First-person shooters

“Previously referred to as the "DOOM 3 Engine", id Tech 4 is our current technology licensing platform. Used by such titles as DOOM 3, QUAKE 4, Prey and Enemy Territory: QUAKE Wars, as well as the next Wolfenstein title, id Tech 4 revolutionized the use of real-time dynamic lighting, while the new MegaTexture code offers previously unprecedented terrain detail. Each license includes full source and tools for DOOM 3, QUAKE 4 and Enemy Territory: QUAKE Wars (beta).”

Crymod is a platform for users to share and exchange modification tools, techniques, and game source code to help make mods to the game engine that supports Warhead and Crysis War.

“Welcome to the UT3 Mod Community section of UDN, with all the details you need to become an expert with the award-winning Unreal Technology for UT3.”

“Formerly the "QUAKE 2 Engine", with pioneering innovation in 3D environments, a few of id Tech 2's most notable features were out-of-the-box support for OpenGL hardware-accelerated graphics (in addition to the traditional software renderer), and colored lighting effects. Games created on this engine technology include QUAKE II, Hexen II, Heretic II, Sin, Soldier Of Fortune, Half-Life, Kingpin and Anachronox.”

“Previously called the "QUAKE 3 Engine" and one of the most successful licensed engines in history, id Tech 3 includes QUAKE III Arena and QUAKE III: Team Arena source bases, and was the engine used to create Return to Castle Wolfenstein, Soldier of Fortune II: Double Helix and Star Trek: Voyager - Elite Force, among others. id Tech 3 introduced shaders, curved surfaces, 32-bit color, special effects, bleeding-edge networking and super-smooth speedy hardware rendering.”

“Valve's Source engine technology--the same used to power Half-Life 2, Team Fortress 2, and Portal--is available for license to any game developer. Source is widely recognized as the most flexible, comprehensive, and powerful game development environment available. Source combines leading-edge character animation, advanced AI, real-world physics, shader-based rendering, and a highly extensible development environment to produce some of the most popular computer and console games.”

“Unreal Engine 3 is a complete development framework for DirectX 10-equipped PCs, Xbox 360® and PLAYSTATION®3, providing the vast array of core technologies, content creation tools, and support infrastructure required by top game studios, advanced visualization and simulation developers and creators of linear 3D animated content.”