Metacritic is wrong and stupid. This game is about 10 times better than the DS version. Better power-ups, more Yoshi, 4 player co-op. What's wrong with these reviewers?
It took a long time to beat. I think I played it for... the entire day yesterday. Only took breaks to shop, eat, and watch 2001 for some reason.
I beat every main level in every world, but now I gotta go back and find secret levels and coins and stuff. Definitely worth $50, definitely tons and tons of replay value.
@student and Riot of the Blood, it's much longer and much harder than the DS game. There are basically some bullet hell parts with fireballs and Bullet Bills, and several things to dodge at once, while riding moving and rotating platforms. I'm gonna keep going back for secrets for a while, and then try to do the whole game over again in co-op with some friends, probably several times. It's definitely up there with SMB3 and SMWorld in the fun and replay department, especially with the multiplayer madness stuff.