Kinect based controller.
3D Interactive sandbox environment
A 3D, fully concurrent game engine
A game development kit for Sifteo Cubes.
A retro style video game engine for RPGs and adventure games.
2D Game Engine, based on OpenGL and focused on Isometric Games
Extremely simple joystick rumble / vibration library
3D game engine for C and C++
3D world editor for game development
Convert Ren'Py visual novels into a format your ebook-reader knows
A very small multi-platform game engine for creating desktop games.
3D Web UI, Embed Web and Flash in 3D Games, based on WebKit
Pear3DEngine is a modern and modular 3D development framework
Phobos editor is a generic resource editing system.
An open source C++ console based game (Windows only).
C++ Game programming Framework