Doom is a first-person shooter game developed and published by id Software. Released on December 10, 1993, for DOS, it is the first installment in the Doom franchise. The player assumes the role of a space marine, later unofficially referred to as Doomguy, fighting through hordes of undead humans and invading demons. The game begins on the moons of Mars and finishes in hell, with the player traversing each level to find its exit or defeat its final boss. It is an early example of 3D graphics in video games, and has enemies and objects as 2D images, a technique sometimes referred to as 2.5D graphics.
Heretic is a dark fantasy first-person shooter video game released in December 1994. It was developed by Raven Software and published by id Software through GT Interactive.
Hexen: Beyond Heretic is a fantasy first-person shooter video game developed by Raven Software and published by id Software distributed through GT Interactive on October 30, 1995. It is the sequel to 1994's Heretic, and the second game in Raven Software's "Serpent Riders" trilogy, which culminated with Hexen II. The title comes from the German noun Hexen, which means "witches", and/or the verb hexen, which means "to cast a spell". Game producer John Romero stated that a third, unreleased game in this series was to be called Hecatomb.
id Software LLC is an American video game developer based in Richardson, Texas. It was founded on February 1, 1991, by four members of the computer company Softdisk: programmers John Carmack and John Romero, game designer Tom Hall, and artist Adrian Carmack.
Quake is a first-person shooter game developed by id Software and published by GT Interactive. The first game in the Quake series, it was originally released for MS-DOS, Microsoft Windows, and Linux in 1996, followed by Mac OS and Sega Saturn in 1997 and Nintendo 64 in 1998.
Wolfenstein 3D is a first-person shooter video game developed by id Software and published by Apogee Software and FormGen. Originally released on May 5, 1992, for DOS, it was inspired by the 1981 Muse Software video game Castle Wolfenstein, and is the third installment in the Wolfenstein series. In Wolfenstein 3D, the player assumes the role of Allied spy William "B.J." Blazkowicz during World War II as he escapes from the Nazi German prison Castle Wolfenstein and carries out a series of crucial missions against the Nazis. The player traverses each of the game's levels to find an elevator to the next level or kill a final boss, fighting Nazi soldiers, dogs, and other enemies with a knife and a variety of guns.
Commander Keen is a series of side-scrolling platform video games developed primarily by id Software. The series consists of six main episodes, a "lost" episode, and a final game; all but the final game were released for MS-DOS in 1990 and 1991, while the 2001 Commander Keen was released for the Game Boy Color. The series follows the eponymous Commander Keen, the secret identity of the eight-year-old genius Billy Blaze, as he defends the Earth and the galaxy from alien threats with his homemade spaceship, rayguns, and pogo stick. The first three episodes were developed by Ideas from the Deep, the precursor to id, and published by Apogee Software as the shareware title Commander Keen in Invasion of the Vorticons; the "lost" episode 3.5 Commander Keen in Keen Dreams was developed by id and published as a retail title by Softdisk; episodes four and five were released by Apogee as the shareware Commander Keen in Goodbye, Galaxy; and the simultaneously developed episode six was published in retail by FormGen as Commander Keen in Aliens Ate My Babysitter. Ten years later, an homage and sequel to the series was developed by David A. Palmer Productions and published by Activision as Commander Keen. Another game was announced in 2019 as under development by ZeniMax Online Studios, but was not released.
Hovertank One, also known under a variety of other names, is a vehicular combat game developed by id Software and published by Softdisk in April 1991.
Catacomb 3-D is a first-person shooter video game, the third in the Catacomb series, the first of which to feature 3D computer graphics. It was developed by id Software and originally published by Softdisk under the Gamer's Edge label, released in November 1991. The player takes control of the high wizard Petton Everhail, descending into the catacombs of the Towne Cemetery to defeat the evil lich Nemesis and rescue his friend Grelminar.
A source port is a software project based on the source code of a game engine that allows the game to be played on operating systems or computing platforms with which the game was not originally compatible.
Free look describes the ability to move a mouse, joystick, analogue stick, or D-pad to rotate the player character's view in video games. It is almost always used for 3D game engines, and has been included on role-playing video games, real-time strategy games, third-person shooters, first-person shooters, racing games, and flight simulators. Free look is nearly universal in modern games, but it was one of the significant technical breakthroughs of mid-1990s first-person perspective games. Many modern console games dedicate one of the several analogue sticks on the gamepad entirely to rotating the view, where as some older console games, when gamepads usually had fewer or only a single D-pad or analogue stick, had a feature where the single D-pad or analogue stick would move the view instead of the character whilst the player held down another button at the same time, often labelled in game as the "look button".
