Marty Party 5 is a good party game for the GC, but is a lot like the previous Mario Parties.
The boards are more developed. I also like the addition of the capsules, adding more luck and chance to the game.
The music is quite a bit more "happy". The sounds are the same old school Mario sounds.
The gameplay is fun with buddies and boring alone. Who plays multiplayer games alone anyways?
Overall this is a good addition to the series. Although, you should only pick it up if you have a lot of friends. Otherwise, only good for a rental.