Somewhat short, but otherwise an outstanding game!
Graphics: Also really well done. The characters, enviroments, enemies, and every little detail meshes the way a mario game should. Gorgeous looking game.
Sound: Besides the really annoying babies crying, the sounds and music on this game are on par with the graphics and gameplay. Really good stuff.
Overall: If the game had some more length to it, I don't think I could really find a major flaw. Well done game, if you're thinking about it, go for it. Worth the buy.