Amiga is a family of personal computers introduced by Commodore in 1985. The original model is one of a number of mid-1980s computers with 16- or 16/32-bit processors, 256 KB or more of RAM, mouse-based GUIs, and significantly improved graphics and audio compared to previous 8-bit systems. These systems include the Atari ST—released earlier the same year—as well as the Macintosh and Acorn Archimedes. Based on the Motorola 68000 microprocessor, the Amiga differs from its contemporaries through the inclusion of custom hardware to accelerate graphics and sound, including sprites and a blitter, and a pre-emptive multitasking operating system called AmigaOS.
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.
Blood is a 3D first-person shooter video game developed by Monolith Productions and published by GT Interactive and developed using Ken Silverman’s Build engine. The shareware version was released for MS-DOS on March 7, 1997, while the full version was later released on May 21 in North America, and June 20 in Europe.
The Build Engine is a first-person shooter engine created by Ken Silverman, author of Ken's Labyrinth, for 3D Realms. Like the Doom engine, the Build Engine represents its world on a two-dimensional grid using closed 2D shapes called sectors, and uses simple flat objects called sprites to populate the world geometry with objects.
CDS Software was an independent publisher and developer of computer game software based in Doncaster, South Yorkshire, UK.
Gloom is a 1995 computer game for the Amiga computer. Gloom was the first commercially released Amiga clone of first-person shooter Doom.
Alien Breed 3D is a first-person shooter, the fourth game in Team17's Alien Breed franchise, a series of science fiction-themed shooters. It was published in 1995 by Ocean Software. It was followed by a sequel, Alien Breed 3D II: The Killing Grounds, in 1996.
An open-source video game, or simply an open-source game, is a video game whose source code is open-source. They are often freely distributable and sometimes cross-platform compatible.
Gloom 3 is a video game for the Amiga computer, released in 1997. Gloom 3 was the third proper, commercially released clone of the first-person shooter Doom in the Gloom series on the Amiga.
A game creation system (GCS) is a consumer-targeted game engine and a set of specialized design tools, and sometimes also a light scripting language, engineered for the rapid iteration of user-derived video games.
Unvanquished is a free and open-source video game. It is a multiplayer first-person shooter and real-time strategy game where Humans and Aliens fight for domination.
The Game Creators Ltd is a British software house based in Macclesfield, Cheshire, England, which specialises in software for video game development, originally for the Microsoft Windows platform. The company was established in March 1999 through a partnership between programmers Lee Bamber and Richard Vanner, who were joined by Meash Meakin in 2011 and Deborah Ascott-Jones in 2013.
Red Eclipse is an open-source first-person shooter that is forked from Cube 2: Sauerbraten. Like the original Cube 2, it features multiplayer gameplay as well as in-game level editing, but with improved graphics and a focus on parkour movement. The game is free and open-source software, released under the zlib license, and developed by an open community of contributors. Its content is free, and released under a CC BY-SA license.
Breathless is a first-person shooter released in 1995 for the Amiga 1200 developed by Fields of Vision and published by Power Computing. The game is set in a gladiatorial arena ran by alien overlords who have turned rebelling humans into cyborgs, featuring twenty levels that feature maps of varying height and the player seeking keycards or pressing switches to progress. Breathless received generally positive notices in the Amiga press, following several previews and demos being released. The game was later ported to the Amiga CD32 in 2014. The game's source code was released in 2017, leading to projects to port the game to modern PCs.
Fears is a first-person shooter released in 1995 for the Amiga 1200 developed by Bomb Software and published by Manyk. The game features thirty levels, and also included a built in level editor. Fears received average to positive notices in the Amiga press, following the release of previews and a demo, with retrospective reviews more critical. The game was reissued for a 25th Anniversary Edition in 2020.
Cytadela or Citadel is a 1995 first-person shooter developed by Virtual Design and published by Black Legend and Arrakis Software for the Amiga 500 and later. The game is set on a prison island in the middle of a prisoner revolt. The game received generally positive reviews in the Amiga press. An open-source version for modern PCs was started in 2006. A fixed up version for the original Amiga was announced in 2021, with a full release in 2022. The source code to the original was also released.
