The year is 2034. Under the ruins of post-apocalyptic Moscow, in the tunnels of the Metro, what remains of mankind are besieged by deadly threats from without – and within. Mutants scale the catacombs beneath the desolate surface, and hunt the poisoned skies above. But instead of standing united, the station-cities of the Metro are locked in a struggle for the ultimate power, a doomsday device from the military vaults of D6. A civil war is burgeoning that could wipe humanity from the face of the earth forever. As Artyom, burdened by guilt but motivated by hope, you hold the keys to our survival – the last light in our darkest hour.