
The good news is THQ seems to be allocating more resources for Metro 2034. "The sequel's even more advanced in terms of the technology," said THQ executive VP of core games Danny Bilson. "The sequel's going to get a lot more support than the first one got both from product development at THQ and marketing. There were certain things in [Metro 2033], even though it looked sensational, some of the shooting mechanics need to be better polished to compete with the Call of Dutys. They are this time. For marketing it'll get a much more respectful push."

According to the official Metro website (scroll down the story timeline), a new game will be out next year picking up the story where the novels ended.

With the astounding success of The Witcher and Metro series it is a wonder that more books aren’t being adapted or continued in video game format. Here is a list of five books that would make great games.
Hideyuki Kikuchi's 'Vampire Hunter D' novels would make a great foundation for a Witcher/Bloodborne RPG hybrid - D is the perfect 'blank-slate' protaganist, plus his 'demon hand', half-vamp bloodlust and heat syndrome would make for a variety of interesting gameplay mechanics... The post-apocalyptic/sci-fi/fantas y setting has enough depth and complexity for any number of unique sidequests - many of which could be lifted from the books - and the world's gold-based economy could serve as a basis for upgrades/repairs to D's sword, armor, cyber-horse and such, whereas vampire blood could be a resource for levelling up his abilities.
Obviously CDPR would be my #1 choice, but they're gonna be busy with Cyberpunk (and it's all but guaranteed sequels) to ever get around to doing it... Platinum or Fromsoft would also make fine candidates - plus they're Japanese, which is always preferable with regards to anime-style games.
It amazes me that noone has ever attempted to do this (outside of an atrocious PS1 game), but there's currently an animated series in production - which will be based on the novels - so here's hoping someone from my aforementioned list of devs takes notice... done right, a game could be massively successful.
The Elric series by Michael Moorcock. All the Eternal Champion novels actually but the White Wolf Elric sits at the top followed by Corum and Urlik Skarsol.
The works of Phillip Dick or Harry Harrison, amongst many other Sci Fi authors, would be wonderful sources for game material.

Mature-Gaming recently got the chance to sit down with Global Brand Manager for Metro: Last Light and talk all things Metro.
"The good news is THQ seems to be allocating more resources for Metro 2034. "The sequel's even more advanced in terms of the technology,"
If this is true all I can say is WOW.
Metro 2033 graphic wise was outstanding and is the only game that stood up to Crysis in terms of graphics. It was the best looking game to be released in 2010. You just needed a beast PC to run it in its glory. When you did...damn the game looked smokn
I loved Metro. It wasn't perfect and it isn't for everyone but it really was something unique and immersive. The atmosphere was great and I personally didn't think the gun combat was as bad as people made it out to be. All the small ideas put into it were great as well. Definitely looking forward to 2034.
I have tasted Metro 2033 in all its glory, and honestly it put Crysis to shame as far as atmosphere goes. Adventure and action...Crysis still wins.
Graphically, I'd say they're about equal. Although I dare say the engine Metro uses is a bit more advanced on the technical level.
IGN = IGNorant
I'm still waiting for the English version of the book =(