194] The name change, instituted by Sega of America's Dean Sitton, [181] was made without consulting the Japanese developers, who did not want a single character to have two different names. Since Sonic Adventure, the character has been referred to as Eggman in all territories, [193] although the Robotnik name is still acknowledged. [194] [195] [196]

Much of the series' core cast was introduced in the succeeding games for the Genesis and its add-ons. Sonic 2 introduced Sonic's sidekick Miles "Tails" Prower, a yellow fox who can fly using his two tails. [197] Sonic CD introduced Amy Rose, a pink hedgehog and Sonic's self-proclaimed girlfriend, and Metal Sonic, a robotic doppelgänger of Sonic created by Eggman. [198] Sonic 3 introduced Sonic's rival Knuckles, a red echidna and the guardian of the Master Emerald, [199] while Knuckles' Chaotix introduced the Chaotix, a group comprising Espio the Chameleon, Vector the Crocodile, and Charmy Bee. [200] A number of characters introduced during this period, such as Mighty the Armadillo and Ray the Flying Squirrel from SegaSonic the Hedgehog and Fang the Sniper from Sonic Triple Trouble (1994), faded into obscurity, although they sometimes reappear. [35] [201]

During Sonic Adventure's development, Sonic Team discovered that the characters' designs from the Genesis games, which were relatively simple, did not suit a 3D environment. As such, the art style was modernized to alter the characters' proportions and make them appeal to Western audiences. [68] Since Sonic Adventure, the series' cast has expanded considerably. [191] Notable characters include Big, [202] a large cat who fishes for his pet frog; [203] [204] the E-100 Series of robots; [205] Shadow, a brooding black hedgehog; [202] Rouge, a treasure-hunting bat; [206] Blaze, a cat from an alternate dimension; [207] and Silver, a telekinetic hedgehog from the future. [202] The series also features two fictional species: Chao, which function as digital pets and minor gameplay elements, [208] and Wisps, which function as power-ups. [209]

Some Sonic characters have headlined spin-off games. Eggman is the featured character of Dr. Robotnik's Mean Bean Machine, a Western localization of Puyo Puyo. Sega chose to replace the Puyo Puyo characters with those from the Sonic franchise because it feared the product would not be popular with a Western audience. [210] In 1995, Sega released two Game Gear spin-offs featuring Tails— Tails' Skypatrol (a scrolling shooter) and Tails Adventure (a Metroidvania game) [211] [212] —and the Knuckles-oriented Knuckles' Chaotix for the 32X. [36] 2005's Shadow the Hedgehog was developed in response to the Shadow character's popularity and to introduce "gun action" gameplay to the franchise. [178] Iizuka has commented that future spin-offs, such as sequels to Knuckles' Chaotix and Shadow the Hedgehog or a Big the Cat game, remain possibilities. [213] [214]


An example of gameplay in Sonic the Hedgehog 2 (1992), illustrating some of the core game mechanics of the Sonic franchise Sonic2Gameplay.gif
An example of gameplay in Sonic the Hedgehog 2 (1992), illustrating some of the core game mechanics of the Sonic franchise

The Sonic series is characterized by speed-based platforming gameplay. [191] Controlling the player character, the player navigates a series of levels at high speeds while jumping between platforms, fighting enemies and bosses, and avoiding obstacles. [191] [215] The series contains both 2D and 3D games. [216] 2D entries generally feature simple, pinball-like gameplay [215] [217] —with jumping and attacking controlled by a single button [218] —and branching level paths that require memorization to maintain speed. [215] [217] Meanwhile, 3D entries tend to be more linear in design, [217] feature various level objectives, [219] different movesets, [217] and allow players to upgrade and customize the playable character. [219] [220] Games since Sonic Unleashed have blended 2D and 3D gameplay, with the camera shifting between side-scrolling and third-person perspectives. [136] [221]

One distinctive game mechanic of Sonic games are collectible golden rings spread throughout levels, [222] which act as a form of health. [223] Players possessing rings can survive upon sustaining damage, but the rings are scattered and the player has a short amount of time to re-collect some of them before they disappear. [222] [224] Collecting 100 rings usually rewards the player an extra life. [219] [224] Rings have other uses in certain games, such as currency in the 2006 Sonic the Hedgehog, [220] restoring health bars in Sonic Unleashed, [225] or improving statistics in Sonic Riders. [226] Levels in Sonic games feature elements such as slopes, bottomless pits, and vertical loops. [3] [227] Springs, springboards, and dash panels are scattered throughout and catapult the player at high speeds in a particular direction. [228] Players' progress in levels is saved through passing checkpoints. [229] Checkpoints serve other uses in various games, such as entering bonus stages. [224] Some level locales, most notably Green Hill Zone, recur throughout the series. [230]

The series contains numerous power-ups, which are held in boxes that appear throughout levels. [231] An icon indicates what it contains, and the player releases the item by destroying the box. [232] Common items in boxes include rings, a shield, invincibility, high speed, and extra lives. [72] [232] Sonic Colors introduces the Wisps, a race of extraterrestrial creatures that act as power-ups. Each Wisp has its own special ability corresponding to its color; for instance, yellow Wisps allow players to drill underground and find otherwise inaccessible areas. [233]

In most Sonic games, the goal is to collect the Chaos Emeralds; [183] [234] the player is required to collect them all to defeat Eggman and achieve the games' good endings. [183] [235] Sonic games that do not feature the Chaos Emeralds, such as Sonic CD, feature different collectibles that otherwise function the same. [236] [200] Players find the Emeralds by entering portals, [235] opening portals using 50 rings, [237] or scouting them within levels themselves. [238] Sometimes, the Emeralds are collected automatically as the story progresses. [239] [240] By collecting the Emeralds, players are rewarded with their characters' "Super" form and can activate it by collecting 50 rings in a stage. The Super transformations grant the player character more speed, a farther jump, and invincibility, but their ring count drains by the second; the transformation lasts until all the rings have been used. [241] [242] Some games require the player to collect all the Chaos Emeralds to reach the final boss. [243] [244]

Sonic games often share basic gameplay, but some have game mechanics that distinguish them from others. For instance, Knuckles' Chaotix is similar to previous entries in the series, but introduces a partner system whereby the player is connected to another character via a tether; the tether behaves like a rubber band and must be used to maneuver the characters. [200] Sonic Unleashed introduces the Werehog, a beat 'em up gameplay style in which Sonic transforms into a werewolf-like beast and must fight enemies using brute strength. [245] Both the Sonic Storybook games feature unique concepts: Secret Rings is controlled exclusively using the Wii Remote's motion detection, [246] which Black Night incorporates hack and slash gameplay. [247] While some games feature Sonic as the only playable character, [246] [248] others feature multiple, who have alternate movesets and storylines. [132] [249] For instance, in Sonic & Knuckles, Knuckles goes through the same levels as Sonic, but his story is different, he explores different parts of the levels, and certain areas are more difficult. [250]

Many Sonic games contain multiplayer and cooperative gameplay, beginning with Sonic the Hedgehog 2. [200] [251] In some games, if the player chooses to control Sonic and Tails together, a second player can join at any time and control Tails separately. [252] [253] Sonic games also feature a split-screen competitive mode in which two players race to the end of the stage. [254] [255]


Sonic's first appearance, five months before the release of Sonic the Hedgehog, was in Sega AM3's racing game Rad Mobile (1991) as an ornament hanging from the driver's rearview mirror. The Sonic developers let AM3 use Sonic because they were interested in getting the character visible to the public. [256] Sonic appears in other Sonic Team games as a playable character in Christmas Nights (1996), [257] a power-up in Billy Hatcher and the Giant Egg (2003), [258] and in a cameo in the 2008 Wii version of Samba de Amigo (1999). [259] Sonic characters also feature in the Sega All-Stars series, which includes Sega Superstars (2004), [260] Sega Superstars Tennis (2008), [261] and Sumo Digital's kart racing games Sonic & Sega All-Stars Racing (2010) and Sonic & All-Stars Racing Transformed (2012). [174] [175] Flicky, the blue bird from Sega's 1984 arcade game, appears in several Sonic games. [262]

Since 2007, Sega has collaborated with former rival Nintendo to produce Mario & Sonic, an Olympic Games-themed crossover with the Mario franchise. The first Mario & Sonic game was released in 2007 for the Wii and in 2008 for the DS to tie in with the 2008 Summer Olympics. [263] [264] [265] Mario & Sonic at the Olympic Winter Games , based on the 2010 Winter Olympics, was released in 2010 for the Wii and DS, [266] and Mario & Sonic at the London 2012 Olympic Games, based on the 2012 Summer Olympics, was released for the Wii in 2011 and the 3DS in 2012. [267] The fourth game, 2013's Mario & Sonic at the Sochi 2014 Olympic Winter Games, was exclusive to the Wii U, [268] but the following game, Mario & Sonic at the Rio 2016 Olympic Games (2016), was released on both the Wii U and 3DS. [269] After a brief hiatus, the series made a return in 2019 with Mario & Sonic at the Olympic Games Tokyo 2020 for the Switch, based on the 2020 Summer Olympics. [270]

Sonic appears as a playable character in Nintendo's Super Smash Bros. crossover fighting games, beginning with Super Smash Bros. Brawl in 2008. Alongside Solid Snake from Konami's Metal Gear franchise, Sonic was the first non-Nintendo character to appear in Smash. [271] He was considered for inclusion in Super Smash Bros. Melee (2001), but the game was too close to completion so his introduction was delayed until Brawl. [272] He returned in the sequels Super Smash Bros. for Nintendo 3DS and Wii U (2014) and Super Smash Bros. Ultimate (2018). [273] [274] Shadow and Knuckles appear in Smash as non-playable characters, [275] while Tails and Knuckles costumes are available for players' Mii avatars. [276] A Sonic amiibo figurine was released for the Smash games, and is also compatible with Mario Kart 8 (2014), Super Mario Maker (2015), and Yoshi's Woolly World (2015). [277] [278] [279]

In June 2015, characters from the Angry Birds RPG Angry Birds Epic (2014) appeared as playable characters in Sonic Dash during a three-week promotion, [280] while Sonic was added to Angry Birds Epic as a playable character the following September. [281] Similar crossovers with the Sanrio characters Hello Kitty, Badtz-Maru, My Melody, and Chococat and the Namco game Pac-Man took place in December 2016 and February 2018. [282] [283] In November 2016, a Sonic expansion pack was released for the toys-to-life game Lego Dimensions (2015); the pack includes Sonic as a playable character, in addition to Sonic levels and vehicles. [284]


Jun Senoue (left) and his band Crush 40 have composed music for most Sonic games since Sonic 3D Blast (1996). Crush 40.JPG
Jun Senoue (left) and his band Crush 40 have composed music for most Sonic games since Sonic 3D Blast (1996).

