I fw this game. Like hard.
Metro 2033 is a pretty good story about saving your people while encountering certain situations that make you question if you really are doing evil instead of good. Aside from that, the gameplay is ok, the atmosphere is great, the optimization is ass, and the characters are decent. I guess these last would have a greater developments in the novels, which I still need to read...
If you want to, buy it on sale and give it a go.

See ya!