Watch your wallets, guys. This game is seriously addictive. Usually I am good at not using in-app purchases. Not here. I love that there are ZERO ADS. This is a really great game though. Always new levels and interesting graphics. My only criticism about the game is that I'm spending energy faster than I'm making it. It takes 3hrs to refill energy. If only the energy filled up faster. I can't farm fast enough to make room for new equipment.