The Ren'Py Visual Novel Engine
A game engine powered by python and panda3d
Open source clone of the Age of Empires II engine
A retro game engine for Python
3D game engine/framework in C, with Luajit and Python bindings now
Powerful, mature open-source cross-platform game engine for Python
An OpenGL RTS game engine written in C
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
GemRB is a portable open-source implementation of the Infinity Engine
A cell-based puzzle game featuring classic and completely new puzzles
The world is no longer the same
Pycraft is an open-source, OpenGL based game made in Python
PyCAPGE - Python Classic Adventure Point and Click Game Engine
Free, open source game engine online
A game engine for console based text games
Python ctypes module for the Irrlicht Engine SDK
DOOM / Heretic / Hexen source port with enhanced graphics and UI
KlayGE is a cross-platform open source game engine
A mobile game distributed server implemented using netty4.X
Game engine allows you to create own MMORPG
A 3D game engine in java.