Great game. At first it was almost perfect: purchases do not affect your career, ads only for earning in-game money, which is ideal for a free game. I understand, that the free app should have ads. But, the annoying ones that play after EACH battle are awful. Well, there are ads, that play 5 sec and you can close, but there are some up to 30 sec without any option to cancel it. I'd definitely give it a 5 star for game itself, but -3 stars just for the ad policy.