Many games on a Mac are designed to be non-stop thrill rides, while others are all about using your analytical skills to get to the goal. Bob Came in Pieces is much more a game that makes you use your brain. As a physics based puzzle game, it provides you with a series of challenges, many of which focus on your analytical and visual skills. The challenges get progressively more difficult. While some of you may find that advancing level to be a good thing, many players will be frustrated by needing to try and re-try a task before it is complete. If you do not like repetition then you should consider trying a different title.