Odamex is a free, cross-platform, modern client-server Doom engine
Combat Flight Simulator for LINUX. WW2. Network and VOIP. Open-source.
Cooperative multiplayer graphical RPG and adventure game
0 A.D. is a free, open-source, cross-platform real-time strategy game.
A free 3d game for PC that does not limit the player. Fight,Build,Gain
Dynamic IP retrieval to report to Crossfire Metaserver
Crossfire RPG Game Weather Patch -- Now a branch on the official repo!
mGSTEP port of the Cube game engine
QuakeWorld client ported to OS/2
Clone of Urban Assault with new Graphics.
OpenKore is an automation tool for Ragnarok Online
A Kingpin Mod - Blood Money 616
A 2D Platformer Shooter game
Viewer for Second Life and OpenSim virtual worlds