The two stars... because its playable and great graphics but thats all. After reaching around level 50 when the game is now feeling good they will chew off all your coins and if you make no purchase then you will be out of coins. Since this said strategy is very systematic I think thats why my rating is that low. This here is a free game there should be no such underhand methods, instead the game being a gambling game it should be based upon pure random winning chances.