From back of case, US edition Defy the laws of gravity. In the future racing is faster- MUCH FASTER. And it's totally merciless, which means ANYTHING GOES. Run by the Extreme Gravity Racing Association, this motorized bloodsport throws teams of futuristic bikes an daredevil riders against one another- through dangerous tracks crossing vast and treacherous landscapes, pushing all to their limits... And beyond! Select from Rock or dance- 2 different soundtracks to suit your style. Including tracks from BT and more.