Multi Theft Auto is a game engine
Real Time Strategy game engine supporting early Westwood classics
Open source voxel game engine with support for survival and crafting
fheroes2 is a recreation of Heroes of Might and Magic II game engine
Open-source engine for Heroes of Might and Magic III
Open Source real-time strategy game engine for early Westwood games
dhewm 3 main repository
Magic Another Game Engine
RPG Maker 2000/2003 and EasyRPG games interpreter
Cross-Platform C++ 2D/3D game engine
3D game engine/framework in C, with Luajit and Python bindings now
Ct.js is a desktop game engine that makes learning programming fun
An easy to use 2D HTML5 game engine written in TypeScript
A .NET ascii/ansi console engine written in C# for MonoGame and XNA
A pure Go game engine
The Tiny JavaScript Game Engine That Can!
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Embeddable unity game engine view for Flutter
Kotlin extensions for the libGDX game framework
A game framework written with osu! in mind.
A fresh & lightweight javascript game engine
A cross-platform, open-source, pure C game engine for mobile game
Eva.js is a front-end game engine for creating interactive projects
A modern, cross-platform Quake game engine based on FitzQuake.
Engo is an open-source 2D game engine written in Go