Sega director Fujio Minegishi had connections to the music industry at the time the original Sonic was in development, and suggested his friend Yūzō Kayama write the score. However, Sonic Team did not think Kayama's music would fit, and instead commissioned Masato Nakamura, bassist and songwriter of the J-pop band Dreams Come True. [285] [4] Nakamura returned to compose Sonic 2's soundtrack. For both games, Nakamura began composing early in development with only concept images for reference. [286] He treated Sonic as a film and designed the music around the atmosphere that he felt from the images of the stages. [287] As a gift for the developers, Nakamura produced an alternate version of the Sonic 2 ending theme with Dreams Come True, included on The Swinging Star as "Sweet Sweet Sweet". [288] After the original game was released, Nakamura became popular in Japan, and increased his asking price. Dreams Come True owns the rights to Nakamura's score, which created problems when the Sonic Spinball team used his Sonic theme music without permission. [21]

Two soundtracks were composed for Sonic CD: the original score, featured in the Japanese and European releases, was composed by Naofumi Hataya and Masafumi Ogata, while the North American version was scored by Spencer Nilsen, David Young, and Mark Crew. The Japanese composers drew inspiration from club music such as house and techno, while Hataya cited C+C Music Factory, Frankie Knuckles, and the KLF as influences. [289] According to Nilsen, Sega commissioned a new soundtrack for the American release as the marketing department felt it needed a "more musically rich and complex" soundtrack. Nilsen also wrote a theme song, "Sonic Boom", which became one of the franchise's most iconic tunes. [290]

A number of composers contributed to the Sonic the Hedgehog 3 score, including Sega sound staff [291] and independent contractors recruited to finish the game on schedule. [292] American pop musician Michael Jackson, a Sonic fan, approached Sega, and he was hired to write tracks for Sonic 3. However, it is unclear if Jackson's contributions remain in the final game. According to Ohshima and Hector, Jackson's involvement was terminated and his music reworked following the first allegations of sexual abuse against him, [293] [35] but composers Doug Grigsby, Cirocco Jones, and Brad Buxer said his contributions remained. [294] Buxer, who was Jackson's musical director, recalled Jackson chose to go uncredited because he was unhappy with how his music sounded on the Genesis, [294] and that the credits music became the basis for Jackson's 1996 single "Stranger in Moscow". [295]

Sonic 3 was the first Sonic game composer Jun Senoue worked on. [291] Senoue has composed the music for many Sonic games since Sonic 3D Blast, [lower-alpha 3] often with his band Crush 40, which he formed with Hardline vocalist Johnny Gioeli. [306] While the Genesis Sonic soundtracks were characterized by electropop, Senoue's scores typically feature funk and rock music. [307] Tomoya Ohtani has been the series' sound director since Sonic the Hedgehog in 2006, and was the lead composer for that game, Sonic Unleashed, Sonic Colors, Sonic Lost World, Sonic Runners, and Sonic Forces. [308] [309] Ohtani, in an interview, stated that he attempts to "express through music the greatest features each game has", citing the diverse and energetic score of Sonic Unleashed and the more science fiction-style score of Sonic Colors as examples. [308]

Other composers who have contributed to Sonic games include Richard Jacques [310] [311] and Hideki Naganuma. [312] Tee Lopes—known for releasing unofficial remixes of Sonic tracks on YouTube—was the lead composer for Sonic Mania [313] and a contributor to Team Sonic Racing. [314] Sonic games have also featured contributions from notable artists. The main theme of the 2006 Sonic the Hedgehog was performed by Ali Tabatabaee and Matty Lewis of the band Zebrahead, [315] while Akon remixed "Sweet Sweet Sweet" for its soundtrack. [316] Hoobastank lead singer Doug Robb performed the main theme of Sonic Forces. [317]

Other media


Jaleel White, who voiced Sonic in DIC Entertainment's three Sonic animated series JaleelWhiteDec10.jpg
Jaleel White, who voiced Sonic in DIC Entertainment's three Sonic animated series

Sega approached the American Broadcasting Company (ABC) in 1992 about producing two television series—"a syndicated show for the after-school audience" and a Saturday-morning cartoon—based on Sonic. Kalinske "had seen how instrumental the launch of He-Man and the Masters of the Universe cartoon series was to the success of the toyline" during his time at Mattel and believed that success could be recreated using Sonic. [318] The two cartoons, the syndicated Adventures of Sonic the Hedgehog (1993) and ABC's Sonic the Hedgehog (1993–1994), were produced by DIC Entertainment. DIC also produced a Sonic Christmas special in 1996, and Sonic Underground in 1999, to promote Sonic Adventure. [319] [320] DIC's Sonic adaptations are generally not held in high regard. [319] [321] [322]

Adventures of Sonic the Hedgehog comprises 65 episodes overseen by Ren & Stimpy director Kent Butterworth and features slapstick humor in the vein of Looney Tunes . [323] Meanwhile, the 26-episode Sonic the Hedgehog (commonly called Sonic SatAM) [320] features a bleak setting in which Eggman has conquered the world, while Sonic is a member of a resistance force that opposes him. [323] The series was canceled after two seasons. [320] Sonic Underground was supposed to last for 65 episodes, but only 40 were produced. The series follows Sonic and his siblings Manic and Sonia, who use the power of music to fight against Eggman and reunite with their mother. [319] [320] In all three series, Sonic is voiced by Family Matters star Jaleel White. [319]

In Japan, Sega and Sonic Team collaborated with Studio Pierrot to produce a Sonic original video animation (OVA). The two-episode OVA, Sonic the Hedgehog , was released direct-to-video in Japan in 1996. To coincide with Sonic Adventure's Western release in 1999, [324] ADV Films released the OVA in North America as a 55-minute film dubbed Sonic the Hedgehog: The Movie. Sonic the Hedgehog, produced with input from Naka and Ohshima, is loosely based on Sonic CD (with certain elements borrowed from Sonic the Hedgehog 2 and 3), [319] and recounts Sonic's efforts to stop a generator taken over by Eggman from exploding and destroying their world. [325] Retrospectively, The A.V. Club 's Patrick Lee called the OVA "the only cartoon to adapt the look, sound, and feel of the Sonic games", with scenes and music that closely resemble the source material. [319]

Sonic X , an anime series produced by TMS Entertainment and overseen by Naka, ran for three seasons (78 episodes) from 2003 to 2006. [319] [326] While previous series' episodes feature self-contained plots, Sonic X tells a single story that spans the series' run. [319] In it, the Sonic cast teleports from their home planet to Earth during a scuffle with Eggman, where they meet a human boy, Chris Thorndyke. Throughout the course of the series, Sonic and his friends attempt to return to their world while fighting Eggman. The second season adapts the Sonic Adventure games and Sonic Battle, while the third season sees the friends return with Chris to their world, where they enter outer space and fight an army of aliens. [319] [326] Although Sonic X divided critics [327] and suffered from poor ratings in Japan, [326] it consistently topped ratings for its timeslot in the US and France. [328] [329]

Sonic Boom , a computer-animated series produced by Sega and Genao Productions, [330] premiered on Cartoon Network in November 2014. [331] It features a satirical take on the Sonic mythos, [320] and the franchise's cast was redesigned for it. [331] According to Iizuka, Sonic Boom came about as a desire to appeal more to Western audiences, and it ran parallel with the main Sonic franchise. [332] Sonic Boom lasted for two seasons and the last episode aired in 2017. In May 2020, Sega brand officer Ivo Gerscovich said that Sonic Boom reruns would continue but there would be no new episodes. [333]

To promote the release of Sonic Mania Plus (2018), a five-part series of animated shorts, Sonic Mania Adventures , was released on the Sonic the Hedgehog YouTube channel between March 30 and July 17, 2018. The series depicts Sonic's return to his world following the events of Sonic Forces, teaming up with his friends to prevent Eggman and Metal Sonic from collecting the Chaos Emeralds and Master Emerald. [334] [335] An additional Christmas-themed episode was released on December 21, 2018. [336] The shorts were written and directed by Tyson Hesse, who created Sonic Mania's opening cutscene. [335] [337] Similarly, Hesse produced a two-part animated series to tie in with the release of Team Sonic Racing in 2019. [173] Sonic and Tails also appeared as guest stars in OK K.O.! Let's Be Heroes in August 2019. [338]


Shogakukan published a Sonic the Hedgehog manga series in its Shogaku Yonensei magazine, beginning in 1992. Written by Kenji Terada and illustrated by Sango Norimoto, it follows a sweet but cowardly young hedgehog named Nicky whose alter ego is the cocky, heroic Sonic. [339] According to character artist Kazuyuki Hoshino, the manga was part of Sega of Japan's promotional strategy to appeal to primary school children. [340] The Sonic design team worked with Shogakukan to create new characters; Amy Rose and Charmy Bee originated in the manga before appearing in the games. [35] [340]

The longest-running Sonic-based publication is the 290-issue Sonic the Hedgehog , an American comic book published by Archie Comics from 1993 until its cancellation in 2017. [341] Archie also published a number of spin-offs, such as Knuckles the Echidna (1997–2000) and Sonic Universe (2009–2017). Archie's comic drew its premise from the Sonic the Hedgehog television series, with Sonic and a resistance force fighting the dictator Eggman. [341] Originally written as a "straightforward lighthearted action-comedy", Sonic the Hedgehog became more dramatic after Ken Penders began writing it with issue #11. [342] Penders remained the head writer for the following 150 issues and developed an elaborate lore unique to the series. Ian Flynn became head writer in 2006 and remained until the series' cancellation. [342] Following a lawsuit by Penders for ownership of characters he created, in 2013 the series was rebooted, [342] [343] leaving only characters introduced in the games or which predated Penders' run. [342]

In 2008, Guinness World Records recognized Archie's Sonic the Hedgehog as the longest-running comic based on a video game, [344] and by 2016 it was one of the longest-running American comics in the market. While Archie planned to publish at least four issues beyond #290, in January 2017 the series went on an abrupt hiatus, [342] and in July, Sega announced it was ending its business relationship with Archie in favor of a new partnership with IDW Publishing. [341] IDW's Sonic comic began in April 2018. Although the creative teams from the Archie series, such as Flynn, returned, the IDW series is set in a different continuity. Flynn said the IDW series differs from the Archie comic in that it draws from the games for stories, with the first story arc set after the events of Sonic Forces. [345] Fans continued the Archie series unofficially, including finishing unpublished issues, while Penders is using the characters he gained ownership of for a graphic novel, The Lara-Su Chronicles. [343]

Sonic the Comic , a British comic published by Fleetway Publications, lasted for 223 issues from 1993 to 2002; contributors included Richard Elson, Nigel Kitching, Andy Diggle, and Nigel Dobbyn. Sonic the Comic featured Sonic stories aimed at children, in addition to news and review sections. Although it adapted the events of the games, the writers established their own lore. The final story arc was a loose adaptation of Sonic Adventure in 2000, but the series continued until 2002; the last 39 issues were reprints of old stories. Following the series' cancellation, fans started Sonic the Comic Online, an unofficial webcomic that continues the stories. [346]

