The concept is nice and the game would be so much more fun if it didn't require so much money or extreme patience to proceed. I have been stuck on the same level for a while now and cannot pass it without upgrading a bunch of stuff which I've been doing very slowly. They also cheat you out of coins and I mean a lot of coins. This game is set up to make you spend a bunch of money and go nowhere very slow. It ruins an otherwise cool game.