There is a nice balance of mechanics in the game. The goal of the game is to gain a certain amount of power, mainly by gaining it for themselves or stealing it from other players, although there are opportunities. Each turn, players must first simultaneously play a plot card, striking a balance between a card that either gives them more money, initiative for the turn or lets them earn more power. Players then use their income to play characters and locations from their hand, making sure they have a mix of cards suitable for the different types of challenge, military, intrigue or power. As players win or lose these challenges, they have to "kneel" the card they used in the challenge, meaning those cards won't contribute to winning Dominance for the turn. Winning Dominance gives the winning player more power, thus putting them closer to victory.
That's the basic turn process (I've missed out a couple things,) but the depth of the game only comes out when you look at all the individual abilities on your cards. I only caught a glimpse of the different abilities available, but the faction I played, the Starks, seemed in keeping with the background from the books i.e. good at warfare, positive effects had a downside too. All in all, A Game of Thrones was really enjoyable to play, seemed very balanced and had some great artwork on the cards.
Still, I've been trying to get the Mrs to play a few more games and I think this might be more her kind of thing, especially with the background material and the artwork. We have a holiday coming up in June, so I might pick up a copy for the evenings. Maybe.