Odamex is a free, cross-platform, modern client-server Doom engine
Superproject containing build scripts and tools to download assets
Multi scripts for CS:GO that do just about everything
Computer-assisted miniature tank game.
Fly, bomb, shoot sh*t.
Mighty 34th century meka action from TeamXbow
A minecraft clone thing on the cube 2 engine
A multiplayer First-Person-Shooter game built in Java 3D