Live-action films

In August 1994, Sega of America signed a deal with Metro-Goldwyn-Mayer Pictures and Trilogy Entertainment to produce a live-action animated film to tie in with Sonic X-treme. In May 1995, screenwriter Richard Jefferies pitched a treatment, Sonic the Hedgehog: Wonders of the World, to Sega. The treatment saw Sonic and Eggman escape from Sonic X-treme into the real world and Sonic collaborate with a boy to stop Eggman. No agreement was reached and the film was canceled. Jeffries, with permission from Sega, pitched his treatment to DreamWorks Animation, but it was rejected. [318]

Sonic the Hedgehog (2020)

Tim Miller, the executive producer of the Sonic the Hedgehog film Tim Miller by Gage Skidmore 2.jpg
Tim Miller, the executive producer of the Sonic the Hedgehog film

In 2013, Sony Pictures Entertainment acquired the Sonic film rights, [347] and in June 2014 announced it would produce a Sonic film as a joint venture with Sega's Marza Animation Planet. [348] Neal H. Moritz was attached to produce under his Original Film banner, alongside Takeshi Ito, Mie Onishi, and Toru Nakahara. [348] In February 2016, Sega CEO Hajime Satomi stated the film was scheduled for 2018. [349] Blur Studio's Tim Miller and Jeff Fowler were hired the following October to develop the film; Fowler would make his feature directorial debut, while both would executive produce. [350] In October 2017, Paramount Pictures acquired the rights after Sony put the film into turnaround. However, most of the production team remained unchanged, [351] and principal photography began in September 2018 in Ladysmith, British Columbia. [352]

The film, written by Patrick Casey and Josh Miller, [350] [353] follows Sonic (voiced by Ben Schwartz) as he journeys to San Francisco with a small-town cop (James Marsden) so he can escape Eggman (Jim Carrey) and collect his missing rings. Additional cast members include Tika Sumpter, Adam Pally, and Neal McDonough, [354] while Colleen O'Shaughnessey reprises her voice role as Tails from the games for a mid-credits scene cameo. [355] [356] Sonic was initially redesigned so he would be more realistic, with fur, new running shoes, two separate eyes, and a more humanlike physique. [357] [358] The production team used Ted, the living teddy bear from the Ted films, as a reference to insert a CG character into a real-world setting. [357] Sonic's redesign was met with backlash; [359] [360] [361] it was criticized for not resembling the game design and described as evoking an uncanny valley-type of repulsive response from viewers. [362] As such, the design was revised to better resemble the original. [363]

Paramount originally scheduled Sonic the Hedgehog for a November 8, 2019 release, [364] but delayed it to February 14, 2020, to accommodate the redesign. [365] The film received generally positive reviews from critics, who felt it exceeded the low expectations typically associated with video game-based films; Carrey's performance in particular was praised. [366] Criticism was directed at a perceived lack of originality or ambition, [367] and while Sonic's second redesign was praised, some felt it set a negative precedent for the film industry by giving fans the power to influence the filmmakers. [368] With an estimated budget of $81–95 million, [369] [370] the film has grossed over $306 million worldwide, [371] [372] making it the second-highest-grossing film of 2020 so far. [373] In March, it became the highest-grossing film based on a video game in US box office history. [374]

Sonic the Hedgehog 2 (2022)

In March 2020, Marsden confirmed that he had signed on for sequels to the Sonic film. [375] Sonic the Hedgehog 2 is scheduled for release on April 8, 2022. [376] Much of the crew, including Fowler, Casey, and Josh Miller, are set to return. [377] Fowler said that since the first film was an origin story for Sonic and Robotnik, a sequel would introduce more elements from the video games, such as Super Sonic and the Chaos Emeralds. [378]


Licensed Sonic merchandise includes books, clothing, accessories, board games, soundtracks, and toys such as figures and plushes. [379] [380] [381] [382] Sega and McDonald's collaborated for Sonic-themed Happy Meal promotions in 1994 and 2004 to advertise Sonic 3 and Sonic Heroes, respectively. [26] [383] First4Figures has produced a large number of vinyl and resin Sonic figures since 2008. [384] [385] In January 2012, Sega and RHM Solutions opened an online Sonic store, [379] while PlayStation Gear began selling Sonic items in December 2017. [386]

Reception and legacy


I think Sega succeeded in making a good, strong character. There are lots of games that try to imitate Mario but Sega did especially well with Sonic. Despite his resemblance to Mario, there are some special points that make him different: the energy, for example. Among Mario’s imitations, Sonic is a good one.

Mario creator Shigeru Miyamoto, 1995 [387]

The Sonic platformers released during the 1990s were widely acclaimed and have been listed among the greatest video games of all time. [388] [389] [390] Sonic was touted as a faster, cooler alternative to Nintendo's contemporary Mario game, Super Mario World (1990). [191] According to Kotaku 's Zolani Stewart, Sonic's rebellious character was representative of the culture of the 1990s, "when the idea of individual rebellion seemed inextricably linked to consumer culture". [391] Writing in The Guardian , Keith Stuart observed that Sonic the Hedgehog's emphasis on speed departed from accepted precepts of game design, requiring that players "learn through repetition rather than observation" as "the levels aren't designed to be seen or even understood in one playthrough... Sonic is incorrect game design and yet ... it's a masterpiece." [215] Sonic 2, Sonic CD, Sonic 3, and Sonic & Knuckles were praised for building on the first game's formula; [392] [393] [394] [395] in 1996, Next Generation described the Genesis games as "the zeitgeist of the 16-bit era". [390]

After the uneventful Saturn era, the series found renewed popularity during the sixth generation of video game consoles. Sonic Adventure, though criticized for its glitches and camera system, was acclaimed for its visuals, spectacle, and varied gameplay; [396] [397] [398] Sonic Adventure 2 was met with similar praise. [299] [399] [400] However, journalists began to feel the series was straying from its roots, with some commenting that Sonic Adventure failed to reinvent Sonic for the 3D era as Super Mario 64 had for Mario. [391] [401] [217] Stewart argued that Sonic Adventure's addition of voice acting and greater focus on plot changed Sonic into "a flat, lifeless husk of a character, who spits out slogans and generally has only one personality mode, the radical attitude dude, the sad recycled image of vague '90s cultural concept". [391] Edwin Evans-Thirlwell of Eurogamer agreed, writing that Mario's "plucky earnestness and whimsy will always enjoy a longer shelf-life than [Sonic's] over-compensatory edginess". [217]

After the Dreamcast, the series' critical standing began to decline. Evans-Thirlwell summarized further 3D Sonic games as "20-odd years of slowly accumulating bullshit". [217] Although reviews for Sonic Heroes were mostly favorable, [132] Stewart said this was when the focus on story and cutscenes became unbearable. [391] The decline continued with Shadow the Hedgehog—widely criticized as a misguided attempt to bring a sense of maturity to the franchise [87] [88] [402] —and reached its climax with the critically panned 2006 Sonic the Hedgehog reboot. [108] Sonic Mania developer Christian Whitehead said that the changes to the Sonic formula "stemmed from a — perhaps misplaced — desire to continue to push Sonic as a AAA brand". [132] Journalists, Whitehead, and former Sega of America marketing director Al Nilsen criticized the number of characters added to the series, [132] [191] although Naka had previously justified the additions as necessary to please fans. [403] Evans-Thirlwell argued that Sonic Team had never successfully translated the momentum-based gameplay of the Genesis games to 3D, and that unlike Mario, Sonic never had a 3D "transcendental hit". [217] Furthermore, Simon Parkin of The Guardian noted that whereas Miyamoto reviews every Mario game prior to release, the individuals who shaped Sonic (Naka, Ohshima, and Cerny) left Sega. [221]

Despite the critical decline, Dimps' side-scrolling Sonic games for the GBA and DS were consistently praised. [98] Writing for Destructoid , Jim Sterling said: "Hyperbole states that we haven't had a good Sonic game since Sonic Adventure, which really betrays how much we gamers ignore the handheld market... Sonic Advance and the Sonic Rush games have often ranged from decent to superb, which makes one wonder why Dimps is the 'B' team and the inferior Sonic Team is the 'A' team." [404] In the wake of the 2006 Sonic the Hedgehog, Brett Elston of GamesRadar+ said that Sonic Rush Adventure "managed to keep the [series'] spirit alive". [405] While Sonic Unleashed was criticized for its addition of beat 'em up gameplay, which IGN 's Hilary Goldstein bemoaned had "nothing to do with Sonic whatsoever", [245] its speed-based platforming levels were widely praised; critics suggested that the game would have been better received if it had focused on them. [406] [407] [408]

In October 2010, Sega delisted Sonic games with average or below-average scores on the review aggregator website Metacritic, to increase the value of the brand and avoid confusing customers. [409] That month, Sonic the Hedgehog 4: Episode I was released to general praise, [410] with Goldstein summarizing it as "short but sweet and well worth downloading". [411] Sonic Colors, released shortly afterward, was hailed as a return to form for the series, [412] [413] [414] as was 2011's Sonic Generations. [415] [416] However, Evans-Thirlwell, while considering Sonic Generations the best 3D Sonic game, also called it "an admission of defeat" for depicting the 2D and 3D incarnations of Sonic "together only to remind us of their profound differences". [217] Sonic Lost World was released in 2013 to more mixed reviews, with some critics considering it a fresh take on the Sonic formula and others a poorly designed mess, [146] while the two Sonic Boom games received widespread negative reviews. [417] [418] The Sonic Boom games became the worst-selling games in Sonic history, selling only 490,000 copies combined by February 2015. [419] That year, Iizuka admitted that Sonic Team had prioritized shipping games over quality and did not have enough involvement in third-party Sonic games such as Sonic Boom. [132] Sega CEO Haruki Satomi acknowledged that Sega in general had "partially betrayed" the trust of the longtime fans and hoped to focus on quality over quantity. [420]

In June 2015, the Sonic public relations manager Aaron Webber took charge of the series' Twitter account. Under Webber, the account, @sonic_hedgehog, became renowned for posting internet memes and making self-deprecating comments about the Sonic franchise's critical decline. According to Allegra Frank of Polygon , Webber "had an important effect on the franchise, cultivating a new persona for the character, one that has created a renewed sense of hope". [421] The announcement of Sonic Mania in 2016 brought further hope for the Sonic franchise's future. Journalists described it as a true continuation of the Genesis games, succeeding where previous Sonic games—such as Sonic Rush and Sonic 4—had failed. [422] [423] [424] It became the best-reviewed Sonic game in 15 years upon its August 2017 release; [425] Matt Espineli of GameSpot summarized it "exceed[ing] expectations of what a new game in the franchise can look and play like, managing to simultaneously be a charming celebration of the past and a natural progression of the series' classic 2D formula." [426] Many called it one of the best games in the series and expressed excitement for Sonic's future, [426] [166] [167] although Sonic Forces, released a few months later, received mixed reviews. [170]


