Sort of fun if you like city builder games, but overall it's a big waste of time. Auto Calc battle is unfair and you lose so many troops. It's like a monkey plays for you. Absolutely not worth auto calculating battles. They are EXTREMELY stingy giving their premium currency (diamonds) out to you so be wary. After a while you realize there are hidden mechanics that you should have been doing the whole time and that you need a meta strategy or get stuck in mud. Overall not well well thought out.