Doom-based AI research platform for reinforcement learning
3D modeler, 3D game maker, 3D demo maker
Odamex is a free, cross-platform, modern client-server Doom engine
A free 3d game for PC that does not limit the player. Fight,Build,Gain
A development environment focused on modding
a 3D openGL sandbox virtual beach seashore forest ocean game
a free hack & slash action 2D/3D rogue / ultima / dungeon like game
ZED OS the clone of Windows XP
Source code of the chapters of the book 3D Game Development with LWJGL
486 lines of C++: old-school FPS in a weekend
Fly around an island casting spells, summon monsters, collect mana, a
Open source first/third person shooter set in real world locations
Make edit and convert your 3D models to a game maker friendly format.
XNA based game engine completely written in c#