Sonic the Hedgehog is one of the bestselling video game franchises. The series' cumulative sales reached 89 million units by March 2011 [427] [428] and over 140 million by 2016. [429] The Mario & Sonic series alone sold over 25 million units as of 2019. [430] The Sonic the Hedgehog video games grossed over $5 billion in sales by 2014, [431] in addition to the Mario & Sonic series grossing $1.25 billionas of 2019. [430] Series sales and free-to-play mobile game downloads had totaled 920 million units as of 2019. [432] Individual Sonic games have been bestsellers as well. The original game is the bestselling Genesis game, while Sonic the Hedgehog 2 is the bestselling Game Gear game, Sonic CD is the bestselling Sega CD game, and Sonic Adventure is the bestselling Dreamcast game. [433] Sonic Adventure 2 is the eighth-bestselling GameCube game in the US and the bestselling GameCube game that was not published by Nintendo. [434]

1991 Sonic the Hedgehog Sega Genesis 15 million (bundled with the Mega Drive / Genesis hardware) [435] [436]
1992 Sonic the Hedgehog 2 6 million [72] [436] [437]
1993 Sonic Spinball 1 million in US [438]
1993 Sonic CD Sega CD 1.5 million [433]
1994 Sonic the Hedgehog 3 and Sonic & Knuckles Sega Genesis4 million [436] [439]
(Sonic 3: 1.02 million in US [440]
Sonic & Knuckles: 1.24 million in US) [440]
1996 Sonic 3D Blast 700,000 [41]
1998 Sonic Adventure Dreamcast 2.5 million [72]
2001 Sonic Adventure 2 Battle GameCube 1,732,186 [lower-alpha 4]
Sonic Advance Game Boy Advance 1.515 million [lower-alpha 5]
2003 Sonic Mega Collection GameCube1.453 million [lower-alpha 6]
Sonic Heroes PlayStation 2 , Xbox, GameCube3.41 million [444] [445] [446]
Sonic Mega Collection Plus PlayStation 2, Xbox2 million [447]
2005 Shadow the Hedgehog PlayStation 2, Xbox, GameCube2.06 million [448] [449]
2006 Sonic the Hedgehog Mobile 8 million in US & EU [450]
Sonic the Hedgehog (2006) Xbox 360, PlayStation 3 870,000 [451]
2008 Sonic Unleashed PlayStation 2, Wii, Xbox 360, PlayStation 32.45 million [452]
2010 Sonic & Sega All-Stars Racing PlayStation 3, Xbox 360, Wii, Nintendo DS, Microsoft Windows1.07 million [453]
Sonic Colors Wii, Nintendo DS2.18 million [454] [455]
2011 Sonic Generations PlayStation 3, Xbox 360, Windows, Nintendo 3DS 1.85 million [456]
2012 Sonic & All-Stars Racing Transformed PlayStation 3, Xbox 360, Wii U, Nintendo 3DS1.36 million [457]
2013 Sonic Lost World Wii U, Nintendo 3DS710,000 [458]
2014 Sonic Boom: Rise of Lyric and Shattered Crystal 620,000 [459]
2018 Sonic Mania Nintendo Switch, PlayStation 4, Xbox One, Windows1 million [460]
Mario & Sonic series 25 million [430]
2007 Mario & Sonic at the Olympic Games Wii, Nintendo DS11.31 million [461] [462]
2009 Mario & Sonic at the Olympic Winter Games 6.53 million [453] [463]
2011 Mario & Sonic at the London 2012 Olympic Games Wii, Nintendo 3DS3.28 million [464]
2013 Mario & Sonic at the Sochi 2014 Olympic Winter Games Wii U65,377 in Japan [465]
2016 Mario & Sonic at the Rio 2016 Olympic Games Nintendo 3DS, Wii U430,033 in Japan [466]

Effect on the industry

Primarily because of its Genesis bundling, Sonic the Hedgehog contributed greatly to the console's popularity in North America. [20] Between October and December 1991, the Genesis outsold its chief competitor, the Super Nintendo Entertainment System, by a two-to-one ratio; at its January 1992 peak Sega held 65 percent of the market for 16-bit consoles. [8] Although Nintendo eventually reclaimed the number-one position, it was the first time since December 1985 that Nintendo had not led the console market. [467] credited Sonic for "turning the course" of the 16-bit console wars, helping make Sega a dominant player and industry giant. [20]

During the 16-bit era, Sonic inspired similar platformers starring animal mascots, including the Bubsy series, [468] Aero the Acro-Bat (1993), [20] James Pond 3 (1993), [469] Earthworm Jim (1994), [470] and Zero the Kamikaze Squirrel (1994). [471] "Animal with attitude" games carried over to the 3D era, with the developers of Gex (1995) and Crash Bandicoot (1996) citing Sonic as a major inspiration. [472] [473] [474] According to Levi Buchanan of IGN , "Sonic inspired so many of these copycats that they practically became an entire subgenre for the platformer." [474] Thorpe commented that "it's hard to keep track of how many programmers have cited [Sonic the Hedgehog] as a bar against which they have measured their own work", [25] while Phil Hornshaw of Complex noted that few animal mascot characters achieved the same success as Sonic. [429] Regarding the series' influence on the video game industry, Thorpe wrote:

Every E3 conference dig can be traced back to the console war that truly fired up when Sonic and Mario were put side by side. Every time console games have pushed to obtain an older target age group, that's something that Sonic was on the leading edge of — and broadening demographics has been important to the growth of the games industry, whether for reasons of content... or appeal... Five years prior to the co-ordinated international launch of Sonic 2, your gaming experience depended heavily on where you lived... These days, with same-day global launches and region-free consoles, that seems like a lifetime ago. And of course, every time you buy DLC, you might want to spare a thought for Sonic & Knuckles. And, of course, all of that is to say nothing of the legion of mascot platform games that came in the wake of the Sonic series. [25]

Cultural impact

A Sonic cosplayer in 2018 Sonic - CC Villabe A6 - 2018-03-03 - IMG 7292.jpg
A Sonic cosplayer in 2018

One of the world's most popular video game characters, by 1992 Sonic was more recognizable to children ages 6 to 11 than Disney's Mickey Mouse. In 1993, Sonic became the first video game character to have a balloon in Macy's Thanksgiving Day Parade, [20] and was one of the four characters inducted on the Walk of Game in 2005, alongside Mario, Link, and Master Chief. [475] One of a class of genes involved in fruit fly embryonic development, called hedgehog genes, was named "sonic hedgehog" after the character. [476] Additionally, a Japanese team developing the Radio & Plasma Wave Investigation (RPWI) instrumentation for the Jupiter Icy Moons Explorer spacecraft, to be launched by ESA and Airbus in 2022, received approval to use Sonic as the mascot. [477] Sonic and Eggman appear as minor characters in the Walt Disney Animation Studios films Wreck-It Ralph (2012) and Ralph Breaks the Internet (2018), [478] [479] while Sonic makes a cameo in Steven Spielberg's Ready Player One (2018). [480]

The franchise is known for its eccentric and passionate fandom, which produces unofficial media including fangames, fan fiction, modifications and ROM hacks of existing games, fan films, and fan art. Caty McCarthy of USGamer noted that many fans have continued to support the series in spite of poorly received games like the 2006 Sonic the Hedgehog, and credited the fandom with helping maintain public interest in the franchise. [481] Notable Sonic fangames include Sonic: After the Sequel (2013), set between the events of Sonic the Hedgehog 2 and 3, [482] and Sonic Dreams Collection (2015), which satirizes the series' fandom. [483] Sonic Mania's development team included individuals who had worked on Sonic ROM hacks and fangames, [481] while Iizuka said the character customization system in Sonic Forces was influenced by the Sonic community's tendency to create original characters. [484]

Sonic has inspired various internet memes, [485] [486] which have been acknowledged by Sega and referenced in games. [487] [488] "Sanic hegehog", a crude Sonic drawn in Microsoft Paint, originated in 2010; [489] typically, the meme uses one of Sonic's catchphrases but with poor grammar. [490] The Sonic Twitter account has made numerous references to it, [490] [491] and it appeared in official downloadable content for Sonic Forces on in-game shirts [490] [492] and as a visual gag in the Sonic the Hedgehog film. [223] Sanic also inspired similar memes and parodies, and was described by William Moo of Syfy Wire as "perfect proof of the twisted love and appreciation many have" for Sonic. [490] In January 2018, players flooded the virtual reality game VRChat with avatars depicting "Ugandan Knuckles", a deformed version of Knuckles the Echidna. The character stemmed from a 2017 review of Sonic Lost World by YouTube user Gregzilla, as well as fans of PlayerUnknown's Battlegrounds streamer Forsen, who often reference the African country Uganda. [493] [494] The Ugandan Knuckles meme was controversial for its perceived racial insensitivity, [493] and the creator of the avatar expressed regret over how it was used. [495] In response, the Sonic Twitter encouraged players to respect others and donate to a Ugandan charity through GlobalGiving. [487]


  1. Japanese: ソニック・ザ・ヘッジホッグ Hepburn: Sonikku za Hejjihoggu
  2. In the original Sonic the Hedgehog , there are only six Chaos Emeralds. [183]
  3. Senoue was the lead composer for Sonic 3D Blast (1996), [296] Sonic Adventure (1998), [297] [298] Sonic Adventure 2 (2001), [299] Sonic Heroes (2003), [300] Shadow the Hedgehog (2005), [301] Sonic and the Black Knight (2009), [302] Sonic the Hedgehog 4 (2010 and 2012), [303] Sonic Generations (2011), [304] and Team Sonic Racing (2019). [305]
  4. Sonic Adventure 2 Battle: 1.44 million in US, [440] 192,186 in Japan, [441] 100,000 in UK [442]
  5. Sonic Advance: 1.21 million in US, [440] 204,542 in Japan, [441] 100,000 in UK [442]
  6. Sonic Mega Collection: 1.38 million in US, [440] 72,967 in Japan [443]

    Related Research Articles

    Sonic the Hedgehog (character) Video game character

    Sonic the Hedgehog is the protagonist of the Sonic the Hedgehog video game series released by Sega, as well as numerous spin-off comics, animations, and other media. Sonic is a blue anthropomorphic hedgehog who can run at supersonic speeds and curl into a ball, primarily to attack enemies. In most games, Sonic must race through levels, collecting power-up rings and avoiding obstacles and enemies.

    Knuckles the Echidna Fictional character from the Sonic franchise

    Knuckles the Echidna is a fictional character in Sega's Sonic the Hedgehog series. He is a red anthropomorphic echidna who is determined and serious, but sometimes gullible. He has the ability to glide and climb up walls, and is a powerful fighter with spiked hands. He serves as the guardian of the Master Emerald, a huge gemstone that controls the series' integral Chaos Emeralds.

    <i>Sonic Adventure</i> 1998 video game

    Sonic Adventure is a 1998 platform game for Sega's Dreamcast and the first main Sonic the Hedgehog game to feature 3D gameplay. The story follows Sonic the Hedgehog, Miles "Tails" Prower, Knuckles the Echidna, Amy Rose, Big the Cat, and E-102 Gamma, in their quests to collect the seven Chaos Emeralds and stop series antagonist Doctor Robotnik from unleashing Chaos, an ancient evil. Controlling one of the six characters—each with their own special abilities—players explore a series of themed levels to progress through the story. Sonic Adventure retains many elements from prior Sonic games, such as power-ups and the ring-based health system. Outside the main game, players can play minigames like racing and interact with Chao, a virtual pet.

