Open source voxel world
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.
A free 3d game for PC that does not limit the player. Fight,Build,Gain
Cross-platform real-time strategy game (3D)
Free and open source Avatar Webgame made by Vietnam
A fun realistic multiplayer free-and-open-source first-person-shooter!
Free MMORPG
Free Minecraft Servers tweaked for a lag-free experience!
A massively multiplayer tank battle game.
a PHP based leaderboard software for Battlefield 4
a PHP based leaderboard software for Battlefield Hardline
Free strategy browsergame engine.
a PHP based leaderboard for World of Tanks and World of Warplanes
Free 3D Roguelike action RPG
Action-packed local multiplayer game
Fly, bomb, shoot sh*t.
Earthlead is a free massive multiplayer online browser strategy game.
A Plugin for the Bukkit Server Wrapper system that messes with people!