So as you progress in the game, the levels begin to become harder and you have to face tougher monsters. You are judged on whether you pass the level of not on how many stars you earn, so there are a total of 3 stars and you only need 1 to progress. The game is fun but not the most amazing game on the Mac App Store. I also like how they integrated the fact that to select something on the menu you have to shoot it, just like in Fruit Ninja you have to slice it. Overall, I like this application but I would give it a 3.5 stars.
-Thanks for reading and Happy Tech(: