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.

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.


Amazon

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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Close Liaisons

Free
Science Fiction, Paranormal
4.1★ 5000+ ratings

For college student Mia Stalis, the invaders—the beautiful, mysterious, vampiric Krinar—are only stories on the news. None of it concerns her until she catches Korum’s eye.


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Reaper’s Run

Free
Science Fiction, Action
4.3★ 2000+ ratings

When Marine Sergeant Repeth’s blown-off legs begin to regenerate, she thinks it’s a miracle. But the breakthrough is exactly what the government desperately wants to quash.

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Lucifer’s Odyssey

Free
Epic Fantasy, Supernatural
4.0★ 150+ ratings

Imagine a war between angels and demons that extends across our universe. Now, think bigger. That’s Lucifer’s Odyssey.

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Rescued by Qaiyaan

Free
Science Fiction, Steamy Romance
4.2★ 1000+ ratings

With heart-pounding action, scorching romance, and love that defies all boundaries, Qaiyaan and Lisa’s story is a must-read for fans of alien romance.

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Patriot Son

Free
Science Fiction, Action
4.1★ 200+ ratings

Three nations conspire to take over America and set the stage for WWIII on the shores of the US.


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Forager

Free
Science Fiction, Horror
4.2★ 1500+ ratings

Keeping his mutation a secret, uncovering a girl’s true intentions, and trying to save a town from Skel savages all vie for Ethan’s attention.

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The Dark Rift

Free
Science Fiction, Supernatural
4.1★ 400+ ratings

Strange events lead archaeologist Gabriel Parker to a relic, and to the only person on earth who can help him unravel its apocalyptic mysteries.

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