The Tiny JavaScript Game Engine That Can!
JavaScript-based game engine designed to empower developers
A retro game engine for Python
A dead simple 2D game engine for Go
Cross-platform game engine in Rust
Free, open source game engine online
Full featured MUD server with all the trimmings.
The multiplayer game engine
State Management and Multiplayer Networking for Turn-Based Games
Retro game engine for creating games like it's 1997
Javascript library for making tile based games
3D playground built on three.js and cannon.js
A cross-platform 2D game engine
online 4X browser game engine
Godot is a fully featured, open source, MIT licensed, game engine.
Educational framework for OpenGLES, OpenCL and OpenAL
Java Client + JS/Canvas Server-Side System, with maintained Objects
Cross-platform 2D game engine
Free MMORPG Engine. Develop and host graphical browser-based games.