    <i>Sonic Heroes</i> 2003 video game

    Sonic Heroes is a 2003 3D platform game developed by Sonic Team USA and published by Sega as part of the Sonic the Hedgehog series. The player races a team of series characters through levels to amass rings, defeat robots, and collect the seven Chaos Emeralds needed to defeat Doctor Eggman. Within each level, the player switches between the team's three characters, who each have unique abilities, to overcome obstacles. Sonic Heroes abandons the action-adventure and exploration-based gameplay of its predecessors Sonic Adventure (1998) and Sonic Adventure 2 (2001) and instead returns to the linear style of Sega Genesis-era Sonic games.

    Tails (<i>Sonic the Hedgehog</i>) Fictional character from the Sonic the Hedgehog franchise

    Miles "Tails" Prower is a fictional character in Sega's Sonic the Hedgehog series, and the title character's best friend, sidekick, and most recurring ally. Tails also appears in his own spin-off series, comic books, cartoons, and films. He is the second character to consistently appear by Sonic's side in the series. The name "Miles Prower" is a pun on "miles per hour", a reference to the famed speed of Sonic the Hedgehog. He is a two-tailed fox, hence the nickname. A mechanical genius and skilled pilot, he can fly by spinning his tails like a helicopter rotor and can be seen flying in multiple games and TV shows created by Sega. He debuted with the release of the 8-bit version of Sonic the Hedgehog 2 in October 1992. In the mid-1990s, he was featured as the main character in a number of spinoff games: Tails and the Music Maker for the Sega Pico, and Tails Adventure and Tails' Skypatrol for the Game Gear. Tails was rated the third-most-popular character in the franchise, behind Sonic and Shadow, in an official poll from Sega in 2009.

    Chao (<i>Sonic the Hedgehog</i>) fictional life forms in the Sonic the Hedgehog video game series

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    Shadow the Hedgehog Fictional character from the Sonic franchise

    Shadow the Hedgehog is a character appearing in Sega's Sonic the Hedgehog video game franchise. Shadow was created by Takashi Iizuka and Shiro Maekawa, and debuted in the series' 2001 installment Sonic Adventure 2. Although this was intended to be his only appearance, Shadow proved so popular among fans that developer Sonic Team decided to include him in 2003's Sonic Heroes. Shadow has since featured in numerous entries in the franchise, including a self-titled spin-off game in 2005. He also appears in Sonic television adaptations, comics, and merchandise.

    <i>Sonic Adventure 2</i> 2001 video game

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    <i>Sonic Advance</i> 2001 platform video game

    Sonic Advance is a 2001 side-scrolling platform game developed by Dimps for the Game Boy Advance (GBA). It was the first Sonic the Hedgehog game to be released on a Nintendo platform and was produced in commemoration of the series' tenth anniversary. The story follows Sonic, Tails, Knuckles, and Amy as they journey to stop Doctor Eggman from taking over the world. Controlling a character, players are tasked with completing each level, defeating Eggman and his robot army, and collecting the seven Chaos Emeralds.

    <i>Sonic Rush</i> 2005 video game

    Sonic Rush is a 2005 platform video game developed by Sonic Team and Dimps for the Nintendo DS as part of Sega's Sonic the Hedgehog series. It was released on November 15, 2005 in North America, November 18 in the PAL region, and November 23 in Japan. It is a 2D platform game, similar to earlier games in the series as well as later ones like Sonic Advance. Levels in the game are side-scrolling and displayed using both of the DS's screens. However, boss battles, the main characters, and a special stage are rendered in 3D, creating a 2.5D effect. The game's storyline follows the intertwining adventures of a new character, Blaze the Cat, and the series' main character, Sonic the Hedgehog. They respectively battle Doctor Eggman and his doppelgänger Eggman Nega at certain points.

    <i>Shadow the Hedgehog</i> (video game) 2005 video game

    Shadow the Hedgehog is a 2005 platform game developed by Sega Studios USA, the former United States division of Sonic Team, and published by Sega. It is a spin-off from the Sonic the Hedgehog series and follows Shadow the Hedgehog, a creation of Doctor Eggman's grandfather, Prof. Gerald Robotnik, as he attempts to learn about his past while suffering from amnesia. Shadow the Hedgehog introduces third-person shooter elements and nonlinear gameplay to the Sonic franchise. To defeat enemies, Shadow can use various weapons and special attacks, and most levels have three possible missions that the player may choose to complete. The missions completed determine the game's plot and subsequently playable levels.

    <i>Sonic the Hedgehog</i> (2006 video game) 2006 platform video game by Sega

    Sonic the Hedgehog is a 2006 platform game developed by Sonic Team and published by Sega. It was produced in commemoration of the Sonic series' 15th anniversary, and intended as a reboot for the seventh generation video game consoles. Players control Sonic, Shadow, and new character Silver, who battle Solaris, an ancient evil pursued by Doctor Eggman. Each playable character has his own campaign and abilities, and must complete levels, explore hub worlds and fight bosses to advance the story. In multiplayer modes, players can work cooperatively to collect Chaos Emeralds or race to the end of a level.

    <i>Sonic Chronicles: The Dark Brotherhood</i> video game

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    Doctor Eggman Fictional character from Sonic franchise

    Doctor Ivo "Eggman" Robotnik is a fictional character and the main antagonist of Sega's Sonic the Hedgehog series. His original character designer was Naoto Ohshima, who created him as part of many design choices for Sega's new mascot. After the creation of Sonic the Hedgehog, Ohshima chose to use his previous egg-shaped character to create the antagonist of the 1991 video game Sonic the Hedgehog, making him the archenemy of the series' eponymous main character.

    <i>Sonic the Hedgehog 4: Episode I</i> 2010 platform video game

    Sonic the Hedgehog 4: Episode I is a 2010 side-scrolling platform game developed by Dimps, with assistance from Sonic Team, and published by Sega. It is part of the Sonic the Hedgehog series and acts as a sequel to Sonic & Knuckles (1994). Episode I follows Sonic as he sets out to stop Doctor Eggman, who has returned following his defeat in Sonic & Knuckles. The game returns to the Sega Genesis style of Sonic gameplay, with movement restricted to a 2D plane. Like previous Sonic games, the player races through levels, collecting rings while rolling into a ball to attack enemies. The game also features special stages in which the player collects Chaos Emeralds and online leaderboards comparing level completion times and high scores.

    <i>Sonic Boom: Fire & Ice</i> 2016 action-adventure game

    Sonic Boom: Fire & Ice is an action-adventure platform game developed by Sanzaru Games and published by Sega for the Nintendo 3DS. It is part of the Sonic Boom spin-off franchise of the Sonic the Hedgehog series, along with the games Rise of Lyric and Shattered Crystal and a television series. Originally planned for a release in late 2015, Fire & Ice was released in North America and Europe in September 2016, and in Australia the following month. While the game received mixed reviews, it was seen as an improvement over Rise of Lyric and Shattered Crystal.

    <i>Sonic Boom: Rise of Lyric</i> 2014 video game

    Sonic Boom: Rise of Lyric is an action-adventure game developed by Big Red Button and published by Sega for the Wii U console. Along with Sonic Boom: Shattered Crystal for the Nintendo 3DS, the game is a spin-off of Sega's Sonic the Hedgehog series and is a part of the Sonic Boom franchise, which also consists of an animated television series, a comic series by Archie Comics, and a toyline by Tomy.

    <i>Sonic Forces</i> 2017 video game

    Sonic Forces is a platform game developed by Sonic Team and published by Sega. Produced in commemoration of the Sonic the Hedgehog franchise's 25th anniversary, it was released for Microsoft Windows, Nintendo Switch, PlayStation 4, and Xbox One in November 2017. The story sees Sonic the Hedgehog joining a resistance force to stop Doctor Eggman. It features three gameplay modes: "Classic", side-scrolling gameplay similar to the original Sega Genesis Sonic games; "Modern", 3D gameplay similar to Sonic Unleashed and Sonic Colors; and a mode featuring the "Avatar", the player's custom character.


