[ocdtrekkie]

I think books are suitably different mediums but get cross adapted just fine. I don't think the suggestion that they're "for storytelling" holds weight, many games have very linear stories you play through with little flexibility.

And books often are even harder to translate the story aspects for because they usually take place over much longer time spans than movies or video games. Many movies made from books seem to have character relationships that seem like they should have taken much longer to develop because of it.