Stay away from this game. At the begining you'll be showered with rewards, the levels start easy, you think you're enjoying the game. Then the levels go from easy to hard to impossible. Your boosters will end, you wont have any more money to play, then you'll find yourself waiting to log in the game every hour a few times in order play a level. Then after 30 seconds of playing you are going to lose then you will have to start waiting again.