Summary: Well, neither. It is a fun game, as others have mentioned, that seems to have been perfect for the Wii, and takes full advantage of the Wiimote's capacity to use motion control. Gameplay is brisk but challenging - sometimes extremely challenging - and the sound and presentation are solid, if unspectacular.
Summary: I'm not a big puzzle fan, but Mercury Meltdown: Revolution is a pretty fun little game. The goal is to guide a blob of mercury to the end while losing as little of it's mass as possible. Yes, this is a puzzle game, and many stages will require some in-depth thinking before you can figure out exactly how to navigate the obstacles.
Summary: The critically-acclaimed Mercury Meltdown series has finally made its way onto the Wii, and its still as fun as it ever was, if not even more fun. Like every puzzle game, MM: R is hard. However, UNLIKE most other puzzle games, Mercury Meltdown never feels annoying, like it isn't worth it to keep playing. Its brain-teasing, but never frustrating. Plus, there is a surprising amount of re-playability in this game, as you push yourself to do better.
Summary: This is a great game!! From the reviews that I had reas I was a litle worried but my 6 year old kicked my butt on this game!! So for those of you that say it's a hard game it's really not..it's fun and addictive!! Get this game!! You will not be disappointed in it!!