I'm playing on harder, and I was just attacked 4 nights in a row and went from 25 squers and 24 people to 11 squers and ONE survivoer. All I needed to do before these 4 nights was to build 2 labs and one church to start making the antidote to win the game!!! Seriously!!!
fine, my computer is crappy, but seriusly. on the level where I'm being chased, they pop out of a tube at exactly the same time as I do, if not before I do... I really need a new computer...