Don't judge a book by it's a cover!
As for gameplay, it's varied, the shooting sequences are really bad and seem out of place in a game like this. Also the sensor bar sometimes doesn't pick up when you throw a ball and when you are in a timed puzzle it can get really frustrating. This becomes a real problem when you go into puzzles where you must fling the balls at incoming enemies to protect something, and if you aren't quick, the enemies will easily overtake you.
But the game itself is a gem if you can overlook these, the puzzles are very nicely done, with you having to use your brain outside the box to solve some of the tougher puzzles and the multiplayer is a blast when you get a few of your friends together.
Here's the rundown though, if you love puzzle games then get this because if you don't you are missing out. If you are a hardcore gamer though, I think you should either rent or skip this up because the cartoony graphics and frustrating controls at times could really put you off.