Metro2033

[Tweezy]

50% off for the weekend! Great game, but the specs are fairly high!

http://store.steampowered.com/app/43110/

[Farmer Mick]

i got a good deal on my version

bought it just after it came out £24 + red faction:guerrilla

brilliant game if a little short

[Spiritwind]

Played Metro until all you fight are people. Got bored there, hate games with checkpoints =p. Play on hard the first time around, and you can say you've played the game 5 times because of loading.
But overall, its a great game.