I don't remember him saying the games butchered his work. From what I remember je doesn't care for them beyond the payout they "owed" him. He doesn't understand the medium at all and afaik doesn't know much about the story in them. And even if he did, it's all on the level of fan fiction to him (which is fair - he is reportedly writing another book from the universe and I understandnhe doesn't want to be tied down by things someone else wrote in his universe)