If you want a game designed to frustrate you and desperately try to scam money from you then this game is for you! You can't progress unless you're running boosters and of course King entertainment will be happy to sell you boosters. Absolute rigged B.S. I made it to level 1128 and just couldn't take it anymore. I had to uninstall. Corrupt and dishonest company trying to suck money our of you $2 at a time!