Gun Frontier (video game)

Last updated

Gun Frontier
Gun Frontier arcade flyer.jpg
Developer(s) Taito
Publisher(s) Taito
Producer(s) Takatsuna Senba
Designer(s) Brody Tadashi
Takayuki Ogawa
Yasuhisa Watanabe
Programmer(s) Naoya Kuroki
Takamasa Hori
Artist(s) Hiroyasu Nagai
Composer(s) Hidetoshi Fukumori (uncredited)
Platform(s) Arcade, Sega Saturn, Microsoft Windows, PlayStation 2, Xbox, PlayStation 4, Nintendo Switch
Release1990
Genre(s) Vertically scrolling shooter
Mode(s) Single-player, co-op
Arcade system Taito F2 System

Gun Frontier [lower-alpha 1] is a 1990 vertically scrolling shooter arcade video game developed and originally published by Taito in Japan. Set on the fictional planet of Gloria in the 22nd century, where an alien race of space pirates known as the Wild Lizards have invaded the location and enslaved its inhabitants for gold extraction, players assume the role of settlers who were part of the planet's colonization team taking control of revolver-shaped fighter aircraft in an attempt to overthrow the invaders and free their surviving civilization from slavery.

Contents

Conceived by Takatsuna Senba during his time working at Taito, which served as his first original work under the role of both designer and producer, Gun Frontier became one of the several projects created to promote the then-newly released Taito F2 System hardware and had a turbulent development cycle, undergoing through various changes before its eventual launch to the market. Initially launched for the arcades, the game was later ported to the Sega Saturn by GOO! and published exclusively in Japan by Xing Entertainment on 25 September 1997 as part of their Arcade Gear series of releases for the console, and it has since been re-released through compilations such as Taito Legends 2 across various platforms in 2006, with each one featuring several changes compared to the original version. The title is dedicated to F2 System hardware engineer Katsujiro Fujimoto, who died during development in an accident.

Gun Frontier has been met with mixed critical reception from video game magazines and dedicated outlets since its initial launch in arcades and later on the Saturn. Despite garnering mixed response from the audience, Senba and some of the members in the development team would go on to create a horizontally scrolling shooter for Taito after its release; Metal Black , which was produced under the internal working title "Project Gun Frontier 2", although its actual connection to the original entry is loose. Battle Garegga and Recca programmer Shinobu Yagawa has since referred it as one of his favorite titles.

Gameplay

Arcade version screenshot ARC Gun Frontier.png
Arcade version screenshot

Gun Frontier is a space Western-themed vertically scrolling shoot 'em up game. Players assume the role of planetary settlers who formed part in the colonization team of planet Gloria taking control of revolver-shaped fighter aircraft through six stages, in a last-ditch effort to defeat the Wild Lizards and free their surviving people from enslavement by the space pirates. [1] [2] [3] [4] Players start with dual machine guns which are strengthened and multiplied by upgrades that come in the form of US dimes taken from buffalo-shaped enemies and every five dimes empowers the aircraft's firepower. Players also start with a set number of bombs that can be upgraded to deal further destruction against enemies and scenery by collecting gold bars from destroyed ground forces and once a player accumulates 25 bombs, they are granted access to the Bomber Max, the strongest of the player's bombs. [1]

The direction of the blast radius of the player's bombs correspond to their movement. If the player moves their plane to the lower right of the screen and launches their bombs, then the direction the bomb will travel in the opposite direction of the aircraft's movement. This feature can only be used when a player has a large bomb count as only having one or two bombs will result in a small directionless explosion and like most bombs found in other shoot 'em ups released at the time, the bombs also work as a shield against incoming enemy fire. Bombing on determined locations is also crucial for reaching high-scores to obtain extra lives, as certain setpieces in some stages hosts a bonus secret within their scenery, as well as destroying enemies on certain spots. [5]

A recovery system after using a credit during the continue screen is used, as players can pick up a spinning coin with two different sides: a silver side and a gold side. If the player collects the coin on its silver side, then the player merely gains another coin for their guns, but if the player collects the coin on its gold side, then the player's firepower and bomb supply will be maximized to their full power. [4] The game also uses a checkpoint system in which a downed single player will start off at the beginning of the checkpoint they managed to reach before dying. The title also employs an anti-autofire mechanism where the difficulty will max out by the second stage if the player is sustaining too fast of a fire rate. [4] Getting hit by enemy fire will result in losing a live, as well as a penalty of decreasing the aircraft's weapon to one level and once all lives are lost, the game is over unless the player inserts more credits into the arcade machine to continue playing.

