User blog comment:Draevan13/Why is the 2012 RPG not considered canon on this site?/@comment-26308-20131215171252/@comment-1600847-20131218180913

Because I thought IMDB was an official source. My mistake.

As to the credits, I haven't watched them since I finished the game last year (I'd watch the video Werthead provided but I'm at work and youtube is blocked). While I remembered GRRM was indeed in the credits, I didn't know where.

I also know he liked the game, and that he did indeed have creative input in the game's creation and made sure it stayed canonical as he states in the following interview:

www.vg247.com/2012/04/04/george-r-r-martin-largely-happy-with-cyanides-game-of-thrones-rpg/