The flexible game engine
Stride (formerly Xenko), a free and open-source cross-platform C# game
Multi Theft Auto is a game engine
Solar2D Game Engine main repository (ex Corona SDK)
Flax Engine, multi-platform 3D game engine
Svelto ECS C# Entity Component System
A pure Go game engine
A game engine powered by python and panda3d
Ct.js is a desktop game engine that makes learning programming fun
An easy to use 2D HTML5 game engine written in TypeScript
dhewm 3 main repository
Descent 3 by Outrage Entertainment
Free game engine for development of desktop, mobile, and web games
scene-oriented, flexible 3D engine (C++, Python, C#, Java)
The ioquake3 community effort to continue supporting/developing id's
The Open Toolkit library is a fast, low-level C# wrapper for OpenGL
Recreation of the classic Grand Theft Auto III game executable
New Godot bindings for Swift
High performance UI layout library in C
3D Procedural Game Engine Using OpenGL
Voxel game-creation platform with easy modding and game creation
Xash3D FWGS engine
Powerful, mature open-source cross-platform game engine for Python
The HTML5 Creation Engine
Open game and rendering engine packed into a JavaScript framework