Plot

Gun Frontier takes place in a futuristic sci-fi setting during the 22nd century, where mankind has managed to expand into the stars beyond the Milky Way galaxy and have started to colonize uninhabited planets through different solar systems, among them being the Earthlike planet known as Gloria, which happened to harness an enormous natural supply of gold and this discovery would later prove to be pivotal in the emigration towards Gloria, so much that due to the expensive cost of reaching the location, immigrants would be impoverished but life on the planet thrived in an ambient similar to the American Old West and although they were poor, gold trading aided the Glorians in advancing their technology and knowledge a lot that talented inventors and engineers lived among the inhabitants. However, the Glorians were not the only living beings who were tempted by the abundance of gold on the planet, as an alien race of space pirates known as the Wild Lizards quickly invaded the location, decimating towns and enslaved those who survived the assault for the purpose of gold extraction. Two Glorian inventors who were part of the planet's development teams decided to strike back against the invading aliens by taking control of revolver-shaped fighter aircraft. [6] [7]

Development

Most of the enemies and bosses were hand-drawn sketches created by Senba before being transposed to pixel art graphics by Nagai. Gun Frontier art design.jpg
Most of the enemies and bosses were hand-drawn sketches created by Senba before being transposed to pixel art graphics by Nagai.

The creation of Gun Frontier was helmed by Takatsuna Senba, a former anime animator whose previous game development works at Taito included Battle Shark , Darius II and Master of Weapon , becoming his first original project under the role of both designer and producer. [5] [8] [9] [10] Deeming it as an "important mission" for him, Senba initially presented a game design document of more than 200 pages that took a month to prepare in order to get the project approved, but the executives at Taito rejected the proposal several times before it was eventually approved but with a lower budget than when it was originally pitched to the company. [10] Despite the low budget the project would be approved with, Senba and his team were tasked on creating a shoot 'em up game that featured a level of quality akin to an in-house project but with a budget that would have been taken to outsource it under a deadline, which could potentially laid the groundwork for future shoot 'em ups from Taito if the team were capable of performing such task, in addition to being one of the many titles made to promote the then-newly released Taito F2 System arcade hardware. [10] [11]

Members of the Gun Frontier development team, which was originally a small number of people, also worked previously on other Taito titles such as Cadash , with Senba and his crew wanting to push the F2 System hardware as much as they could but the project would go through a turbulent development cycle until it was released. [5] [8] [10] None of the members within the team had experience on designing a shoot 'em up project and the crew had yet to be familiarized with the F2 System to make the project a reality, while Senba was later tasked with working on Majestic Twelve: The Space Invaders Part IV . [10] Due to his experience with Darius II, Senba and the development crew were constantly struggling in getting the game as optimized as possible when creating graphics and sprites in order to not exceed the 64 kilobytes (65,536 bytes) memory limit, with members using calculators to constantly check if such limit was reached or not, while also slowly learning how to harness the F2 System's capabilities and keeping the budget below what Majestic Twelve originally cost to produce. [5] [10]

Senba also played a part in Gun Frontier's development as an artist and created the waterfall setpiece seen in the second stage, as he stated in a 2006 interview that this setpiece alone proved to be very difficult for him to implement in the game, since the management division at Taito were very persistent in having the scene featured and the project was on the verge of being put on hold for this. [10] As such, he worked under very high temperatures that threatened to wipe out data from the computers before overheating during summer, in addition to other tasks as well but the scene managed to be integrated and the project continued to move forward. [10] Hiroyasu Nagai also worked as an artist for the project as well. [8]

