Well, I like the idea, but it seems like it kill you in no time. Walls was useless and very high price. Towers add to surviving, but killed very fast. In time the farther you from the building place the longer to go. The less time i have. It's like frustrating. And these guys are boringly go every second non stop! :) It would be nice to have a breathing time and to just build up. And to know what's coming.