Really liking this game. First game I've ever bought in this series. The levels are fiendish though, and will often have you screaming in frustration. In a good way.
Basically, its Nintendo's take on Pipe Mania. Plus, there's so many different modes, and a level editor so its good value for money.
I've completed 10 levels of each mode, and I am on level 49 on the main mode.