Metro 2033 - Dmitry Glukhovsky

The year is 2033. The world has been reduced to rubble. Humanity is nearly extinct. The half-destroyed cities have become uninhabitable through radiation. Beyond their boundaries, they say, lie endless burned-out deserts and the remains of splintered forests. A few thousand survivors live on, not knowing whether they are the only ones left on earth.They live in the Moscow Metro, the biggest air-raid shelter ever built. It is humanity's last refuge.