    1. 1 2 Kennedy, Sam. "The Essential 50: Sonic the Hedgehog". Archived from the original on August 22, 2004. Retrieved March 8, 2015.
    2. 1 2 3 Harris, Blake J. (2014). Console Wars: Sega, Nintendo, and the Battle That Defined a Generation . New York, New York: HarperCollins. p. 386. ISBN   978-0-06-227669-8.CS1 maint: ref=harv (link)
    3. 1 2 3 M. Thomas, Lucas (January 26, 2007). "Sonic the Hedgehog VC Review". IGN . Archived from the original on December 10, 2019. Retrieved December 9, 2019.
    4. 1 2 3 "ソニックチーム物語". Sega Magazine (in Japanese). No. 3. SoftBank Creative. January 1997. pp. 9–13. (Translation by Shmuplations. Archived December 17, 2019, at the Wayback Machine ).
    5. 1 2 3 4 5 Petronille, Mark; Audureau, William (January 1, 2013). The History of Sonic the Hedgehog. Pix'n Love. ISBN   1926778561.
    6. 1 2 "Sonic's Architect: GI Interviews Hirokazu Yasuhara". Game Informer . Vol. 13 no. 124. August 2003. pp. 114–116.
    7. "Game Design Psychology: The Full Hirokazu Yasuhara Interview". Gamasutra . Archived from the original on July 9, 2018. Retrieved July 9, 2018.
    8. 1 2 3 Sonic the Hedgehog GameTap Retrospective Pt. 3/4. GameTap. February 17, 2009. Event occurs at 1:25. Archived from the original on July 21, 2016. Retrieved September 24, 2011. cf. "Review: Sonic Jam". Sega Saturn Magazine . No. 22. August 1997. p. 68. The original Megadrive game sold over 14 million copies.
    9. Retro Gamer staff (2013). "Sonic Boom: The Success Story of Sonic the Hedgehog". Retro Gamer — The Mega Drive Book. London, UK: Imagine Publishing. p. 31.
    10. Sheffield, Brandon (December 4, 2009). "Out of the Blue: Naoto Ohshima Speaks". Gamasutra . UBM plc. Archived from the original on July 16, 2015. Retrieved February 15, 2012. The original Nights was chiefly made with the Japanese and European audiences in mind -- Sonic, meanwhile, was squarely aimed at the U.S. market ... [Sonic is] a character that I think is suited to America -- or, at least, the image I had of America at the time. ... Well, he's blue because that's Sega's more-or-less official company color. His shoes were inspired by the cover to Michael Jackson's Bad, which contrasted heavily between white and red -- that Santa Claus-type color. I also thought that red went well for a character who can run really fast, when his legs are spinning.
    11. Brian Ashcraft (December 7, 2009). "Sonic's Shoes Inspired by Michael Jackson". Kotaku . Archived from the original on October 30, 2015. Retrieved December 13, 2009.
    12. "Sega on the Cutting Edge - Sonic the Hedgehog 2". Sega Visions . Infotainment World: 20–21. September 1992.
    13. 1 2 3 4 5 Smith, Sean (2006). "Company Profile: Sonic Team". Retro Gamer . No. 26. Imagine Publishing. pp. 24–29. ISSN   1742-3155.
    14. Fahs, Travis (April 21, 2009). "IGN Presents the History of Sega (page 4)". IGN. Archived from the original on February 21, 2014. Retrieved October 5, 2013.
    15. Horowitz, Ken (December 5, 2006). "Interview: Mark Cerny". Sega-16. Archived from the original on October 17, 2014. Retrieved June 20, 2014. Mark Cerny: I heard, I kid you not, that the characters were "unsalvageable," that this was a "disaster," and that "procedures would be put in place to make sure that this sort of thing would never happen again." These "procedures" included a proposed "top ten list of dos and don'ts" to follow when making products for the American market. Additionally, I was told that the marketing group would be contacting a known character designer (I won't reveal the name, but it made me cringe at the time) to make a character that showed exactly what the American market needed. Needless to say, this character designer would have been totally inappropriate for the Japanese market. Not that great for the American market either, I suspect.
    16. Fahs, Travis (April 21, 2009). "IGN Presents the History of Sega (page 5)". IGN. Archived from the original on March 22, 2016. Retrieved October 5, 2013.
    17. McFerran, Damien "Damo" (March 8, 2007). "Hardware Focus - Sega Megadrive / Genesis". Nintendo Life. Archived from the original on October 7, 2011. Retrieved October 19, 2007.
    18. Lesser, Hartley; Lesser, Patricia & Lesser, Kirk (October 1991). "The Role of Computers". Dragon. No. 174. pp. 57–64. ISSN   1062-2101.
    19. "Sonic The Hedgehog". Review. Computer and Video Games . No. 117. August 1991. pp. 16–19. ISSN   0261-3697.
    20. 1 2 3 4 5 6 "The Essential 50 Part 28 - Sonic the Hedgehog". . Ziff Davis. Archived from the original on November 17, 2014. Retrieved July 21, 2014.
    21. 1 2 3 4 Horowitz, Ken (June 11, 2007). "Developer's Den: Sega Technical Institute". Sega-16. Archived from the original on April 8, 2016. Retrieved April 16, 2014.
    22. 1 2 Day, Ashley (2007). "Company Profile: Sega Technical Institute". Retro Gamer . No. 36. Imagine Publishing. pp. 28–33.
    23. Linneman, John (April 8, 2018). "DF Retro: Sonic CD - under-appreciated but still brilliant today". Eurogamer . Gamer Network. Archived from the original on April 8, 2018. Retrieved April 8, 2018.
    24. Kai, Norton (April 1993). "Sonic CD Splits Up". Sega Force . No. 16. p. 12.
    25. 1 2 3 4 Thorpe, Nick (2016). "The Story of Sonic the Hedgehog". Retro Gamer . No. 158. Imagine Publishing. pp. 18–25.
    26. 1 2 Minotti, Mike (October 18, 2019). "The RetroBeat: Sonic & Knuckles turned a problem into success 25 years ago". VentureBeat . Archived from the original on May 21, 2020. Retrieved March 9, 2020.
    27. Shea, Brian (October 10, 2016). "How Sonic 3 Became Two Separate Games". Game Informer . Retrieved March 7, 2020.
    28. Humphreys, Andrew (March 1994). "Review: Sonic 3". Hyper . pp. 26–29.
    29. "Review Crew: Sonic & Knuckles". Electronic Gaming Monthly . No. 65. EGM Media, LLC. December 1994. p. 34.
    30. GamesRadar+ staff (June 21, 2017). "Best Sega Genesis/Mega Drive games of all time". GamesRadar+ . p. 5. Archived from the original on June 3, 2020. Retrieved March 12, 2020.
    31. Machin, Cole (January 2011). "The Making of: Sonic Spinball". Retro Gamer . No. 85. Bournemouth: Imagine Publishing. pp. 36–39. ISSN   1742-3155.CS1 maint: ref=harv (link)
    32. Szczepaniak, John (August 11, 2014). The Untold History of Japanese Game Developers: Volume 1. SMG Szczepaniak. pp. 346–347. ISBN   0992926009.
    33. Ronaghan, Neal (June 21, 2013). "Grinding Game Gears: An Overview of Sonic's Portable Origins". Nintendo World Report. Archived from the original on March 13, 2018. Retrieved March 7, 2018.
    34. "Puyo Puyo". Hardcore Gaming 101. Archived from the original on February 20, 2016. Retrieved February 11, 2017.
    35. 1 2 3 4 Szczepaniak, John (2018). The Untold History of Japanese Game Developers: Volume 3. S.M.G Szczepaniak. pp. 301–302, 308–309. ISBN   0992926084.
    36. 1 2 "Knuckles Chaotix Review". January 1, 2000. Archived from the original on July 22, 2012. Retrieved June 13, 2017.
    37. Hunt, Stuart; Jones, Darran (December 2007). "The Making of... Nights". Retro Gamer. No. 45. Imagine Publishing.
    38. "Sega's new beginning". Edge . No. 89. Future plc. October 2000. pp. 68–78. ISSN   1350-1593.
    39. "Topics: The 1998". Sega Saturn Magazine (in Japanese). Soft Bank Publishing. January 23, 1998. pp. 18–29.
    40. Langshaw, Mark (February 8, 2014). "Sonic the Hedgehog 3 retrospective: Sega mascot's finest outing". Digital Spy. Archived from the original on June 23, 2018. Retrieved January 22, 2015.
    41. 1 2 3 Horowitz, Ken (June 19, 2007). "Interview: Mike Wallis". Sega-16. Archived from the original on September 4, 2009. Retrieved April 7, 2015.
    42. "Sonic 3D". Previews. Mean Machines Sega. No. 52. Peterborough: Emap International Limited. February 1997. pp. 84, 85. ISSN   0967-9014.
    43. "Who Won the Videogame Wars of 1996?". Next Generation . No. 28. Imagine Media. April 1997. p. 17.
    44. Walk, Gary Eng (December 13, 1996). "Sonic 3D Blast Review". Entertainment Weekly . Archived from the original on April 27, 2009. Retrieved July 19, 2013.
    45. Shau, Austin (December 12, 2007). "Sonic 3D Blast Review (Genesis)". GameSpot . Retrieved February 27, 2015.
    46. "Sonic 3D Blast for Genesis". GameRankings. Archived from the original on June 21, 2012. Retrieved July 19, 2013.
    47. 1 2 Fahs, Travis (May 29, 2008). "Sonic X-treme Revisited". IGN . Ziff Davis. Archived from the original on July 12, 2017. Retrieved November 11, 2017.
    48. 1 2 "The Making Of... Sonic X-treme". Edge . Future plc. 15 (177): 100–103. July 2007. Archived from the original on April 17, 2013 via Edge Online.
    49. "In the Studio". Next Generation. No. 23. Future US. November 1996. p. 17.
    50. Sewart, Greg (August 5, 2005). "Sega Saturn: The Pleasure And The Pain". Ziff Davis. Archived from the original on October 21, 2012. Retrieved March 17, 2014.
    51. Houghton, David (April 24, 2008). "Page 7 – The greatest Sonic game we never got to play". GamesRadar . Retrieved July 19, 2013.
    52. "Sonic Boom!". Sega Saturn Magazine : 58–63. January 1997.
    53. "Sonic 3D Blast: Blast's the Name for a Blast of a Game". Electronic Gaming Monthly . No. 89. Ziff Davis. December 1996. pp. 230–1.
    54. "Sonic 3D". Computer and Video Games (183): 42–43. February 1997.
    55. CVG Staff (June 1997). "Tokyo Game Show: Project Sonic". Computer and Video Games. Future plc (187): 20–21.
    56. "Nights Adventure". Retro Gamer (45). December 2007.
    57. Nutter, Lee (July 1997). "A Blast from the Past!". Sega Saturn Magazine . No. 21. Emap International Limited. p. 39.
    58. 1 2 Williamson, Coliun (November 14, 2014). "Sonic Jam overview". AllGame . Archived from the original on November 14, 2014. Retrieved November 14, 2016.
    59. "Travellers Tales: Sonic R Programmer Speaks!". Sega Saturn Magazine . No. 24. EMAP. October 1997. p. 25. ISSN   1360-9424 . Retrieved August 25, 2016.
    60. "Review Crew: Sonic Jam". Electronic Gaming Monthly . No. 99. Ziff Davis. October 1997. p. 52.
    61. "Sonic Jam review: Where's the Sonic Peanut Butter?". Game Revolution . CraveOnline. June 6, 2004. Archived from the original on November 17, 2015. Retrieved November 11, 2016.
    62. Dan Elektro (February 1998). "Pro Review: Sonic R". GamePro . Vol. 10 no. 103. International Data Group. p. 98. ISSN   1042-8658 . Retrieved August 25, 2016.
    63. MacDonald, Ryan (December 22, 2007). "Sonic R Review for Saturn". GameSpot . Archived from the original on March 13, 2012. Retrieved June 16, 2014.
