User blog comment:Draevan13/Why is the 2012 RPG not considered canon on this site?/@comment-26308-20131215171252/@comment-26308-20131216193057

GRRM did not write any of the story at all. The writers at Cyanide did that. For the record the lead writers were Thomas Veauclin, Sylvain Sechi and Maximilien Lutz. Leon Deauvois, Medhi Leveque and Thomas Planques are also credited for writing side-quests and dialogue.

The writers presented GRRM with the script, which he gave approval to. He may have asked for some things to be changed, but if so, we don't know what. GRRM did not write any of the quests, storyline or dialogue for the game at all, and is not credited with doing so.