This game is really bad. It is riddled with bad design decisions that leave every single piece of the gameplay somewhat broken or at the very least really unbalanced. The limiting factor of how large the armies can be, the maximum amount of troops you can have, the low lethality of combat, the weak attacks of armies, the randomness of how often you can adjust the amount of resources you have in your kingdom, the randomness of when you are allowed to recruit new troops.
The almost complete lack of any theme connected to the Song of Ice and Fire world, unbalanced geographical regions and starting positions. Just weird combat design where you have house cards that give you a bonus, but can only be used once and not again before all your crap cards have been spent rendering your initial successful attack to be followed up by a certain defeat.
This game has a decent score on BoardGameGeek, and it has been out of print for some time so the price for this game has sky rocketed as the TV show Game of Thrones is really popular. Don't fall for the hype surrounding the name of this game, it is a pretty bad game all round and you will be disappointed.
Check the full review of the game mechanics and the explanation of why stuff don't work well in the full review on my blog:
http://anatolisgameroom.blogspot.com/2011/06/game-of-thrones-boardgame.html