    64. Buchanan, Levi (February 2, 2009). "What Hath Sonic Wrought? Vol. 10 – Saturn Feature at IGN". IGN . Ziff Davis. Archived from the original on May 21, 2013. Retrieved July 23, 2012.
    65. Thorpe, Nick (December 28, 2018). "The Making of: Sonic Adventure". Retro Gamer . PressReader. Archived from the original on January 2, 2019. Retrieved January 25, 2019.
    66. 1 2 3 Nutt, Christian (November 3, 2011). "Sega's Iizuka On 'Better Defining The Direction Of The Sonic Series'". Gamasutra . Archived from the original on April 7, 2016. Retrieved March 12, 2020.
    67. Cundy, Matt; Houghton, David; Irvine, Nathan; Towell, Justin (September 26, 2011). "Top 7... horrendously buggy games we loved anyway". GamesRadar+ . p. 2.
    68. 1 2 3 Cook & Becker (April 7, 2017). "How Sega moved Sonic from 2D to 3D". Polygon . Vox Media. Archived from the original on July 5, 2017. Retrieved November 11, 2017.
    69. Fahey, Rob (November 24, 2006). "Sonic The Hedgehog". Eurogamer . Gamer Network. Archived from the original on March 1, 2017. Retrieved November 13, 2017.
    70. IGN Staff (June 4, 2001). "Interview With Sonic Adventure 2 Director Takashi Iizuka". IGN . Ziff Davis. Archived from the original on March 23, 2016. Retrieved November 13, 2017.
    71. McFerran, Damien (March 29, 2016). "The Guy Who Designed Sonic The Hedgehog Supervised On Mario & Sonic At The Rio Olympics". Nintendo Life . Archived from the original on February 29, 2020. Retrieved February 29, 2020.
    72. 1 2 3 4 Boutros, Daniel (August 4, 2006). "A Detailed Cross-Examination of Yesterday and Today's Best-Selling Platform Games". Gamasutra . UBM plc. Archived from the original on July 2, 2016. Retrieved November 12, 2017.
    73. "Dreamcast may be discontinued, Sega says". USA Today . January 24, 2001. Archived from the original on December 25, 2014. Retrieved December 9, 2014.
    74. Ahmed, Shahed (January 31, 2001). "Sega announces drastic restructuring". GameSpot. Archived from the original on May 10, 2015. Retrieved December 9, 2014.
    75. "ゲームキューブ". Sonic Channel (in Japanese). Sega. Archived from the original on March 4, 2016. Retrieved February 29, 2020.
    76. Mirabella, Fran III (February 8, 2002). "Sonic Adventure 2: Battle". IGN. Archived from the original on December 22, 2014. Retrieved December 28, 2014.
    77. Interview section. "Yuji Naka and Takashi Iizuka Speak on Sonic Heroes". Sega. Archived from the original on March 21, 2006. Retrieved April 1, 2014.
    78. "Takashi Iizuka Q&A". Nintendo Power (173). November 2003. Archived from the original on July 26, 2015. Retrieved August 23, 2018.
    79. "Afterthoughts: Sonic Heroes -- A candid chat with Sonic Team's lord of the rings". Electronic Gaming Monthly . Archived from the original on March 30, 2004. Retrieved November 18, 2017.
    80. 1UP Staff (January 1, 2004). "Sonic Heroes Review for GC". . Archived from the original on June 29, 2011. Retrieved March 4, 2018.
    81. Casamassina, Matt (January 5, 2004). "Sonic Heroes". IGN . Archived from the original on March 24, 2018. Retrieved March 2, 2018.
    82. Davis, Ryan (January 6, 2004). "Sonic Heroes Review". GameSpot . Archived from the original on August 26, 2015. Retrieved March 2, 2018.
    83. Deci, TJ. "Shadow the Hedgehog for GameCube Overview". AllGame . Archived from the original on November 15, 2014. Retrieved January 26, 2009.
    84. "Game of the week; Shadow the Hedgehog; GameCube/PS2/Xbox (rrp $79.95) Rating: 3.5/5". Herald Sun (1): F02. February 26, 2006.
    85. Klepek, Patrick (May 24, 2005). "Shadow the Hedgehog Preview from". Ziff Davis. Archived from the original on November 8, 2012. Retrieved February 9, 2009.
    86. 1 2 Helgeson, Matt (January 2006). "Shadow the Hedgehog for GameCube Review". Game Informer . Archived from the original on May 26, 2006. Retrieved March 27, 2009.
    87. 1 2 Mueller, Greg (November 21, 2005). "Shadow the Hedgehog for GameCube review". GameSpot . Archived from the original on January 5, 2014. Retrieved June 25, 2014.
    88. "Sega Sammy Holdings Annual Report 2006" (PDF). Sega Sammy Holdings. July 2006. p. 47. Archived (PDF) from the original on March 30, 2016. Retrieved November 27, 2017.
    89. "Fiscal Year Ended March 2007 Full Year Results" (PDF). Sega Sammy Holdings. May 14, 2007. p. 15. Archived (PDF) from the original on July 29, 2016. Retrieved November 27, 2017.
    90. IGN Staff (August 6, 1999). "Sonic on NeoGeo Pocket Color". IGN. Archived from the original on August 10, 2016.
    91. Shamoon, Evan (March 2000). "Pocket Sonic" (PDF). Official Dreamcast Magazine. No. 4. p. 79. Archived (PDF) from the original on February 11, 2018.
    92. Harris, Craig (April 18, 2001). "GBA Sonic Developed By Dimps". IGN. Ziff Davis. Archived from the original on August 18, 2016. Retrieved November 2, 2017.
    93. IGN Staff (August 17, 2009). "The DSi Virtual Console Wishlist". IGN. Archived from the original on March 24, 2016. Retrieved February 11, 2018.
    94. Harris, Craig (May 13, 2004). "E3 2004: Yuji Naka Talks Sonic". IGN . Archived from the original on July 14, 2018. Retrieved November 2, 2018.
    95. Harris, Craig (November 11, 2005). "IGN: Sonic Rush Review". IGN . Archived from the original on April 24, 2012. Retrieved February 19, 2009.
    96. Gerstmann, Jeff (November 14, 2005). "Sonic Rush for DS Review - DS Sonic Rush Review". GameSpot . Archived from the original on March 2, 2009. Retrieved February 20, 2009.
    97. 1 2
    98. "Yojiro Ogawa Interview". GameSpy . July 22, 2005. Archived from the original on July 28, 2012. Retrieved February 21, 2018.
    99. Huhtala, Alex (April 2001). "Reviews: Sonic Shuffle" (PDF). Official Dreamcast Magazine. No. 18. pp. 66–69. Archived (PDF) from the original on July 13, 2018. Retrieved June 10, 2020.
    100. Harris, Craig (May 28, 2003). "Sonic Pinball Party Review". IGN. Archived from the original on December 10, 2015. Retrieved June 25, 2016.
    101. Harris, Craig (January 13, 2004). "Sonic Battle". IGN . Archived from the original on October 31, 2019. Retrieved October 31, 2019.
    102. Ouroboros (March 1, 2006). "Sonic Riders Review". GamePro . Archived from the original on November 7, 2009. Retrieved May 2, 2018.
    103. Dunham, Jeremy (September 17, 2005). "TGS 2005: Sonic PS3 Named". IGN . Archived from the original on June 24, 2015. Retrieved January 8, 2013.
    104. Metts, Jonathan (June 23, 2006). "News Article: Sonic on GBA for 15th Anniversary". Nintendo World Report. Archived from the original on May 10, 2009. Retrieved September 12, 2014.
    105. "Sonic Team Interview November 2005". Kikizo. November 30, 2005. Archived from the original on March 6, 2016. Retrieved May 3, 2018.
    106. Theobald, Phil (January 20, 2006). "Sega Talks Sonic Riders". GameSpy . Archived from the original on March 16, 2013. Retrieved May 4, 2018.
    107. 1 2 3 4 Shea, Brian (November 14, 2016). "Where Sonic Went Wrong". Game Informer . Archived from the original on August 8, 2017. Retrieved August 7, 2017.
    108. Eddy, Andy (May 24, 2006). "E3 2006: Sonic Team Interview". TeamXbox . pp. 1–3. Archived from the original on October 22, 2013. Retrieved February 22, 2019.
    109. Torres, Ricardo (May 8, 2006). "E3 06: Sonic the Hedgehog Preshow Report: Sonic Goes Next-Gen". GameSpot . Archived from the original on April 25, 2015. Retrieved March 20, 2017.
    110. Fahey, Mike (November 15, 2016). "Ten Years Ago Sonic The Hedgehog Was At Its Worst". Kotaku Australia. Archived from the original on November 17, 2016. Retrieved March 18, 2017.
    111. "Sonic the Hedgehog Genesis for Game Boy Advance Reviews". Metacritic. Archived from the original on February 17, 2012. Retrieved September 12, 2014.
    112. Lee, Patrick (June 23, 2016). "The best, worst, and weirdest games from 25 years of Sonic The Hedgehog". The A.V. Club . Archived from the original on January 17, 2017. Retrieved May 31, 2017.
    113. "The 100 worst games of all time". GamesRadar+ . December 2, 2015. Archived from the original on February 2, 2017. Retrieved May 31, 2017.
    114. Thomason, Steve (March 2007). "New Blue". Nintendo Power . No. 213. Future plc. pp. 32–36.
    115. Burman, Rob (February 6, 2007). "Lifting the lid on Sonic's Secret Rings". IGN . Archived from the original on July 21, 2012. Retrieved November 9, 2009.
    116. Casamassina, Matt (February 6, 2009). "Hands-on Sonic & The Black Knight". IGN . Archived from the original on July 7, 2018. Retrieved November 9, 2019.
    117. Fahey, Mike (July 21, 2008). "Sonic And The Black Knight Isn't A Bad Dream". Kotaku . Archived from the original on June 15, 2017. Retrieved November 9, 2019.
    118. Bozon (January 14, 2008). "Sonic Riders: Zero Gravity Review". IGN . Retrieved November 9, 2019.
    119. Harris, Craig (September 17, 2007). "Sonic Rush Adventure Review". IGN . Archived from the original on November 16, 2019. Retrieved November 9, 2019.
    120. Matt Casamassina (February 15, 2008). "Sonic Chronicles: The Dark Brotherhood Interview". IGN . Archived from the original on April 3, 2012. Retrieved February 16, 2008.
    121. Yoon, Andrew (December 9, 2006). "PSP Fanboy review: Sonic Rivals". Engadget . Archived from the original on December 15, 2019. Retrieved December 15, 2019.
    122. Bishop, Sam (November 14, 2007). "Sonic Rivals 2 Review". IGN . Archived from the original on November 16, 2019. Retrieved December 15, 2019.
    123. Riley, Patrick (October 16, 2008). "SEGA_SonicUnleashed's Blog - Sonic Unleashed - A New Direction". IGN . Archived from the original on May 24, 2012. Retrieved December 6, 2008.
    124. Robinson, Andy (April 9, 2008). "Sonic Unleashed "has no relation" to Sonic 360/PS3". Computer and Video Games . Archived from the original on April 12, 2008. Retrieved April 13, 2008.
    125. Thomason, Steve (August 2008). "Back on the Fast Track". Nintendo Power . Future plc: 67–69.
    126. Doree, Adam (November 12, 2008). "Sonic Unleashed: Yoshi Hashimoto Interview". Kikizo. Archived from the original on November 2, 2014. Retrieved July 9, 2014.
    127. McWhertor, Michael (March 2, 2009). "You Haven't Seen The Last Of Sonic The Werehog". Kotaku . Archived from the original on November 27, 2019. Retrieved November 9, 2019.
    128. Inemoto, Tetsuya (December 28, 2011). "Producer Takashi Iizuka speaks, "Sonic Generations White Space-Time Space / Blue Adventure" Production Secret Story and Sonic Series 20 Years of Progress". (in Japanese). Aetas, Inc. Archived from the original on August 21, 2017. Retrieved July 11, 2018.
