I was thinking of doing a post apocalyptic-themed RPG in which the characters would struggle to survive after most of society was killed in a nuclear war. Some people would try to make a living as a bandit, killing others to survive and some would group up and do this. There are no laws, no morals, and no time-outs. Just full-on fight to survive in a world with little left. Additionally, I was thinking the animals could have mutated in dangerous ways and they further threaten survival but what do guys think of the idea so far? What do you think of the humans possibly mutating in ways?