Xash3D FWGS engine
Voxel game-creation platform with easy modding and game creation
A game engine powered by python and panda3d
The game engine for everyone
Voxel game engine in C++ with OpenGL
Multi Theft Auto is a game engine
fheroes2 is a recreation of Heroes of Might and Magic II game engine
JavaScript-based game engine designed to empower developers
Cross-platform 2D and 3D game engine with modular architecture
Free game engine for development of desktop, mobile, and web games
Fast and lightweight JavaScript game engine built on WebGL and glTF
A modular Common Lisp game engine
Stride (formerly Xenko), a free and open-source cross-platform C# game
3D Procedural Game Engine Using OpenGL
A game engine with an emphasis on real-time cutting-edge solutions
A 2D rigid body physics engine for the web
A .NET ascii/ansi console engine written in C# for MonoGame and XNA
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
A Flutter based game engine
A high-performance, industry-standard 2D physics engine built on Box2D
A fresh & lightweight javascript game engine
An OpenGL RTS game engine written in C
Kotlin extensions for the libGDX game framework
Ct.js is a desktop game engine that makes learning programming fun
2D JavaScript Physics Engine