Update: Dec 2021. Do not play this game. You'll need to spend a fortune to get anywhere. And when you have an issue, the developers ignore you. When you lose resources you need to upgrade due to glitches, they say sorry, but we aren't going to credit you what we owe you. They do not have the smallest clue about customer service. If I could give zero stars, I would. Stay away. A game comletely ruined by the greed and stupidity of the developers. Stay well clear.