No Mutants Allowed

INSUFFICIENT DATA
NEED INPUT
What ideas do you have?

What kind of post apocalypse, a everything returned to zero one or the kind of while most country still exists but everyone on earth have even more shittier life after the apocalypse.

Everything is back to Zero.
think metro and stalker over Fallout

How about the Sewer in London.

What's causing the apocalypse in this novel? Shambling deceased? The war to end all wars? The second coming of the swamp-god? MegaFlu?

War to end all wars