    129. Higham, Rupert (October 6, 2010). "Interview: Sonic Team's Takashi Iizuka". Kikizo. Superglobal Ltd. Archived from the original on March 27, 2018. Retrieved March 27, 2018.
    130. 1 2 3 4 5 6 7 8 9 10 11 Hester, Blake. "Sonic the Hedgehog's long, great, rocky history". Polygon . Vox Media. Archived from the original on December 1, 2016. Retrieved November 19 2016.
    131. "Who's making Sonic 4? Well, since you asked..." Sega Forums. February 24, 2011. Archived from the original on January 4, 2013. Retrieved June 30, 2013.
    132. Mix, John (October 14, 2010). "Review: Wonky Physics, Nasty Levels Ruin Sonic the Hedgehog 4". Wired . Archived from the original on August 9, 2012. Retrieved March 27, 2012.
    133. Plunkett, Luke (December 29, 2011). "Sonic 4: Episode 2 is Already Changing Stuff". Kotaku . Archived from the original on March 16, 2012. Retrieved March 27, 2012.
    134. 1 2 McWhertor, Michael (June 18, 2010). "Sonic Colors Sends A Hedgehog Into (Mario's) Space". Kotaku . Archived from the original on March 31, 2019. Retrieved November 9, 2019.
    135. 1 2 Towell, Justin (October 31, 2011). "Sonic Generations review". GamesRadar+ . Archived from the original on February 10, 2017. Retrieved October 2, 2017.
    136. Sterling, Jim (October 31, 2011). "Review: Sonic Generations". Destructoid . Archived from the original on November 29, 2016. Retrieved October 3, 2017.
    137. Whitehead, Dan (December 9, 2011). "Sonic Generations 3DS Review". Eurogamer . Archived from the original on March 30, 2016. Retrieved October 3, 2017.
    138. 1 2 Turi, Tim (November 22, 2011). "Sonic Generations Review: Dimps' Reliable Quality Skips A Generation". Game Informer . Archived from the original on August 25, 2019. Retrieved November 9, 2019.
    139. 1 2 3 Karmali, Luke (May 17, 2013). "Nintendo Announces Sonic: Lost World". IGN . Archived from the original on February 22, 2014. Retrieved December 13, 2013.
    140. Diver, Mike (January 20, 2015). "Sonic the Hedgehog Needs to Die". Vice . Archived from the original on October 25, 2019. Retrieved November 9, 2019.
    141. Pitcher, Jenna (June 13, 2013). "Sonic Lost World adds 'spice' and usability to the series". Polygon . Archived from the original on December 13, 2013. Retrieved December 13, 2013.
    142. Ponce, Tony (May 28, 2013). "Sonic Lost World trailer reminds me of Sonic X-treme". Destructoid . Archived from the original on August 6, 2013. Retrieved December 13, 2013.
    143. Lien, Tracey (February 6, 2014). "Sonic Boom gives Sega's series a new look, two new developers". Polygon . Vox Media. Archived from the original on February 7, 2014. Retrieved February 6, 2014.
    144. 1 2 Davidson, Joey (November 4, 2013). "Sonic Lost World review: On The Path to Redemption". TechnoBuffalo. Archived from the original on November 10, 2019. Retrieved November 9, 2019.
    145. "Mario & Sonic at the Sochi 2014 Olympic Winter Games for Wii U Reviews". Metacritic. Archived from the original on March 10, 2016. Retrieved November 9, 2013.
    146. Petty, Jared (September 27, 2016). "Sonic Boom: Fire and Ice Review". IGN . Archived from the original on August 18, 2017. Retrieved November 9, 2019.
    147. 1 2 Mawson, Chris (April 2, 2015). "Sonic the Hedgehog 3 Remastered Interview With Christian 'The Taxman' Whitehead". Power Up Gaming. Archived from the original on November 10, 2016. Retrieved December 1, 2016.
    148. Nelson, Jared (October 19, 2014). "Hey Sega! This 'Sonic 3 & Knuckles' iOS Port Needs to Happen". TouchArcade . Archived from the original on September 3, 2019. Retrieved November 9, 2019.
    149. Musgrave, Shaun (December 16, 2013). "'Sonic The Hedgehog 2 Remastered' Review – Setting Right What Once Went Wrong". TouchArcade . Archived from the original on September 9, 2019. Retrieved November 9, 2019.
    150. Don, Hatfield (March 7, 2013). "App of the Week: 'Sonic Dash'". MTV . Archived from the original on November 10, 2019. Retrieved November 9, 2019.
    151. Usher, Anthony (March 4, 2013). "Sega officially announces Blue Blur-themed endless-runner Sonic Dash for iOS". Pocket Gamer . Archived from the original on November 10, 2019. Retrieved November 9, 2019.
    152. Forde, Matthew (February 14, 2020). "Nearly seven years on, Sonic Dash is showing no signs of slowing down". Archived from the original on March 11, 2020. Retrieved April 2, 2020.
    153. Cowley, Ric (July 1, 2015). "Sonic Dash 2: Sonic Boom soft-launched on Android [Update]". Pocket Gamer . Archived from the original on November 10, 2019. Retrieved November 9, 2019.
    154. 1 2 Musgrave, Shaun (June 30, 2015). "An Interview With Sonic Team's Takashi Iizuka About 'Sonic Runners'". TouchArcade . Archived from the original on August 6, 2018. Retrieved August 18, 2018.
    155. "Sega Networks Strategic Presentation" (PDF). Sega. December 18, 2015. p. 11. Archived (PDF) from the original on June 1, 2016. Retrieved August 20, 2018.
    156. Whitehead, Thomas (May 28, 2016). "Sonic Runners, SEGA's Mobile Release by the Sonic Team, is Getting Shut Down". Nintendo Life . Archived from the original on August 22, 2018. Retrieved August 20, 2018.
    157. Dotson, Carter (June 12, 2017). "'Sonic Runners Adventure' Released on Gameloft's Android Store in Some Countries". TouchArcade . Archived from the original on August 6, 2018. Retrieved August 21, 2018.
    158. "Sonic Runners Adventure for iPhone/iPad Reviews". Metacritic. Archived from the original on May 5, 2019. Retrieved November 9, 2019.
    159. Johnson, Leif (July 23, 2016). "Sonic the Hedgehog Is Really Trying to Get His Act Together for 25th Anniversary". Vice . Archived from the original on August 19, 2019. Retrieved November 10, 2019.
    160. Compendio, Chris (September 22, 2017). "Sonic the Hedgehog Has Too Many Friends in Sonic Forces Story Trailer". Paste . Archived from the original on November 10, 2019. Retrieved November 10, 2019.
    161. Sarkar, Samit (May 30, 2017). "Sonic Mania arrives in August, watch the awesome new trailer". Polygon . Archived from the original on November 10, 2019. Retrieved November 10, 2019.
    162. Casey (July 31, 2017). "Watch The Full Sonic Mania Panel From San Diego Comic-Con". Siliconera . Archived from the original on June 17, 2019. Retrieved November 10, 2019.
    163. Kemps, Heidi (August 14, 2017). "Sonic Mania Review". IGN . Archived from the original on August 15, 2017. Retrieved August 14, 2017.
    164. 1 2 L Patterson, Mollie (August 15, 2017). "Sonic Mania review". EGMNow . Archived from the original on August 16, 2017. Retrieved August 15, 2017.
    165. 1 2 Whitehead, Thomas (August 16, 2017). "Sonic Mania Review - Switch eShop". Nintendo Life . Archived from the original on August 18, 2017. Retrieved August 16, 2017.
    166. 1 2 Parish, Jeremy (November 5, 2017). "Sonic Forces review". Polygon . Archived from the original on November 12, 2019. Retrieved November 10, 2019.
    167. Gartenberg, Chaim (June 15, 2017). "Sonic Mania and Sonic Forces show Sega's wildly differing views on its flagship franchise". VentureBeat . Archived from the original on June 17, 2017. Retrieved November 10, 2019.
    168. 1 2
    169. Kemps, Heidi (November 10, 2017). "Sonic Forces Review". IGN . Archived from the original on October 14, 2019. Retrieved November 10, 2017.
    170. Andrews, Stuart (November 8, 2017). "Sonic Forces review: 'A short game of short levels, yet desperately short of real ideas'". GamesRadar. Archived from the original on November 8, 2017. Retrieved November 8, 2017.
    171. 1 2 Wong, Alistar (March 16, 2019). "Next Sonic The Hedgehog Game In Production; Team Sonic Racing Customization Detailed". Siliconera . Archived from the original on March 22, 2019. Retrieved March 17, 2019.
    172. 1 2 Wales, Matt (February 5, 2018). "Evidence of new Sonic Racing game mounts". Eurogamer . Archived from the original on June 12, 2018. Retrieved May 30, 2018.
    173. 1 2 Robinson, Martin (June 5, 2018). "Team Sonic Racing is another arcade racer that wants to reinvent the genre". Eurogamer . Archived from the original on June 8, 2018. Retrieved June 7, 2018.
    174. Sonic Stadium (June 24, 2018). Sonic Stadium @ E3 2018 Interview with Aaron Webber (Interview with Aaron Webber). Archived from the original on July 17, 2018. Retrieved June 26, 2018.
    175. 1 2 3 4 McWhertor, Michael (March 21, 2018). "The origins of Sonic the Hedgehog". Polygon . Archived from the original on August 25, 2019. Retrieved December 1, 2019.
    176. 1 2 Kemps, Heidi (September 30, 2005). "Sega's Yuji Naka Talks!". GameSpy . Archived from the original on March 6, 2016. Retrieved January 27, 2019.
    177. Loveridge, Sam (June 23, 2016). "14 things you didn't know about Sonic the Hedgehog". Digital Spy . Archived from the original on April 16, 2020. Retrieved March 11, 2020.
    178. 1 2 3 4 Worgaftik, Gabe (November 8, 2018). "Sonic The Hedgehog was originally from Nebraska, ate trash". The A.V. Club . Archived from the original on November 21, 2019. Retrieved December 1, 2019.
    179. 1 2 3 4 5 6 Caoili, Eric (April 13, 2009). "Sonic The Hedgehog Bible: Never Before Revealed Secret Origins". GameSetWatch . Archived from the original on October 3, 2019. Retrieved December 1, 2019.
    180. 1 2 Gilbert, Brian (January 14, 2019). "The Sonic bible destroys the entire Sonic franchise". Polygon . Archived from the original on January 16, 2019. Retrieved January 14, 2019.
    181. 1 2 3 Katala, Kurt (July 6, 2018). "Sonic the Hedgehog". Hardcore Gaming 101. Archived from the original on November 20, 2019. Retrieved February 14, 2020.
    182. 1 2 Sonic Team (December 23, 1998). Sonic Adventure (Dreamcast). Sega. Level/area: "?" Story.
    183. Sega (2002). "Characters: Shadow". Sonic Adventure 2 Instruction Manual. Sega. p. 7.
    184. Sega (2004). "Team Dark". Sonic Heroes Instruction Manual. Sega. p. 8.
    185. "Prologue". Sonic the Hedgehog (in Japanese). Sega. pp. 4–5.
    186. Chichizola, Corey (February 28, 2020). "Why Sonic The Hedgehog's Movie Doesn't Include Super Sonic And The Chaos Emeralds". CinemaBlend. Archived from the original on March 12, 2020. Retrieved March 5, 2020.
    187. Hanshaw, Neil; Hanshaw, Carol Ann (1994). "Save Floating Island!". Sonic & Knuckles Instruction Manual. Sega. p. 3.
    188. "Sonic's Creator - Yuji Naka". Sega. Archived from the original on June 5, 1997. Retrieved March 13, 2018.
    189. 1 2 3 4 5 6