* AssaultCube is a first-person shooter
* Battle for Wesnoth is a turn-based strategy game
* Blob Wars: Metal Blob Solid is a 2D platform game
* Blob Wars: Blob And Conquer is a 3D action shooter / platformer and direct sequel to Metal Blob Solid
* BZFlag is a 3D First person tank shooter (With jumping)
* CodeRED: Alien Arena is a sci-fi first-person shooter derived from the Quake II engine
* Glest is a real-time strategy game, with optional multiplayer
* NetHack and Angband are text-based computer role-playing games
* Nexuiz is a first-person shooter
* OpenArena is a standalone Quake III Arena game
* Project: Starfighter a multi-directional, objective based shoot-em-up
* Sauerbraten is a 3D first-person shooter with an integrated map editing mode
* TORCS (The Open Racing Car Simulator) - considered one of the best open-source racing simulators, with realistic graphics and vehicle handling.[2]
* Tremulous is a 3D first-person shooter/real-time strategy game
* Tux Racer is a 3D racing game featuring Tux
* Urban Terror is a standalone Quake III Arena first-person shooter
* Vega Strike is a space flight simulation
* War§ow is a Quake-like, fast-paced first-person shooter