World: the world fell into Nuclear War and all the nuclear warheads went off at once, there are a very little amount of survivors, and the radiation released a disease that brought the dead back to life and turned healthy humans into zombies and mutants through the form of bites, the world is a giant wasteland with barely any food, radiation is everywhere, the wind and rain is one of the biggest threats because it will bring the radiation to you, zombies and mutants only goal is to infect.