I think part of the confusion can be attributed to how the public in general perceives, or at least can perceive, both the Witcher books and games. Standard business model, at least in the West, is to monetize as much as possible from a single basic creation - thus franchises are born. So we have, let's say, a computer game that is the base, and then we have novels, comic books, action figures, movies, frigging McDonald's toys, and whatnot. It's because there always are people that watch movies, but not read books, or read books but not play games, and so on - and franchise wants to cover as many niches as it can (i.e. widening consumer base).
So people are basically taught to perceive things sharing a common name as different aspects of the same thing (i.e. franchise), and the same happens in case of the Witcher - even though there is no such thing as "The Witcher" books, or even "The Witcher" series (although the latter is commonly-yet-unofficially used, even by the author, as a way to refer to all the books covering the story of Mr. Geralt and friends). "The Witcher" is, in fact, the name of the game series only, not the books. And yet in general perception it is often confused, I suspect because it's how things are usually done (i.e. how corporations do things). Strictly speaking, "The Witcher" games are not part of any broader franchise that includes the Witcher books; in fact, "The Witcher" games are a franchise of its own, with its own subproducts, like the jigsaw puzzle CDP unveiled recently.
So I'm not surprised that Sapkowski doesn't want the two things confused, just as he never wanted any confusion with "The Witcher" comic books, "The Witcher" TV series (ugh), or "The Witcher" pen-and-paper RPG (yes, there is such thing).
That's also in line with what he stated about media convergence, essentially that a single story cannot be told when skipping from medium to medium. And I agree with that, because it's not storytelling - it's business trying to cover all the bases. So is the case with the Witcher: there's the books, and there's games, but they are not supplementing each other story-wise. They are separate, and they will stay separate. And, frankly, it's not surprising Sapkowski could get upset when he was asked tons of times how the games continue the story from the books, and if he had any plans to write books continuing the story from the games. They are separate things, whole ecosystems even, and they are to stay separate.
So people are basically taught to perceive things sharing a common name as different aspects of the same thing (i.e. franchise), and the same happens in case of the Witcher - even though there is no such thing as "The Witcher" books, or even "The Witcher" series (although the latter is commonly-yet-unofficially used, even by the author, as a way to refer to all the books covering the story of Mr. Geralt and friends). "The Witcher" is, in fact, the name of the game series only, not the books. And yet in general perception it is often confused, I suspect because it's how things are usually done (i.e. how corporations do things). Strictly speaking, "The Witcher" games are not part of any broader franchise that includes the Witcher books; in fact, "The Witcher" games are a franchise of its own, with its own subproducts, like the jigsaw puzzle CDP unveiled recently.
So I'm not surprised that Sapkowski doesn't want the two things confused, just as he never wanted any confusion with "The Witcher" comic books, "The Witcher" TV series (ugh), or "The Witcher" pen-and-paper RPG (yes, there is such thing).
That's also in line with what he stated about media convergence, essentially that a single story cannot be told when skipping from medium to medium. And I agree with that, because it's not storytelling - it's business trying to cover all the bases. So is the case with the Witcher: there's the books, and there's games, but they are not supplementing each other story-wise. They are separate, and they will stay separate. And, frankly, it's not surprising Sapkowski could get upset when he was asked tons of times how the games continue the story from the books, and if he had any plans to write books continuing the story from the games. They are separate things, whole ecosystems even, and they are to stay separate.
/> If he will not do it, I'm offended at him! 
