Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
3D game engine/framework in C, with Luajit and Python bindings now
Free, open source game engine online
A modular Common Lisp game engine
A Flutter based game engine
LayaAir is an open-source 2D/3D engine
Recreation of the classic Grand Theft Auto III game executable
Real Time Strategy game engine supporting early Westwood classics
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
Descent 3 by Outrage Entertainment
3D Game engine with editor
Cross-platform 2D game engine focused on ultimate productivity
fheroes2 is a recreation of Heroes of Might and Magic II game engine
The game engine for everyone
3D and 2D game engine written in Rust
Voxel game-creation platform with easy modding and game creation
A dead simple 2D game engine for Go
Free game engine for development of desktop, mobile, and web games
An easy to use 2D HTML5 game engine written in TypeScript
A refreshingly simple data-driven game engine built in Rust
A pure Go game engine
Open-source engine for Heroes of Might and Magic III
New Godot bindings for Swift
Voxel game engine in C++ with OpenGL
A high-performance, industry-standard 2D physics engine built on Box2D