There is a George R R Martin Collectible Card Game. I was baffled by this when I spotted it in a games type shop today. I mean how do you even make those books be a card game? In fact I expressed my incredulity to the person behind the counter and we ended up having a bit of a discussion about it. They said that apparently it is good and works in clever ways.
When I got home I found a starter pack in my shopping bag. I checked my receipt and my bag and then checked the receipt again and then checked the bag again. Definitely in bag but not on receipt. Thank you, games store guys...