Odamex is a free, cross-platform, modern client-server Doom engine
0 A.D. is a free, open-source, cross-platform real-time strategy game.
Combat Flight Simulator for LINUX. WW2. Network and VOIP. Open-source.
Cross-platform real-time strategy game (3D)
An unmodified version of the MMORPG Impressive Title by KovuLKD
A fun realistic multiplayer free-and-open-source first-person-shooter!
C/C++ , PHP, PYTHON, 3D ENGINES, CHROME NATIVE CLIENT
3D Space Station Simulator (inspired by SS13)
PvP, MUD RPG.
Clone of Urban Assault with new Graphics.
Your death sentence awaits...
Free 3D Roguelike action RPG
3D FPS Digital Paintball 3 Multiplayer Online Game
Online music hits, forum, chat and fps games
Piccoli giochi crescono ^^
A 3D multiplayer RPG based in the world of Khoras.