Free 2D game development tool focused on the recent video cards for hardware acceleration and shader effects. It may be used to develop any style of game, such as top-down view RPG's, side scrollers and shoot'em up games. The main goal of this engine is to provide high-quality lighting, shadow and particle effects with an easy to use visual interface and a simple and direct scripting system.
The engine stopped working on the new OS X El Capitan, i didn't had the time to install the final version yet (im on GM). Have you tested @andresan87?