A cross-platform port of Hexen II game.
A free 3d game for PC that does not limit the player. Fight,Build,Gain
Ms Dos port with slopes 3d floors true3d demo compatibility fast speed
DOOM / Heretic / Hexen source port with enhanced graphics and UI
A Marathon (first-person shooter) engine with enhanced features
Quake C mods and support - SSQC / CSQC
Advanced Wasteland mission using ACE for Arma II
Cross platform administration tool for Source Engine dedicated servers
GraphOX is awesome
Nexuiz-Xonotic Client
A fork resurrecting NewWolf (Wolfenstein 3D for OpenGL on Windows)
Reference implementation for the Doom game engine.
A second breath of life for Wolfenstein: Enemy Territory