It's different, but there's not enough options.
Pros: Unique puzzle idea. Fun for the first half hour.
Cons: Too short. Not enough options to play and no power-ups to add some spunk to the gameplay.
There really isn't any more I could say. It's one of those, "I remember Yoshi, I'll play it for a bit" and 45 minutes later you're done. You won't be back to play for more until at least a few months pass by. It's only worth purchasing on your Wii if you've played the game in the passed on your NES or Gameboy and enjoyed it somehow. Otherwise, grab a different puzzle game that gives you more options.