The real issue with great novels to games is in the inherent ludonarrative dissonance that's created between the two formats.

You'd need to take the tightly formed and heavily point of viewed linear narrative of a novel and introduce gameplay mechanics, which ultimately hold their own narrative experience that often work counter to the story, all the while expecting it to hold remotely the same weight as the novel it comes from.

Imagine Catcher in the Rye, only you play Holden Caulfield and you have to walk into the Lavander Room, find a table, press X to sit, pull up a mini menu where you can order a Scoth and Soda only for a quick time event about your age to pop up! Sounds like a Quantic Dream game I guess 🤣

That's not to say that some books can't work in a game format, like The Witcher, but these books have a significant amount of world building that can reduce and accommodate the gameplays effect on the overall narrative pace.

Honestly, I'd say that the tighter the novel, the harder it would be to make into a game, without totally spinning off into the world the narrative inhabits, which isn't really the same thing.