Godot is a powerful cross-platform game engine
Multi Theft Auto is a game engine
Fast and lightweight JavaScript game engine built on WebGL and glTF
The game engine for everyone
The Tiny JavaScript Game Engine That Can!
Solar2D Game Engine main repository (ex Corona SDK)
A retro game engine for Python
Powerful, mature open-source cross-platform game engine for Python
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
A refreshingly simple data-driven game engine built in Rust
dhewm 3 main repository
A .NET ascii/ansi console engine written in C# for MonoGame and XNA
Ct.js is a desktop game engine that makes learning programming fun
Animation Compression Library
3D game engine/framework in C, with Luajit and Python bindings now
Haskell game engine library for roguelike dungeon crawlers
A game framework written with osu! in mind.
Embeddable unity game engine view for Flutter
Rust library to create a Good Game Easily
Engo is an open-source 2D game engine written in Go
Open source reimplementation of GTA San Andreas game engine in Unity
A game engine for console based text games
A fork of Chocolate Doom with small Quality of Life enhancements
A fork of dhewm3 with an emphasis on modernisation and vanilla Doom 3