Xash3D FWGS engine
Cross-Platform C++ 2D/3D game engine
Open source clone of the Age of Empires II engine
Fast and lightweight JavaScript game engine built on WebGL and glTF
Voxel game engine in C++ with OpenGL
Solar2D Game Engine main repository (ex Corona SDK)
High performance UI layout library in C
The game engine for everyone
Open 3D Engine (O3DE) is an Apache 2.0-licensed multi-platform 3D
3D and 2D game engine written in Rust
A modular Common Lisp game engine
Svelto ECS C# Entity Component System
A retro game engine for Python
3D Game engine with editor
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
A multi core friendly rigid body physics and collision detection lib
Cross-platform 2D and 3D game engine with modular architecture
Stride (formerly Xenko), a free and open-source cross-platform C# game
Godot Minimal Theme
A game framework written with osu! in mind.
New Godot bindings for Swift
Cocos simplifies game creation and distribution with Cocos Creator
3D Procedural Game Engine Using OpenGL
A fresh & lightweight javascript game engine
KorGE Game Engine. Multiplatform Kotlin Game Engine & Korlibs