Talk:Survivors/@comment-71.194.106.57-20120723010913/@comment-5296692-20120724125247

Gate crashers are the survivors that show up at the main gate periodically. Purchased survivors would be those that the recruiting agents in the special heroes' building are able to bring into the town.

With gate crashesr you're going to have to commit a decent amount of time to the game to see all the varied skill levels.