Axmol Engine
Multi-platform Engine for Desktop, XBOX (UWP) and Mobile games
...It improves upon the original Cocos2d-x with a cleaner architecture, better tooling, and support for modern C++ standards. Axmol supports scripting with Lua and JavaScript, and is suitable for both indie developers and studios targeting mobile, desktop, and web platforms. With an active community and frequent updates, Axmol is a solid choice for cross-platform game development.