AttoEngine Atto game engine Other engines https://github.com/hugoam/toy https://github.com/hugoam/mud https://github.com/floooh/oryol https://github.com/mosra/magnum https://github.com/xenko3d/xenko https://github.com/ConfettiFX/The-Forge https://godotengine.org/ https://playcanvas.com/ https://github.com/turanszkij/WickedEngine