Now in use on over 150 projects, the Vision Engine gives you the freedom to create the type of game you want (MMOs, FPS, RPG, casual, serious, etc) on the platform of your choice. It has been carefully optimized to efficiently utilize all available hardware resources on all major platforms, including PC, Xbox360®, PLAYSTATION®3 and Nintendo Wii®, and now even browsers.
Technically solid, well designed, looks beautiful, great performance, true multi-platform. I've worked with this engine for some time now and I really recommend it.