Cheers for that. I'll have zombies running around somehow anyway, well shambling around. Was just trying to get an idea for how widespread they are. My zombies are caused by a mutated virus reanimating bodies that died in regions where there had been chem and bio weapons used which had mutated with each other, caused by radiation. Not sure of the science of that, but I'll not let it stand in the way of a good game
The virus then lives in its host and is spread by zombie bites - the people they kill get up and kill