Games adapted from movies are a common feature of the videogame landscape and have been since close to to the dawn of of the medium. It’s more unusual to come across a game that’s based on a novel. But book-to-videogame adaptations are less uncommon than I realized— until I made a list of pnly a partial sampling.

Dune
Romance of the 3 Kingdoms
Dynasty Warriors
Parasite Eve
Shadow Complex
Suikoden (Water Margin)
Rainbow Six
Chaos Legion
I Have No Mouth and I Must Scream
The Hitchhikers Guide to the Galaxy
STALKER (Roadside Picnic)
Sherlock Holmes games
(Return to) Ringworld
Gateway
Riverworld
Agatha Christie
Hard to Be a God

Chloi’s article: http://www.ign.com/articles/2015/06/02/11-games-you-didnt-know-were-based-on-books