Get as many FPS as you need and amazing effects by rendering HTML/CSS
Read and run Cryptic Studios games .demo files
3D tree generator
action/combat flight sim
A cross-platform game framework based on OpenGL and GObject.
A program that can be used to generate normal maps from images .
Pear3DEngine is a modern and modular 3D development framework
Real-time 3D visualization of space
https://github.com/horde3d/Horde3D
Multi-Language Wrapper Collection for the Irrlicht Engine
Game engine supporting many 3D/2D formats and graphic effects