Allow me to Explain why I give this a 1 star. There are only 40 levels and 3 different maps in total. Once you hit lvl 40 there is no more leveling. Once you unlock your 3rd map there are no new maps. The amount of money needed to buy Ore deposits and upgrade them is beyond measure. I've had 10 Quadrillion in money and it still isn't enough money in the end. The only way to get all of your deposits and complete a map is to cheat the system. After 3rd map nothing follows. Nothing!