I played the demo. I have GeForce FX 5600. It runs perfectly. Game is nice, visuals are like Rayman series. In First level you have some hovercraft, and you have to shoot some alien. Second level is based on stealth, you have to go through the alien building and tak photos, unfortunately I got killed when alien chased me, I presume at the end of the level. I will definitely buy this one, Rayman 2 for me is the best platofrm game of all times, I am sure this one will be good too.