Metro 2033 is a first-person shooter survival horror video game. The story is based on Dmitry Glukhovsky's novel of the same name, where survivors of a nuclear war have taken refuge in the Metro tunnels of Moscow. Players control Artyom, a man who must save his home station from the dangers lurking within the Metro. In the game, players encounter human and mutant enemies, who can be killed with a variety of firearms. Players must also wear a gas mask to explore areas covered in fallout radiation, both underground and on the surface.