Despite suffering many setbacks, the game managed to meet the deadline and was eventually launched to the market. [10] After its release, Senba recounted about the creation process of the project in a 1991 interview with Japanese publication Micom BASIC Magazine where he revealed additional development information as well as various game ideas that were implemented. [5] He stated that the reason for adding an anti-autofire mechanism was due to the programmers' thought of how to make a project with adjustable difficulty on the fly, while also revealing the difficulty could also be increased by the number of enemies destroyed and other factors. [5] He also revealed that the team implemented bonus secrets in some of the stages as an internal response from two Taito employees who managed to one-credit clear the game for longevity reasons before launch. [5] The title is dedicated to F2 System hardware engineer Katsujiro Fujimoto, who died during development in a traffic accident. [8] [10]

Unlike other Taito productions and despite both Hisayoshi Ogura and Yasuhisa Watanabe being credited as sound directors in the staff roll of Gun Frontier, [8] the music was not composed by any member of Zuntata, instead the soundtrack was composed by subcontractor Hidetoshi Fukumori, who could not see the project in motion due to internal policies but the team would manage to let Fukumori test the game through an unconventional method of doing so. [10] In a 2006 interview, Senba stated that he was asked by a Taito composer as to why he relied on a subcontractor for the project's music and replied by saying that he felt no one would have created anything capable of matching his vision. [10]

Release

Gun Frontier was initially only launched for the arcades by Taito in 1990 across Japan, making an appearance on some trade shows for attendees to play. [12] [13] [14] The game was later ported to the Sega Saturn by GOO! and exclusively released in Japan on September 25, 1997, as volume 2 of the Arcade Gears series from Xing Entertainment. [15] This version features several notable changes such as the enemy placement, visual glitches, audio issues and a lower difficulty level overall, even on the highest difficulty setting. Programmer Toshiaki Fujino stated that developing the Saturn version proved to be troublesome, as he could not implement the hidden bonus secrets due to Taito not informing him about their existence. [16] However, the Saturn release improves the explosion animation seen after defeating a boss and the packaging includes a strategy guide from video game magazine Gamest . [4] In 2006, a nearly arcade perfect port was also included in the compilation Taito Legends 2 for Microsoft Windows, PlayStation 2 and Xbox. In August 2022, it was also available on the Arcade Archives lineup by Hamster Corporation for the Nintendo Switch and PlayStation 4.

Reception

Gun Frontier has been met with mixed critical reception from reviewers since its initial release in arcades and later on Saturn as part of volume 2 from the Arcade Gears series. [14] [24] In Japan, Game Machine listed the game on their February 15, 1991 issue as being the most-successful table arcade unit of the month. [25] In the April 1991 issue of Japanese publication Micom BASIC Magazine, the game was ranked on the number fifteen spot in popularity. [26] In a 2010 interview, composer Manabu Namiki regarded Gun Frontier as one of the shoot 'em up games he enjoys the most. [27]

Legacy

After the initial release of Gun Frontier in arcades, Senba and some members in the development team would later go on to create a horizontally scrolling shooter for Taito titled Metal Black, which was produced under the internal working title "Project Gun Frontier 2" but its actual connection to the original entry is loose at best. The science fiction third-person shooter PlayStation game Cosmo Warrior Zero features a fictional planet that bears a resemblance to Gloria as its main setting. In the 2010 self-published book by Cave, which chronicled their past and most recent works up to that point, Battle Garegga and Recca programmer Shinobu Yagawa regarded Gun Frontier as one of his favorite titles, with Yagawa revealing in a 2011 interview with Monthly Arcadia that he wanted to develop a game similar to it. [28] [29] A compilation album containing the soundtrack to the game as well as the soundtracks for Metal Black and Dino Rex was released in 2012. [30]

Notes

  1. Japanese: ガンフロンティア, Hepburn: Gan Furontia, also known as Gun & Frontier

Related Research Articles

<i>Darius Gaiden</i> 1994 arcade game

Darius Gaiden is a 1994 horizontal-scrolling shooter arcade game developed and published by Taito. The fifth entry in its Darius series, players control a starship named the Silver Hawk in its mission to destroy the Belsar empire before it wipes out the population of planet Darius. Gaiden adds several new features to the core concepts of its predecessors, including screen-clearing black hole bombs and the ability to capture mid-level bosses. The game has been ported to several consoles, including the Sega Saturn and PlayStation.

