Fun at first then it becomes monotonous. You need more energy for less items& progressing to next level gets harder. Not sure how stars are awarded but they get more scarce as the levels get higher.Of course you can drop a boat load of money, actual real cash, and get farther faster. But that is not for me.Too bad. UPDATE: Received notice to update the game and now it is frozen. Keeps making me update, well I did and now it is stuck on 13%. Boo! Minus 1 star. Looks like I may have to delete :(