I got the game for the wii and almost beat it. I think the world of mushroom men is just amazing. The attention to details is awsome. The graphics and the artstyle is splendid and even if the game is short I think some who enjoyed the world will get back to it in order to get the collectibles. The gameplay is a bit average though and the camera may be a bit annoying.

I think the game worth the purchase if you enjoy fresh and weird game presentation and don't mind the short lasting appeal

I bought it today at circuit city (30% off games right now) and I'm really enjoying, the music and art are top notch. The visuals as a whole are no slouch either, the game runs at 60 fps at that level of detail, there are hiccups but they are not bad
The melee combat is a little basic, but whipping objects to beat enemies is fun
I've played about an hour so far and off hand I'd give it a B-B+