Now for the fun part of pretty much any Wii review.
Kororinpa: Marble Mania's controls are very simple and you can use either the Wii-mote itself or the Nunchuck. In either case, the horizontal and vertical tilting of the level that your marble is rolling on is directly tied to the tilting of your controller of choice. That means that as you tilt the Wii-mote forward, the level tilts forward. If you tilt it to the right, it tilts to the right. That also means, if you turn the Wii-mote upside-down, the level turns upside-down.
In Mercury, the level could only really slant a little bit in any direction. This meant that it required special objects to do nice tricks like putting your ball on the ceiling. In Marble Mania on the other hand, if you wanted to or needed to do that, you just have to position your self appropriately and carefully (and quickly) flip the Wii-mote. There were also a ton of times when I had to turn the whole level at 90 degrees in order to get up some walls that had gems on them. This made me feel a lot more in direct control over the level than I ever did in Mercury.
The only other controls in Marble Mania are the reset and pause buttons. Reset moves your marble back to the beginning of the track, but doesn't reset the time or put the gems you have collected back. This is good if you fall off the track and don't want to waste time falling, you can just tap the (B) or (Z) button and you're back at the start. Meanwhile, the pause button does exactly what it sounds like, that is done with the (C) or (A) button.
The only complaint I might have to file against Marble Mania is that it is too short. I flew through most of the game in a weekend and found myself wanting more. Besides that, I can't wait for a sequel, or (crosses fingers and hopes really hard) for Mercury to get ported onto the Wii.