LOl i set the rules to: number of civs, 100,armed civs 0,civ accuracy 10%,number of zombies, 20, zombie direction west, zombie speed very fast,infect time 1 sec, police 1, police accuracy 10%, after a while i got 1021 zombies and no dead people/zombies, because the infect time is so quick
1000 civilians + 1 police cop + 20 zombies = 1021 zombies XD