Godot is a powerful cross-platform game engine
Fast and lightweight JavaScript game engine built on WebGL and glTF
Solar2D Game Engine main repository (ex Corona SDK)
Real Time Strategy game engine supporting early Westwood classics
A complete 3-D game development suite written in Java
The HTML5 Creation Engine
A modular Common Lisp game engine
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
Stride (formerly Xenko), a free and open-source cross-platform C# game
3D game engine/framework in C, with Luajit and Python bindings now
A game engine powered by python and panda3d
A game framework written with osu! in mind.
Cross-platform 2D and 3D game engine with modular architecture
The game engine for everyone
Recreation of the classic Grand Theft Auto III game executable
Powerful, mature open-source cross-platform game engine for Python
Free game engine for development of desktop, mobile, and web games
Ct.js is a desktop game engine that makes learning programming fun
A refreshingly simple data-driven game engine built in Rust
Open source library for creative expression on the web, desktop, etc.
Multi-platform 2D and 3D game engine
LayaAir is an open-source 2D/3D engine
A retro game engine for Python
A 2D rigid body physics engine for the web
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D