While you’re probably aware of many movies and television shows that were first written as novels, you may be surprised to learn which video games derived their plots from novels as well.

Here’s a short list of popular video games and the books that inspired them:

Metro 2033: Inspired by Metro 2033 by Dmitry Glukhovsky – This game takes on the same plot and protagonist as the book. 20 years after a nuclear apocalyptic event annihilates most of mankind, Artyom journeys out to the wastelands above the subway system on a mission to alert other survivors of a new threat.

BioShock: Inspired by Atlas Shrugged by Ayn Rand – BioShock is loosely based on the many of the principles laid out in this book, where the decisions of a few industrial leaders shake the roots of capitalism and reawaken man’s awareness of himself as a heroic being.

The Witcher: Inspired by The Witcher (series) by Andrzej Sapkowski – Both follow Geralt of Rivera, a cunning assassin known as “the witcher,” who waits for the birth of a prophesied child who has the power to change the world – for good or for evil – as a war between the humans, dwarves, gnomes, and elves threatens to erupt.

Scott Pilgrim vs. The World: Inspired by the Scott Pilgrim comics by Bryan Lee O’Malley – The side-scrolling game adaptation follows the adventures of Scott Pilgrim as he battles his way through Ramona Flower’s seven evil exes.

Dante’s Inferno: Inspired by Inferno by Dante Alighieri – The video game is a loose adaptation of the first canticle of Dante’s Divine Comedy, which tells the story of Dante being guided through the nine circles of hell by the spirit of the poet Virgil.

Spec Ops: The Line: Inspired by The Heart of Darkness by Joseph Conrad – The game presents a modernized version of the novel, about a man named Charles Marlowe who sails down the Congo in search of Kurtz, a company agent who has, according to rumors, become insane from the jungle isolation.