0 A.D. is a free, open-source, cross-platform real-time strategy game.
Open source FPS/RTS Game
Mech Station Beta - Tower Defense like Game
online 4X browser game engine
Science Fiction, heavy assault, disestablishment of power.
A 2D Elite-style game written in Python 3.2.
A multiplayer First-Person-Shooter game built in Java 3D
A game developed by Reddit community
The SCND Genesis: Legends
A simulation of modern tactical naval warfare.