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 200 free Kindle science fiction books.

Exile

Free
Science Fiction, Action
4.5★ 1000+ ratings

Vice Admiral Isaac Gallant is the heir apparent to the dictator of the Confederacy of Humanity. Unwilling to let his mother’s tyranny stand, he joins the rebellion.


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Out of the Past

Free
Romance, Science Fiction
4.1★, 400+ ratings

Torie Mills decides to find some solace from her fast paced and demanding life by moving to an old family homestead. She discovers that restoring the house opens a portal into the past.


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The Off Grid Survivor

Free
Science Fiction
4.0★, 1000+ ratings

Twenty-five years ago, Conrad Drake’s life was shattered. Now, he lives a life devoid of modern conveniences and things that do his soul no good. Then, the world around him tumbles into lawlessness.


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Faring Soul

Free
Science Fiction, Romance
4.3★ 100+ ratings

Rumors emerge that Catherine has been seen in Federation space, so no one pays attention to the reticent navigator called Bedivere X who pilots her ship better than she does.


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Coronado Dreaming

Free
Science Fiction, Adventure
4.1★ 100+ ratings

Soon after two soul-mates meet, Greg finds himself in the strange, dreamlike world of a coma, a bizarre quantum multi-verse that blends time and distance, love and destiny.


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Prime City

Free
Science Fiction, Thriller
4.5★, 100+ ratings

Marcie thought preventing a war was tough, but only because she’d never been to Prime City. To some, Marcie is a hero for the part she played in preventing a war. To others, she’s a traitorous liar.


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The Prometheus Prophecy

Free
Science Fiction
4.1★, 100+ ratings

After global war and endless chaos, an iron-fisted regime now governs society from the elite Inner Cities to the impoverished Outer Areas. Adama, a young doctor, finds hope in resistance.


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Releasing Rage

Free
Steamy Romance, Science Fiction
4.3★ 2500+ ratings

Half Man. Half Machine. All Hers. When Joan survives the unthinkable, Rage’s priorities are tested. Is there enough room in this cyborg’s heart for both love and revenge?

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The Defectors

Free
Science Fiction
4.2★ 500+ ratings

On her mission to rescue her best friend Greyson, twenty-year-old Haven Allis will discover a revolution in motion and be forced to question everything she believes.


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Forgotten Time

Free
Science Fiction, Romance, Historical
3.9★, 750+ ratings

Katherine Jamison never imagined that taking a job at a prestigious auction house would result in her waking up in 18th-century England, betrothed to an arrogant, self-centered Earl.


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Victim Zero

Free
Science Fiction, Action
4.4★, 1000+ ratings

The plague was born from hope, meant to change the world. But when the world ended, the weight of its dead fell on the shoulders of the man at the heart of it all. For Kell, survival is not enough.


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Outback Outbreak

Free
Horror, Science Fiction, Suspense
4.2★ 1000+ ratings

The outbreak changed everything, but there are some bonds even the undead can’t break. It’s been years since Pete Guinn last saw his sister and now she’s back.


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The Fall of Man

Free
Science Fiction, Action
4.3★ 100+ ratings

After the bombs fell and the old world passed away, two sides emerged from the destruction. As tensions mount and blood begins to flow, friends become enemies, and allegiances to melt away.


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The Chameleon

Free
Horror, Supernatural
4.3★ 100+ ratings

When a series of appalling murders leads the local sheriff to conclude that the perpetrator may not reside in the mortal realm, he recruits a horror novelist to offer insight into the investigation.


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Colony One

Free
Science Fiction, Adventure
4.1★ 1000+ ratings

At a glance, Elderon seems to be a utopia. As Maggie realizes that Elderon is not what it seems, she’ll go undercover and learn a truth that could put her life in jeopardy.


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The Hunted

Free
Science Fiction, Thriller
4.2★ 1000+ ratings

Joule and Cage Mazur feel like prisoners in their home. With monsters stalking the streets, their family’s only protection is bolting the door tight and hoping the locks hold.


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