Voxel game engine in C++ with OpenGL
One framework for creating powerful cross-platform games
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
3D slider puzzles for kids; helps teach solid geometry
A public domain cross platform 3D game
Multimedia asset management and manipulator for Étoilé
Game development toolkit
An open source skateboard games engine written in C# and .NET.
a realtime graphics library
The Lambda-Engine is a cross platform game engine.