A Song of Ice & Fire RPG
I gave it a try in person once, but it didn't catch with my group, and I have a terrible record of running games on here. Great as a player, terrible as a GM..
Wouldn't mind trying to play in one again, as the one I used to play has now sorta dried up (I had RL happen, and wasn't as active as I planned on being.... but it lasted a while, and still have people who check)