Quake engineThe Quake engine is the game engine developed by id Software to power their 1996 video game Quake. It featured true 3D real-time rendering and is now licensed under the terms of GNU General Public License v2.0 or later. After release, the Quake engine immediately forked. Much of the engine remained in Quake II and Quake III Arena. The Quake engine, like the Doom engine, used binary space partitioning (BSP) to optimise the world rendering. The Quake engine also used Gouraud shading for moving objects, and a static lightmap for non-moving objects.
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.
Id Tech 3id Tech 3, popularly known as the Quake III Arena engine''', is a game engine developed by id Software for their video game Quake III Arena. It has been adopted by numerous games. During its time, it competed with the Unreal Engine; both engines were widely licensed. While id Tech 3 is based on id Tech 2 engine, a large amount of the code was rewritten. Successor id Tech 4 was derived from id Tech 3, as was Infinity Ward's IW engine used in Call of Duty 2 onwards.
Binary space partitioningIn computer science, binary space partitioning (BSP) is a method for space partitioning which recursively subdivides a Euclidean space into two convex sets by using hyperplanes as partitions. This process of subdividing gives rise to a representation of objects within the space in the form of a tree data structure known as a BSP tree. Binary space partitioning was developed in the context of 3D computer graphics in 1969.
Doom engineid Tech 1, also known as the Doom engine, is the game engine used in the id Software video games Doom and Doom II: Hell on Earth. It is also used in Heretic, Hexen: Beyond Heretic, Strife: Quest for the Sigil, Hacx: Twitch 'n Kill, Freedoom, and other games produced by licensees. It was created by John Carmack, with auxiliary functions written by Mike Abrash, John Romero, Dave Taylor, and Paul Radek. Originally developed on NeXT computers, it was ported to MS-DOS and compatible operating systems for Doom's initial release and was later ported to several game consoles and operating systems.
Build (game engine)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. The Build Engine is generally considered to be a 2.5D engine, as the basic world geometry is two-dimensional with an added height component, allowing each sector to have a different ceiling height and floor height.
GoldSrcGoldSrc (pronounced "gold source"), sometimes called the Half-Life Engine, is a proprietary game engine developed by Valve. At its core, GoldSrc is a heavily modified version of id Software's Quake engine. It originally made its debut in 1998 with Half-Life, and would power future games developed by or with oversight from Valve, including Half-Life expansions, Day of Defeat, and multiple games in the Counter-Strike series. GoldSrc was succeeded by the Source engine with the releases of Half-Life: Source, Half-Life 2, and Counter-Strike: Source in 2004.
Game engineA game engine is a software framework primarily designed for the development of video games and generally includes relevant libraries and support programs such as a level editor. The "engine" terminology is similar to the term "software engine" used in the software industry. The game engine can also refer to the development software utilizing this framework, typically offering a suite of tools and features for developing games. Developers can use game engines to construct games for video game consoles and other types of computers.
Half-Life 2Half-Life 2 is a 2004 first-person shooter (FPS) game developed by Valve. It was first published by Valve for Windows through its distribution service Steam. Like the original Half-Life (1998), Half-Life 2 combines shooting, puzzles, and storytelling, and adds features such as vehicles and physics-based gameplay. Players control Gordon Freeman as he joins a resistance movement to liberate the Earth from the control of a multidimensional alien empire, the Combine. Half-Life 2 was created using Valve's Source engine, which was developed at the same time.