<i>Out Zone</i> 1990 video game

Out Zone is a run and gun arcade video game developed by Toaplan and published in Japan by Tecmo, North America by Romstar and Europe in August 1990. Set in a future where an alien race from the fictional planet Owagira are threatening to wipe out humanity after multiple failed attempts to defend Earth against their attacks, players assume the role of cyborg mercenaries recruited by the United Nations in a last-ditch effort to overthrow the invaders.

<i>Batsugun</i> 1993 video game

Batsugun is a 1993 vertically scrolling bullet hell arcade video game originally developed and published by Toaplan in Japan and Europe by Taito, as well as Korea by Unite Trading. The last shoot 'em up created by Toaplan, the title takes place on a distant Earth-like planet where a global takeover operative led by king Renoselva A. Gladebaran VII is set into motion, as players assume the role from one of the six fighter pilots conforming the Skull Hornets squadron taking control of submersible jets in a last-ditch effort to overthrow the invading military force from the planet. Its gameplay mainly consists of shooting mixed with role-playing game-esque elements using a main two-button configuration.

<i>R-Type Leo</i> 1992 video game

R-Type Leo is a 1992 horizontal-scrolling shooter arcade game developed by Nanao and published by Irem. It is a spin-off of the R-Type series and the last R-Type entry to be released in arcades. In Leo, players take control of the titular space fighter to travel the man-made mechanical planet Eden and destroy its supercomputer core Major. The game was initially conceived as an original shoot 'em up by Nanao before being retooled into an R-Type project by Irem. The title was met with positive reception from reviewers. It has since been re-released as part of Dotemu's 2010 Irem Arcade Hits compilation.

<i>Blood Bros.</i> 1990 arcade game

Blood Bros. is a 1990 arcade game developed and published by TAD Corporation in Japan and Europe, and later published in North America by Fabtek. It is a spiritual sequel to the 1988 game Cabal, with almost identical mechanics. A bootleg of Blood Bros. is known as West Story.

<i>Steel Gunner</i> 1990 first-person shooter arcade game

Steel Gunner is a 1990 first-person shooter arcade game developed and published by Namco. Players take control of Garcia and Cliff, a duo of police officers that are part of the Neo Arc police force, as they must use their powerful Gargoyle mecha suits to destroy the STURM terrorist organization, who have taken captive scientists Dr. Ryan and Dr. Ellis to create a world-ending superweapon. Gameplay revolves around using a crosshair to shoot down enemies and avoid harming civilians. It runs on the Namco System 2 Plus arcade hardware.

<i>A.B. Cop</i> 1990 video game

A.B. Cop is a futuristic 3D racing arcade game released by Sega in 1990. It never received any official port to home consoles.

<i>Carrier Air Wing</i> (video game) 1990 video game

Carrier Air Wing, released in Japan as U.S. Navy, is a 1990 side-scrolling shooting game released for the CP System arcade hardware by Capcom. It is the spiritual successor to U.N. Squadron, which was released in the previous year. As with the original, players chose any one of three different jet fighters and battle their way through ten enemy-packed stages. Other ideas carried over from U.N. Squadron include the shop, which allows players to buy weapon and shield upgrades for their jet fighter between stages, and the energy bar, which is replaced by a "fuel bar" which starts full at the start of each stage and decreases as time passes with some fuel lost each time the plane is damaged. The game has two different endings, depending on whether the game is finished with only one coin or not. A version for the Capcom Power System Changer was planned and previewed but never released.

