A game engine powered by python and panda3d
3D Procedural Game Engine Using OpenGL
Free, open source game engine online
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
PyCAPGE - Python Classic Adventure Point and Click Game Engine
Entitas is a super fast Entity Component System (ECS) Framework
KlayGE is a cross-platform open source game engine
Open source, moddable game engine for the "Polygon Love 2" game