The game has an incredibly creative level design, which until today (Nov 2013) could not reproduce Mario game (except for the second part).
It is not about to run at each level to the end and jump to the flag as in quasi all current titles, but you have to complete various missions that could not be more different. Time you have a big bee encouraging crawl back, sometimes you have to fight a boss (which also be very different), sometimes you have to walk on a sphere and therefore this control in a goal undundund ...
In addition a great graphics (better I have not seen before on the Wii) and a breathtaking classical soundtrack, which I have already bought on CD (one of the best songs is "17 Wind Garden").
Conclusion: The game is very reminiscent of Super Mario 64, and is today, in my opinion, relatively monotonous, Super Mario games in every way ahead.