As part of a promotional push for Metro: Last Light, THQ is giving away copies of the game's predecessor. All you have to do is like this page on Facebook, and you'll be able to download a free copy of Metro: 2033. The game scored 81 on Metacritic with an 8.1 user rating, so it's definitely worth grabbing.
THQ is hoping that playing the old game will pique your interest in the sequel, which is due out in March. To whet your appetite for that title, there's a new gameplay trailer dubbed Genesis. Have a look:
I've only played a little of Metro: 2033, and Last Light looks very similar. That's not necessarily a bad thing. The graphics are gorgeous, even if they don't stray too far from the classic Quake color palette. There's a hint of emotion in the trailer, as well, and I get a bit of an Aliens vibe from the frantic action sequence. Plus, no dubstep!
The Metro: 2033 freebie offer expires December 16, so you have a few days to sign up. Last Light can be pre-ordered for $50 if you like what you see.