They have a Game of THrones board game that is pretty fun. You take on the role of one of the grest houses and try to take over Westeros with your army. SOrt of risk style but they also incorporate politics into the game and some other variables by adding diferent strenghts to your armies.
So they could do some sort of game like that.
Or they could do a RPG game. I would so lay down some cash for a RPG game of thrones game.