Name of a Wii game where you play in the shadows?

Okay thats a little bit of a vague description, but I am looking for the title of a Wii game that I saw on display at BestBuy within the last year. Basically it looked like a side scroller type game, but your "character" was a shadow and you played in the shadow of the items on the screen. If that makes sense. I really don't know how else you would describe it. Anyway, if anyone happens to know the title to this game I would appreciate your help.