Summary: This game is fun for younger kids. I played it and it was fun. It's a lot like Mario Kart as well. It's basically an Xbox or PS3 version of Mario Kart. It was a well made game. Even though it may not even come close to a league of Mario Karts it's fun enough. The power ups are cool and the characters are too. I beat the game well under a day. It is a little easier then Mario Kart, the maps are simpler and there is no map compared to Rainbow Road.
Conclusion: I bought this game for my 5 year old nephew to play when he comes to stay. The game is quite similar to mario kart. Its great fun to play, easy enough for kids to play and becomes addictive for us adults.