Well, if you have some money, maybe you should buy it, 'cause it looks cool, but I'm not sure if it worth its full price.
I just played the first level of the game, and quite enjoyed. As the people told, the controls are indeed very simple, easy to understand, easy use, and happily, the game is fully compatible with the PS3 controller!
The puzzles were very easy to solve, but, it's just the first level so I think it is okay. The soundtrack, as the game art, is really adorable.
The only think I disliked 'til now, is the fact that the Princess don't stop to talk... Don't stop to talk while you're playing! I mean, her voice is really cute, but I just don't get the most part of the dialogs because I'm focused in what I'm doing on the game, and can't pay attention in what they are talking about (maybe if they spoke in portuguese, it would be easier for me to understand

).