Multi-Language Wrapper Collection for the Irrlicht Engine
Formerly CraveJs, it's for creating JavaScript applications and games.
AS3 Utilities library (Games Development Framework)
A cross-platform OpenGL based lightweight scenegraph library
Simple Point & Click Game
Cross-platform 2D game engine
Game framework on top of Python, Panda3D and Twisted
AMOS BASIC reimplementation in Java
Tween for Torque
A cross platform 3d c++ game engine
The Lambda-Engine is a cross platform game engine.
Zap Engine
Make games with Lego-like building blocks