Not exactly the best game ever, but its cute and mildly entertaining.
For just $10 bucks, it is a fairly entertaining little diversion. And it is hard to get away from the cuteness factor. The controls are not very good (but lets face it, the PS3's tilt sensors are crap anyway). But it is simple enough that just about anybody can play it, and I actually found that it made for a halfway decent group activity.
There is a free demo. Try that out first before you buy it, but at least give the game a chance, you might find that it is just the kind of mindless fun that you are looking for on the off chance that maybe you are tired of killing monsters or blowing stuff up or racing cars at 200 mph or whatever you usually do on your PS3.