Cooperative video gameA cooperative video game, often abbreviated as co-op, is a video game that allows players to work together as teammates, usually against one or more non-player character opponents (PvE). Co-op games can be played locally using one or multiple input controllers or over a network via local area networks, wide area networks, or the internet. Co-op gameplay has gained popularity as controller and networking technology has developed.
DaikatanaDaikatana is a first-person shooter game developed by Ion Storm. It was published by Eidos Interactive and for Windows and Kemco for Nintendo 64. Players control a swordsmaster who travels through various time periods in an effort to obtain the eponymous Daikatana, a powerful sword tied to the fate of the world. Daikatana was directed by Ion Storm co-founder John Romero, a co-developer of the influential first-person shooters Wolfenstein 3D (1992), Doom (1993), and Quake (1996).
Unofficial patchAn unofficial patch is a patch for a piece of software, created by a third party such as a user community without the involvement of the original developer. Similar to an ordinary patch, it alleviates bugs or shortcomings. Unofficial patches do not usually change the intended usage of the software, in contrast to other third-party software adaptions such as mods or cracks. A common motivation for the creation of unofficial patches is missing technical support by the original software developer or provider.
Valve CorporationValve Corporation, also known as Valve Software, is an American video game developer, publisher, and digital distribution company headquartered in Bellevue, Washington. It is the developer of the software distribution platform Steam and the franchises Half-Life, Counter-Strike, Portal, Day of Defeat, Team Fortress, Left 4 Dead, and Dota. Valve was founded in 1996 by former Microsoft employees Gabe Newell and Mike Harrington.
GameSpyGameSpy was an American provider of online multiplayer and matchmaking middleware for video games founded in 1999 by Mark Surfas. After the release of a multiplayer server browser for the game, QSpy, Surfas licensed the software under the GameSpy brand to other video game publishers through a newly established company, GameSpy Industries, which also incorporated his Planet Network of video game news and information websites, and GameSpy.com.
Doom (2016 video game)Doom is a 2016 first-person shooter game developed by id Software and published by Bethesda Softworks. It is the first major installment in the Doom series since 2004's Doom 3. Players take the role of an unnamed space marine, known as the "Doom Slayer", as he battles demonic forces from Hell that have been unleashed by the Union Aerospace Corporation within their energy-mining facility on Mars. The gameplay returns to a faster pace with more open-ended levels, closer to the first two games than the slower survival horror approach of Doom 3.
Id Tech 4id Tech 4, popularly known as the Doom 3 engine, is a game engine developed by id Software and first used in the video game Doom 3. The engine was designed by John Carmack, who also created previous game engines, such as those for Doom and Quake, which are widely recognized as significant advances in the field. This OpenGL-based game engine has also been used in Quake 4, Prey, Enemy Territory: Quake Wars, Wolfenstein, and Brink. id Tech 4 is licensed under the terms of the GNU General Public License v3.
Source portA 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. Source ports are often created by fans after the original developer hands over the maintenance support for a game by releasing its source code to the public (see List of commercial video games with later released source code). The term was coined after the release of the source code to Doom.
Id Techid 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.
First-person shooter engineA first-person shooter engine is a video game engine specialized for simulating 3D environments for use in a first-person shooter video game. First-person refers to the view where the players see the world from the eyes of their characters. Shooter refers to games which revolve primarily around wielding firearms and killing other entities in the game world, either non-player characters or other players. The development of the FPS graphic engines is characterized by a steady increase in technologies, with some breakthroughs.
