THQ is giving away the first Metro game as a promo for the new and upcoming one, page here: http://www.enterthemetro.com/us/news/contests_giveaways/get_a_free_pc_digital_copy_of_metro_2033_us/ You have to like 'em on facebook though, the game is Steam only. I liked the game, if you enjoy atmospheric/slightly fear based FPSs, this one is good.
I got this game about a year ago as part of a pack and liked it enough to finish. It was good, not great, but anyone who likes a linear FPS type game a la Half Life could find this game enjoyable. If you do end up playing, try to play the whole game without NVG or flashlight, I didn't pay enough attention when they explained their use and never figured it out until the very end... Certainly upped the difficulty!
My facebook is 99% people I don't care about sharing baby pictures, so why not use it to sign up for random crap? Thanks for sharing this, Tuo.