A 2D rigid body physics engine for the web
A retro game engine for Python
Fast and lightweight JavaScript game engine built on WebGL and glTF
A high-performance, industry-standard 2D physics engine built on Box2D
2D JavaScript Physics Engine
Python MUD/MUX/MUSH/MU* development system
Free, open source game engine online
Game engine supporting many 3D/2D formats and graphic effects
A space race game in the style of A Dark Room
online 4X browser game engine
Turbulenz is a modular 3D and 2D game framework
Game engine supporting many 3D/2D formats and graphic effects
Free MMORPG Engine. Develop and host graphical browser-based games.