31 Mar 2016)
Radix is a free and open source game engine in development.
Unity is a flexible and powerful development platform for creating multiplatform 3D and 2D games and interactive experiences.
The Torque Game Engine, or TGE, is a computer game engine originally developed by Dynamix for the 2001 first-person shooter Tribes 2.
Arx Libertatis is a source port based on the publicly released Arx Fatalis source code.Genre: Role-playing, Action
id 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.Genre: Action
The Doom engine, also known as id Tech 1, is the game engine that powers the id Software games Doom and Doom II: Hell on Earth.Genre: Action
The Quake engine is the game engine developed by id Software to power their 1996 video game Quake.
id Tech 2, popularly known as the Quake II engine, is a game engine developed by id Software for use in their games, most notably Quake II.
Layers of Fear is a first-person psychedelic horror game with a heavy focus on story and exploration.Genre: Adventure
Iris 2.0 is a cross-platform open-source 2D/3D client for playing the MMORPG Ultima Online on FreeshardsGenre: Role-playing
OpenTomb is a cross-platform reimplementation of classic Tomb Raider 1—5 engines that were developed by now defunct Core Design.