One of the best platformers around that has set the standard, well deserving of your time!
Level design is superb and can be enjoyed by experts or beginers due to the included DVD and helpful tips. Levels get harder and more challenging as its supposed to do, making you apply old and new tactics constantly. Most importantly it is what its designed to be. Fun and more fun. This game has set the standard of platforming on the Wii and all consoles for that matter and is well deserving of a 10, your money and your time playing it!!
The multiplayer mode, however, is lacking compared to some other platformers such as New Super Mario Bros. No body wants to be player 2 in this game (just shooting things on the screen which can even make it more borring for player 1 as there are less things to do). Would of been very fun to have been able to play as Mario and Luigi at the same time. This downfall though can be overlooked due its overwhelming single player elements and thus still a 10, but with all games has elements to improve. A 10 does not mean perfect but has set the standard of platforming which this game has done.
Hope you have found my thoughts on this game helpful. Now go out and enjoy it too!