Metro 2033 is a gripping, atmospheric first person shooter experience powered by cutting edge technology, featuring full DX10 and NVIDIA PhysX support for high-end gaming PCs, to deliver incredible visuals.
(LOL its funny to read descriptions of "cutting edge technology" in older games)
Set in the shattered subway of a post apocalyptic Moscow, Metro 2033 is a story of intensive underground survival where the fate of mankind rests in your hands.In 2013 the world was devastated by an apocalyptic event, annihilating almost all mankind and turning the earth’s surface into a poisonous wasteland.
…for 24 hours, then you can't play it anymore unless you buy it.