We all know that the science fiction genre embraces wild imagination and bold ideas, but it can also give us some pretty darn creepy experiences. If you’re a fan of ghost spaceships, rogue AI, or just sci-fi that makes your blood curdle, then buckle up. I have compiled a list of the best sci fi horror books that will give you goosebumps and make you think twice about turning off the lights. Hold on tight for the ride of your life.
These are the best sci fi horror books known to man
The Luminous Dead by Caitlin Starling

This novel is a thrilling sci fi horror that explores the depths of the human psyche. The story follows a caver named Gyre who takes on a dangerous job deep beneath the surface of a hostile planet. The claustrophobic setting and the tension between the two characters make for a gripping read. This book will make you feel like you’re running out of oxygen. Read it here.
Nightflyers by George R.R. Martin

Yes, the same guy who wrote Game of Thrones also wrote a science fiction horror novella. Aboard a spaceship, the crew experiences a malevolent force that gradually drives them insane in this creepy tale. The story brims with psychological horror, gore, and a sense of dread that will keep you on the edge of your seat. Think Event Horizon in book form and you’re good to go! Find this sci fi horror gem here.
The City by Dean Koontz

This novel tells a disturbing tale of a future world, where humans have genetically altered themselves to be “perfect”. But, of course, all is not as it seems. The story is a blend of sci-fi, dystopian, and horror. The eerie atmosphere and the twisted plot make for an unsettling read. Dive into The City on Kindle here.
Dahlgren by Samuel R. Delany

This post-apocalyptic novel is a mind-bender that will leave you questioning your own sanity. In the story, the setting is a ruined city where the laws of physics and time become distorted and twisted. Reality and madness blur the line, leaving readers trapped in a never-ending nightmare.This book is not for the faint-hearted, even if it’s not quite your classic idea of sci-fi horror. It was banned in the 70s and has a whole lot of twisted stuff in there. If you have Kindle Unlimited, you can get it for free here.
Annihilation by Jeff Vandermeer (my personal best sci fi horror books pick)

This novel is a haunting tale of a team of scientists who venture into a mysterious, uncharted area called “Area X”. You may have even seen the screen adaptation on Netflix. The atmosphere is surreal and dreamlike, and the imagery is both beautiful and disturbing. This book is a perfect example of the New Weird subgenre of science fiction that combines horror, fantasy, and surrealism. Definitely one of the best sci-fi horror books out there. Grab this one here!
And there you have it, my fellow fantasy lovers! The best sci fi horror books that will leave you scared and thrilled at the same time. These books showcase the beauty of the sci fi genre, and how it can delve into the darker aspects of human nature. So, grab a cup of tea, turn on a nightlight, and get ready to be spooked.