Excellent game that brings back the feel of SNES Mario Kart days.
Sound - Typical Mario Kart & racing game noises. The car noises seem like they'd get a bit old after a few hours of gameplay, but the DS is usually the system of burst gaming anyway.
Gameplay - Everything you love about Mario Kart in a portable package.
Controls - The DS itself can cause some finger cramping after a few hours of playing, but frankly any game that can keep you entertained for that long deserves some praise.
Overall - Bright, fun, fast, and entertaining - everything about this game was executed perfectly. The Wifi gameplay could use a better system for connecting and gaming with your friends, but being able to play around the world for free is pretty cool.