Lets see, I'm relatively new, but here goes.
I am interested in Metro 2033 due to its theme, Its in moscow. There has been many FPS with localities within the US, africa and europe, but never moscow ( at least in games I have played ) its a new city and a new perspective for me and since its based on a novel I hope the storyline is great.
I have loved a new perspective especially from russian or ex-soviet countries (I mean NO disrespect) remember back then a game called STAR WOLVES? it was a good game with new perspective, its like mechcommander but with spaceships. Or the original MAFIA, before 2k made the sequel, I say 2K made a great game, but a little too short for me. The original Mafia had hours of fun and a good storyline, and they got a full lineup of cars from the era. And then I saw The Godfather game, I am sorry its really incomparable, and as the italians say "forget about it".
I loved how these unknown games (seriously, we didn't have a clue of how good it is before playing) became my all time favorite. And to me personally, I crave for more, I got the hardware to fight, just let me have METRO 2033 to play