Was OK for a while. Until I got to the level that switches between worlds with buttons. I can see it being a good 3-5 star game if it stuck with having us try to figure out this and that, but it immediately became annoying by having us switch between worlds with buttons. That's like having to open a door, peek out, close the door, work on your problem, open the door, peek out, close the door, work on your problem... With that level so early in the game, I just assumed there'd be more of that.