Buying extras? – TapDefense Review

Love this game. I've played it for years and play at least two games each time. Problem is they've supposedly got different maps and defensive armament. But I don't know how to get any of them and the seller ain't talking! My rating is for their no touch way of treating customers. The game itself is five or six stars!
Review by The nickname "Metalsmith" is taken, because it's MINE! on TapDefense.