This is the worst game for ripping of people. I had 500 billion coins that it took a really long time to build and it was a challenge. In the last few weeks it I have been losing no matter what I do I lose I am down to 9 billion. I am not putting anymore money into this game and I am going to uninstall this game. The same thing is starting to happen with the Game of Thrones slots. These are both Zynga products. So I will never install another Zynga product.