A world editor for HGE game engine written in python and uses OpenGL.
Revolt Import-Export addon for Blender
A graphics engine + toolkit.
Donation system for source-based communities
Cross platform 2D game creation framework with Python bindings
Open source, moddable game engine for the "Polygon Love 2" game
Tactical, turn-based game engine, that uses OpenGL and WinAPI
A Wargame
Access to Irrlicht Engine SDK from assembler, C, Python, Basic, Pascal
Open Source Virtual World and MMOG Development Platform
A Dungeons & Dragons Miniature Game.
Visual Novel game
Browser game engine
Game framework on top of Python, Panda3D and Twisted
A medieval adventure game being developed in Blender
The Lambda-Engine is a cross platform game engine.