<i>Detana!! TwinBee</i> 1991 video game

Detana!! TwinBee, released in Europe and North America as Bells & Whistles, is a 1991 vertically scrolling shooter arcade video game developed and released by Konami. It is the fifth entry in the TwinBee series and the second to be released for arcades following the original TwinBee. Set several years after the events of TwinBee, players assume the role of Light and Pastel taking control of TwinBee and WinBee to defeat invading forces of the evil alien Iva and save planet Meru after receiving an SOS message sent by Princess Melora.

<i>Xexex</i> 1991 video game

Xexex, released as Orius in North America, is a 1991 side-scrolling shoot 'em up arcade game by Konami. It draws on Irem's R-Type and Konami's other shoot 'em up Gradius, while adding the tentacle mechanics of Irem's other shoot 'em up XMultiply. In the game, players take control of the Flintlock space fighter in a mission to rescue Princess Irene La Tias of Planet E-Square, who has been captured by the evil galactic warlord Klaus Pachelbel.

<i>Varth: Operation Thunderstorm</i> 1992 video game

Varth: Operation Thunderstorm is an arcade game in the vertical scrolling shooter genre, published by Capcom in 1992. The game did not see a console port following its initial release, but 14 years later Digital Eclipse Software would port the game onto the PSP handheld, and later onto the PlayStation 2 and Xbox.

<i>Metal Black</i> (video game) 1991 video game

Metal Black is a 1991 scrolling shooter arcade video game originally developed and published by Taito. Set in the dystopian future of 2052, players assume the role of rogue pilot John Ford taking command of the CF-345 Black Fly space fighter craft to defeat the Nemesis alien race and save humanity.

<i>Liquid Kids</i> 1990 video game

Liquid Kids is a 1990 platform arcade video game developed and published by Taito. Starring the hippopotamus Hipopo, players travel through the land of Woody-Lake throwing water bombs, jumping on and off platforms to navigate level obstacles while dodging and defeating monsters in order to rescue Tamasun from her captor, the Fire Demon. The game was ported to the PC Engine and Sega Saturn. Home computer versions were in development but none were officially released to the public.

<i>Twin Hawk</i> 1989 video game

Twin Hawk is a 1989 vertically scrolling shooter arcade video game originally developed by Toaplan and published by Taito. Taking place at the end of an alternative World War II setting, where general Giovanni and his army plots to take over the fictional country Gorongo, players assume the role of a wing commander from the Daisenpū squadron taking control of a Flying Fortress fighter aircraft in an effort to overthrow the enemy.

<i>Truxton II</i> 1992 video game

Truxton II is a 1992 vertically scrolling shooter arcade video game originally developed and published by Toaplan in Japan and Europe. It is the sequel to Truxton, which was released earlier on arcades in 1988 and later ported to various platforms.

<i>Vimana</i> (video game) 1991 video game

Vimana is a vertically scrolling shooter arcade video game developed by Toaplan and published in Japan by Tecmo and Europe in June 1991. It is notable for being one of the few titles by Toaplan that has not received any official port to home consoles as of date and for its unique combination of science fiction with brief Hindu references. In the game, players assume the role of the titular warriors taking control of powerful ancient space fighter crafts in order to reclaim their home planet by fighting against military machines gone wild. The title received positive reception from critics and reviewers alike after release in regards to the gameplay, but was considered a flop in arcades. As of 2019, its rights are owned by Tatsujin, a company founded in 2017 by former Toaplan member Masahiro Yuge and now-affiliate of Japanese arcade manufacturer exA-Arcadia alongside many other Toaplan IPs.

<i>GunForce</i> 1991 Video game

GunForce is a side-scrolling run and gun video game produced by Irem for arcades in 1991. The game was ported by Bits Studios and published by Irem for the Super Nintendo Entertainment System in 1992. The sequel, GunForce II, was originally known in Japan as Geo Storm.

