Metro 2033 (PC) CD key

The story is set in 2013, when the whole world is destroyed by a huge fire, most of the human race is extinct and the earth's surface becomes non-residential area filled with poisons and hazardous gases. Several strongest survivors take refuge in the depths of the Moscow underground, and human civilization enters a new dark age. In 2033 an entire generation has been born and raised in  Moscow underground. These new cities now struggle for survival, not only among themselves, but especially against the mutants.