I think the mainstream game review sites are being too harsh on this title. It's not too short in my opinion. If you replay the game with an eye toward gold cups on every stage, it will take you a while. No, it's not a AAA game but it's a very satisfying experience. Next to Wii Sports it's the best game to show of the Wii remote that I've played. It's a ton of fun and pretty challenging toward the end. Plenty to be happy about. If you're a jaded hardcore gamer, then by all means rent this, it's well worth it. It's an impressive use of the Wii remote.
Four things I'd like to see in a sequel: 1. bumping option in multiplayer so players can play more cut-throat if they want 2. more stages 3. a maze editor so you can make your own stages! 4. a custom marble maker would be cool too
I was pretty surprised how good this game is in its physics and level maps. The features of the game will keep you entertained from start to finish. Two player or one, it's great for the whole family, too..without anything being too cheesy like telletubbes or whatever.
Game was pretty quick to finish, in my opinion. If you're looking to have this game almost twice the length, I'd recommend its sequel "Marble Saga".