When the developers have a great concept but they try to milk the cow too fast! The balance in the game is horrible, you can he a really active player and spend 20 dollars every month and still never be able to get the proper items for the upgrades required. As said the concept is great but the balance is bad and the execution is even worse, giving it 2 stars because I like the concept and it looses 1 star due to the unbalance and 2 stars because the devs don't care