A multi core friendly rigid body physics and collision detection lib
Cocos simplifies game creation and distribution with Cocos Creator
Cross-platform 2D and 3D game engine with modular architecture
JavaScript-based game engine designed to empower developers
Multi-platform 2D and 3D game engine
A game engine with an emphasis on real-time cutting-edge solutions
Fast and lightweight JavaScript game engine built on WebGL and glTF
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
A high-performance, industry-standard 2D physics engine built on Box2D
A 2D rigid body physics engine for the web
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
2D JavaScript Physics Engine
Descent 3 by Outrage Entertainment
A completely free, open-source, 2D game engine
A modular Common Lisp game engine
The Tiny JavaScript Game Engine That Can!
An easy to use 2D HTML5 game engine written in TypeScript
Stride (formerly Xenko), a free and open-source cross-platform C# game
Ct.js is a desktop game engine that makes learning programming fun
A free 3D game engine to create games and realtimes scenes for Windows
Game framework with AI
Haskell game engine library for roguelike dungeon crawlers
Rust library to create a Good Game Easily
MIT Licensed Open Source version of Torque3D from GarageGames
Spring is a free RTS engine developed for Windows, Linux and Mac OS X.