A few problems...
Very simple to play, and still a lot of fun. My biggest problem was at the race to the finish level. In the GC game, you fall, you don't get a high score. I didn't like to have this mini-game a requirement, as I really sucked at it. But other than a few other nit-picky "OMG IT ISN'T TEH REAL THING" issues, this was a lot of fun! Well done!