Top Free Science Fiction Kindle Books

Whether you enjoy futuristic, dystopian, apocalyptic, space opera, or other sci-fi delights, you’ll find great books among our top 100 free Kindle science fiction books.

Escape from Samsara

Free
Science Fiction, Humor
3.8★ 400+ ratings

Barry must do battle to save his hide from talking hedges, samurai ghosts, meddling psychotherapists, and an inexplicably non-linear time pattern all conspiring against him.


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Birth of a Star

Free
Science Fiction, Novella
4.5★ 20+ ratings

So when Aldrea’s father is taken prisoner by a deranged Radical agent on a deserted planet, she doesn’t think twice–she goes after them. But time is running out.


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The Survivors: Summer

Free
Science Fiction, Suspense
4.2★ 1000+ ratings

Humankind’s extinction event has come and gone. Sandy McDermott survived, but can she find a way to live in this bold new world without losing her humanity along the way?


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Take the Shilling

Free
Science Fiction, Action
4.2★ 200+ ratings

Tomas Neumann seeks escape from his backwater planet and his overbearing mother and needs a mentor. Enlisting in the Confederated Worlds military is his only opportunity.


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Origins: Zombie Games

Free
Science Fiction, Adventure
4.2★ 1000+ ratings

Seventeen-year-old Cassandra Wild thought that living in the chaos of her mother’s home and her feelings for Bryce were a struggle until the whole world turned upside down.

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Maverick Gambit

Free
Science Fiction, Adventure
4.3★ 1000+ ratings

In Maverick Gambit, a ragtag crew crosses a galactic corporation to protect a town from space pirates.

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Beyond

Free
Science Fiction, Adventure
4.4★ 1500+ ratings

Aimee has been kidnapped, but after falling in love with Zak, she is now torn with the decision to return to Earth or live beyond the stars.


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Come Home to Me

Free
Romance, Science Fiction, Historical
4.5★ 2500+ ratings

Jake is sent back in time to protect a woman along the Oregon Trail. When he and Rachel’s forbidden attraction turns to love, what will happen at the end of the trail?

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The Darkest Winter

Free
Science Fiction, Action
4.4★ 2500+ ratings

Haunting shadows are nothing new to Elle St. James, she’s been running from them all her life. But since the outbreak spread, new monsters lurk in the darkness.


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The Chaos Job

Free
Science Fiction, Adventure
4.4★ 50+ ratings

Sil enlists the help of a former enemy soldier and sparks fly when chaos and luck collide. Ride along on this extraordinary space western of gods, AIs, nanobots, and hope.


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Surviving The Evacuation: Wasteland

Free
Science Fiction, Suspense
4.4★ 5000+ ratings

Four months after the outbreak, Bill Wright found safety in southern England. He believes he knows the origin of the conspiracy that created the undead, but he needs answers.


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Endless Chaos

Free
Science Fiction, Action
4.1★ 40+ ratings

When the Coalition is swept up in a deadly game, Death Spiral, only one cadet can save them. Sharon has a mind honed to play the most brutal game of all and she has to win.

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The Last Orphans

Free
Science Fiction, Teen
4.1★ 2500+ ratings

Filled with cinematic science fiction action, end of the world apocalyptic events, and heart pounding thrills, The Last Orpans will leave you enthralled from beginning to end. 

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Yesterday’s Thief

Free
Thriller, Paranormal
4.4★ 1500+ ratings

Private detective Eric Beckman can read minds. Yesterday’s Thief is a high-stakes paranormal sci-fi thriller.

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Roy

Free
Science Fiction, Humor
4.0★ 400+ ratings

This is the story of Roy, the architect of an epic crisis that paralyzed the largest space station in the universe. The lunacy behind it remained a mystery. Until now.


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Algorithm

Free
Science Fiction, Thriller
3.9★ 75+ ratings

Nanovax was supposed to be our salvation. I’m Lieutenant Brian Goff and I received the first injection. Amazing, until the algorithm identified me as a threat.


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