Softdisk was a software and Internet company based in Shreveport, Louisiana. Founded in 1981, its original products were disk magazines. It was affiliated and partly owned by paper magazine Softalk at founding, but survived its demise.
ShadowCaster is a first-person role-playing video game developed by Raven Software. It was published in 1993 by Origin Systems after Electronic Arts acquired them. A CD-ROM version was released in 1994, featuring two additional levels with new monsters, and replacing text boxes with FMVs and spoken narration through CD-DA audio tracks.
Catacomb Abyss is a fantasy themed first-person shooter (FPS) game developed by Softdisk and released in November 1992 for DOS. It is the fourth entry in the Catacomb series of video games. Its predecessor, Catacomb 3-D, was developed by id Software as part of a contract with Softdisk. When the contract ended, Softdisk kept ownership of both the 3D engine as well as the intellectual property of Catacomb 3-D. The company formed a new, in-house team to develop three sequels, known as the Catacomb Adventure Series. This trilogy consists of Catacomb Abyss, Catacomb Armageddon and Catacomb Apocalypse. Softdisk published a shareware version of Catacomb Abyss, which could be freely distributed and played to encourage gamers to purchase the full trilogy.
id Tech is a series of separate game engines designed and developed by id Software. Prior to the presentation of the id Tech 5-based game Rage in 2011, the engines lacked official designation and as such were simply referred to as the Doom and Quake engines, from the name of the main game series the engines had been developed for. "id Tech" has been released as free software under the GNU General Public License. id Tech versions 0 to 3 were released under GPL-2.0-or-later. id Tech versions 3.5 to 4.5 were released under GPL-3.0-or-later. id Tech 5 to 7 are proprietary, with id Tech 7 currently being the latest utilized engine.
Catacomb is a 2-D top-down third-person shooter developed and published by Softdisk. It was originally created for the Apple II, and later ported to IBM PC compatibles. It supports EGA and CGA graphics. Catacomb is programmed by John Carmack, who would later work on successful games such as Wolfenstein 3D and Doom. The fast action and the ability to strafe in Catacomb foreshadow Carmack's later work. The enemy movement code in Wolfenstein 3D is based on code from Catacomb.
Commander Keen in Keen Dreams is a side-scrolling platform video game developed by id Software and published by Softdisk in 1991 for DOS. It is the fourth episode of the Commander Keen series. The game follows the titular Commander Keen, an eight-year-old child genius, in an adventure in his dreams as he journeys through a vegetable kingdom to defeat the evil potato king Boobus Tuber and free enslaved children from the Dream machine. The game features Keen running and jumping through various levels while opposed by various vegetable enemies; unlike the prior three episodes, Keen does not use a pogo stick to jump higher, and throws flower power pellets to temporarily turn enemies into flowers rather than shooting a raygun to kill them.
A first-person shooter (FPS) is a video game centered on gun fighting and other weapon-based combat seen from a first-person perspective, with the player experiencing the action directly through the eyes of the main character. This genre shares multiple common traits with other shooter games, and in turn falls under the action games category. Since the genre's inception, advanced 3D and pseudo-3D graphics have proven fundamental to allow a reasonable level of immersion in the game world, and this type of game helped pushing technology progressively further, challenging hardware developers worldwide to introduce numerous innovations in the field of graphics processing units. Multiplayer gaming has been an integral part of the experience, and became even more prominent with the diffusion of internet connectivity in recent years.
Commander Keen in Invasion of the Vorticons is a three-part episodic side-scrolling platform video game developed by Ideas from the Deep and published by Apogee Software in 1990 for MS-DOS. It is the first set of episodes of the Commander Keen series. The game follows the titular Commander Keen, an eight-year-old child genius, as he retrieves the stolen parts of his spaceship from the cities of Mars, prevents a recently arrived alien mothership from destroying landmarks on Earth, and hunts down the leader of the aliens, the Grand Intellect, on the alien home planet. The three episodes feature Keen running, jumping, and shooting through various levels while opposed by aliens, robots, and other hazards.
