Arianne is an engine to develop multiplayer online games like Stendhal
C/C++ , PHP, PYTHON, 3D ENGINES, CHROME NATIVE CLIENT
The second demo of my game engine.
Pygrid is an open-source and cross-platform pygame/python 2D engine.
A world editor for HGE game engine written in python and uses OpenGL.
A graphics engine + toolkit.
Open Source Virtual World and MMOG Development Platform
The Lambda-Engine is a cross platform game engine.
Game framework on top of Python, Panda3D and Twisted
Make games with Lego-like building blocks
A powerful cross-platform and open-source 3-D rendering engine.