<i>Dino Rex</i> 1992 arcade video game

Dino Rex is a fighting arcade video game developed and originally released by Taito in Japan in November 1992. Set during the 25th century BC on a prehistoric South America, players assume the role of a warrior commanding his dinosaur companion as he enters a tournament held by the current titular king in order to become the next ruler while facing matches against other rivals. Its gameplay consists of one-on-one fights, with a main three-button configuration, featuring special moves and combo techniques.

<i>Dogyuun</i> 1992 Video game

Dogyuun is a 1992 vertically scrolling shooter arcade video game developed and published by Toaplan. Set on the colonized fictional planet of Dino in the future, where an alien race of metallic robots have invaded a police communication center and held its inhabitants as hostages, players assume the role of two fighter pilots taking control of the Sylfers bomber space fighter crafts in an revenge attempt to overthrow the invaders and free the surviving colonists after one of their comrades is killed by one of them during a reconnaissance assignment.

<i>FixEight</i> 1992 arcade video game

FixEight is a run and gun arcade video game developed and published by Toaplan in July 1992. The spiritual successor to 1990's Out Zone, it is notable for being one of the few titles by Toaplan that has not received any official port to home consoles as of date. Set in a future where an alien race known as the Gozzu from the fictional planet Fortuna invaded the universe, players are tasked by the Galactic Federation government with an extermination mission against the invaders by assuming the role of one of the eight mercenaries.

