"There are three objectives in D&D: collecting treasure, gaining experience points and, most importantly, staying alive." - What is Dungeons & Dragons? p.86
Urban decay... Fascinating and unsettling at the same time.
“The worthy GM never purposely kills players' PCs. He presents opportunities for the rash and unthinking players to do that all on their own.” E. G. G.
Thing is, the city is becoming Mutant Futuresque while still being inhabited, without an apocalypse (or at least one that most people have taken note of).