I'd like to see a second version, one with a much more wider choice of buildings and maybe different turrets. Buildings like schools, garages, fire stations, and stores would be a nice improvement. Also, survivors that you can actually place to shoot.
This game might turn out like Backyard Monsters. Once everyone gains sense and stops donating money to try and be better then they might stick us in the back and shut down the game
http://www.youtube.com/watch?v=R1y7aNM2BWU Never hurts to try. Seriously, consider this link, act like a noob and think the link is a hack, consider otherwise by consulting a friend who tells you this site is actually a place to share music and videos, and then listen to it for the next five days.