References

  1. 1 2 Yanma (February 1991). "NEW VIDEO GAMES - ガンフロンティア". Micom BASIC Magazine (in Japanese). No. 104. The Dempa Shimbunsha Corporation. pp. 225–226.
  2. "ガンフロンティア". Beep! MegaDrive (in Japanese). No. 19. SoftBank Creative. April 1991. p. 132.
  3. "Gun Frontier". Gamest (in Japanese). No. 56. Shinseisha. April 1991. pp. 54–57.
  4. 1 2 3 4 Kalata, Kurt (30 November 2013). "Gun Frontier". Hardcore Gaming 101. Archived from the original on 1 January 2014. Retrieved 5 July 2019.
  5. 1 2 3 4 5 6 7 Yanma (May 1991). "アーケード・ゲーム・ギャラリー - ~ガンフロンティア~". Micom BASIC (in Japanese). No. 107. Dempa Shimbunsha. pp. 298–299. (Translation by Shmuplations. Archived 2019-12-30 at the Wayback Machine ).
  6. Taito (1990). Gun Frontier (Arcade) (in Japanese). Taito. Level/area: Introduction.
  7. Labiner, Michael (March 1991). "Coin-Op". Amiga Joker (in German). No. 15. Joker-Verlag. pp. 106–107.
  8. 1 2 3 4 5 Taito (1990). Gun Frontier (Arcade) (in Japanese). Taito. Level/area: Credits.
  9. "仙波隆綱 -「メタルブラック」を作った男". Continue (in Japanese). Vol. 1. Ohta Publishing. June 2001. ISBN   978-4872335910. (Translation by Shmuplations. Archived 2022-07-23 at the Wayback Machine ).
  10. 1 2 3 4 5 6 7 8 9 10 11 12 Senba, Takatsuna (31 May 2006). "GUN&FRONTIER (c)TAITO" (in Japanese). T-1008 STUDIO. Archived from the original on 7 March 2015. Retrieved 9 July 2019. (Translation by Shmuplations. Archived 2019-12-30 at the Wayback Machine ).
  11. Senba, Takatsuna (4 November 2020). "ダライアス達の失敗(1)分岐". 仙波隆綱公式ブログ (in Japanese). FC2. Archived from the original on 20 November 2020. Retrieved 26 November 2020.
  12. Akagi, Masumi (13 October 2006). タイトー (Taito) (in Japanese) (1st ed.). Amusement News Agency. p. 44. ISBN   978-4990251215.{{cite book}}: |work= ignored (help)
  13. "Gun Frontier [European] (Arcade) - Overview". AllGame . All Media Network. 1998. Archived from the original on 14 November 2014. Retrieved 22 June 2019.
  14. 1 2 Gaksch, Martin; Lenhardt, Heinrich (April 1991). "Frankfurter Messe Rundschau". Power Play (in German). No. 37. Future Verlag. pp. 138–142.[ permanent dead link ]
  15. "セガサターン対応ソフトウェア(ライセンシー発売)- 1997年発売". SEGA HARD Encyclopedia (in Japanese). Sega. 2020. Archived from the original on 20 March 2020. Retrieved 14 May 2020.
  16. "『THE SHOOTING LOVE トゥエルブスタッグ&トライジール』". inhgroup.com (in Japanese). 20 April 2006. Archived from the original on 21 November 2018. Retrieved 1 November 2020.
  17. "ガンフロンティア / アーケードギアーズ (セガサターン) - ファミ通.com". Famitsu (in Japanese). No. 459. ASCII. 3 October 1997. p. 36. Retrieved 5 July 2019.
  18. Blendl, Christian (December 1997). "Overseas – Planet Saturn: Gun Frontier". MAN!AC (in German). No. 50. Cybermedia. p. 52.
  19. Wilson, David (February 1991). "Dosh Eaters - Gun Frontier". Zero . No. 16. Dennis Publishing. p. 52.
  20. 超絶 大技林 '98年春版: セガサターン - ガンフロンティア (Special) (in Japanese). Vol. 42. Tokuma Shoten Intermedia. 15 April 1998. p. 694. ASIN   B00J16900U.{{cite book}}: |work= ignored (help)
  21. "Now On Sale Saturn Soft Impression!! - ガンフロンティア/アーケードギアーズ". Saturn Fan (in Japanese). No. 19. Tokuma Shoten. 17 October 1997. p. 185.
  22. "Weekly Sega Saturn Soft Review - ガンフロンティア/アーケードギアーズ". Sega Saturn Magazine (in Japanese). No. 70. SoftBank Creative. 3 October 1997. p. 244.
  23. ザ・ベストゲーム2 - アーケードビデオゲーム26年の歴史: ゲーメスト大賞11年史 (in Japanese). Vol. 5 (4th ed.). Shinseisha. 17 January 1998. pp. 16–17. ISBN   9784881994290.{{cite book}}: |work= ignored (help)
  24. Yanma (April 1992). "発表!1991ビデオゲーム・グランプリ - ガンフロンティア (タイトー)". Micom BASIC Magazine (in Japanese). No. 118. Dempa Shimbunsha. pp. 284–285.
  25. "Game Machine's Best Hit Games 25 - テーブル型TVゲーム機 (Table Videos)". Game Machine (in Japanese). No. 397. Amusement Press, Inc. 15 February 1991. p. 25.
  26. Yanma (April 1991). "Super Soft Hot Information: Video Game! (ビデオゲーム) - Hot 20". Micom BASIC Magazine (in Japanese). No. 106. The Dempa Shimbunsha Corporation. p. 254.
  27. GERTRACK! (17 October 2010). "Geki On! > Shooting Game Music & Shooting Game Video ARCHIVE: 【ゲーム音楽】 ベイシスケイプ作曲家インタビュー". Shooting Gameside (in Japanese). Vol. 1. Micro Magazine. pp. 88–95. ISBN   978-4896373486. (Translation by Shmuplations. Archived 2019-09-14 at the Wayback Machine ).
  28. インタビュー - プログラマー: S. Yagawa (in Japanese). Cave. 24 August 2010. pp. 187–190.{{cite book}}: |work= ignored (help) (Translation by Shmuplations. Archived 2020-01-19 at the Wayback Machine ).
  29. "赤い刀 真". Monthly Arcadia (in Japanese). No. 139. Enterbrain. December 2011. p. 88.
  30. ""スーパースィープ"の12月新譜ゲームミュージックCD&イベント情報". Famitsu . Gzbrain. 19 December 2012. Archived from the original on 31 August 2017. Retrieved 7 July 2019.