This might be old news to some, but I've just picked up on this. Cyanide, the developer that brought us Blood Bowl (a fantasy hybrid of Footy Manager/FIFA), is currently developing a strategy game based on A Game of Thrones, or rather its universe.

It's looking pretty snazzy:

Article, with screenshots

Official website.

It seems it will serve as a prequel of sorts (hence the "genesis"), allowing us to play through the battles and historic events that shaped Westeros as we know it.

I have a few concerns though. Given the exposure and popularity the series is enjoying at the moment due to the TV programme it seems an odd choice to pick Cyanide as the developer - considering they're relatively unknown and unproven.