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.
Use the GLSL shaders in the OpenGL implementations and drop Cg on Mac/Linux.