The Ren'Py Visual Novel Engine
A game engine powered by python and panda3d
A retro game engine for Python
Open source clone of the Age of Empires II engine
Powerful, mature open-source cross-platform game engine for Python
Fast and lightweight JavaScript game engine built on WebGL and glTF
3D game engine/framework in C, with Luajit and Python bindings now
An OpenGL RTS game engine written in C
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Zig game engine & graphics toolkit
PyCAPGE - Python Classic Adventure Point and Click Game Engine
GemRB is a portable open-source implementation of the Infinity Engine
Cross-platform 2D game engine (+ full OpenGL, +full OpenGL ES )
A cell-based puzzle game featuring classic and completely new puzzles
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 cross-platform 2D game engine
2D physics engine for games
TurboSphere is an easy to learn and powerful JS based game engine.