Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
The game engine for everyone
Fast and lightweight JavaScript game engine built on WebGL and glTF
Open source library for creative expression on the web, desktop, etc.
Free, open source game engine online
2D Game Engine
The Atomic Game Engine is a multi-platform 2D and 3D engine
Egret is a brand new open mobile game and application engine