This game is just about the perfect example of a movie game: terrible plot, things that aren't in the movie, and everything wants to kill you. There are only a limited amount of inventions you can make. Of course Violet has unlimited fruits or candies, and Klaus's spring loaded device doesn't really use the spring loaded part. The bosses are all the same, very easy. There are so many things that defy the laws of physics, but who's really expecting all that from a movie game.
Overall, don't spend much money on this game. If you can get it for $5, get it and play it. But otherwise, it's definitely not worth it. I can beat it in an hour.