This is one of those games where you are hooked within the first 5 minutes of playing it.
Graphics: The environments are luscious, and well detailed. The karts are no different. Even the items are detailed. Nintendo put a lot of hard work into this game.
Sound: The music is well done, and it's not blown away by all the SFX. Even the retro level music is kept, and redone quite well I might add.
Difficulty: This game starts you off easy, but then at 100cc, the comps are near merciless, so it'll be hard to beat them.
Overall, this is a must-buy for any DS owner. Plus, it's got Wi-Fi.