I'm giving it a 3 stars because I literally downloaded this today and I swear I've been trying for an hour and a half to get 3 stars on level 15, i honestly think that level is bugged or the moves aren't enough, which I'm guessing is on purpose becuase I'm betting there are other levels like this one and you (who ever you developers are) are doing this becuase you want us to pay for the power-up things.