Here's a riddle for you, gamers:  What game first comes to mind if you were to, say, take Metal Gear Solid and give it a post-apocalyptic twist, and have Solid Snake as a Russian, fighting for survival and all mankind in Moscow's subway system?  Go ahead, I'll give you a second or two -- give up yet?  Well if you had guessed Metro Last Light by Deep Silver and 4A Games, then you'd certainly be ... more.