Fun to play but stacked against you deceptively. Just when you think you are going to hit a promotion that allows you to buy into a higher tier you find out there are 3 or 4 levels within that rank. Also I believe the red tanks are bots used by the program to keep you from advancing. 15 out of 20 games I was specifically targeted and taken out in one shot. Doesn't give you a fighting chance and reduces the fun. If they are for reals they should be in a separate battle. I guess it makes u pay