I would like to recommend you "Metro 2033" by Dmitriy Glukhovskiy.
It is not a classical literature book but it might be intresting for you.
This book was very popular last year, so the sequel was written this year.
The summary of the plot is following. Nuclear war happened, population of the largest Russian cities was destroyed.
Moscow wasn't destroyed by a nuclear explosion but it was polluted. Survived people went to metro for permanent living.
Some time later, population fell into several states. The storyline have some resemblances to the plot of the Fallout game.