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.

Alien Species Intervention

Free
Science Fiction, Suspense
4.0★ 1000+ ratings

After years of enslavement, Netty flees into the night from her husband, traveling back to her parents’ farm, where she rescues an enigmatic and damaged creature named “Baby” with whom she falls in love.


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Traveler in The Dark

Free
Science Fiction
4.0★ 500+ ratings

Sixteen hundred years ago, they fled Earth. Now their long journey may finally be at an end. But they must make a choice. Sacrifice another species or accept their own extinction. And time is running out.

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Aurora: Darwin

Free
Science Fiction, Suspense
4.3★ 750+ ratings

When a distress signal is received from a black-ops space station on the edge of inhabited space, Captain Saul Harris of the UNF Aurora is called in to respond. But the mission is not what it seems.


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Open Minds

Free
Science Fiction, Teen
4.2★ 2500+ ratings

Sixteen-year-old Kira Moore is a zero, someone who can’t read thoughts or be read by others. When everyone reads minds, a secret is a dangerous thing to keep.


Amazon

We the People

Free
Science Fiction
4.1★ 200+ ratings

In the late 21st century, a neurotechnology called Bridge changed the world. A new world order developed. Bridged Children grew smarter, faster, and stronger than Adults and began a war for equality.

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Under A Dark Sky

Free
Science Fiction, Action
4.1★ 75+ ratings

On rebel planet Elysium, a man is executed on live video streamed by religious extremists. Nothing terribly original so far for Elysium. Only this time, the man doesn’t die.


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Veil of Mystery

Free
Science Fiction, Suspense, Novella
4.3★ 300+ ratings

When the lower orbital satellites stop working, everyone is plunged into an apocalyptic world. Isolated in the small Texas town of Alpine, Keme Lopez needs to prepare his family. The first few days will determine who lives or who dies.


Amazon

Rocket Fuel Pee: Man of Ruin

Free
Science Fiction, Humor
4.2★ 50+ ratings

Would you call ‘pee of destruction’ a superpower? Then you’ve never had to deal with it. For Dave Smith, it’s the end of his world. You see, it burns through everything it touches. Boy does it burn.


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Lambs: World Gone Down

Free
Science Fiction, Action
4.0★ 75+ ratings

On a warm summer’s afternoon, the power goes down, bombs fall from the sky, and monstrous creatures begin stalking the streets. The survivors must come to terms with this devastated new world.


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Grail Protocol

Free
Science Fiction, Thriller
4.2★ 50+ ratings

What happens when an old man suddenly returns to youthful vigor while his wife remains old? Or when a grandmother is suddenly younger than her grandchild? Immortality comes with a price tag.


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Woman Beneath the Ice

Free
Science Fiction, Suspense
4.0★ 60+ ratings

Aboard a spaceship leaving Earth for the wild planet of Cerulean, Evita begins a desperate escape plan. But a nosy engineer and an explosion in the ship’s engine room have her fall into a deadly game for control of the new planet.


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Murder on the Intergalactic Highway

Free
Science Fiction, Mystery
4.1★ 200+ ratings

For Murdina, acceptance at the Academy means one last chance at her dream of becoming a diplomat for the Union of Free Worlds. For Shackleton, it represents his last chance at service.

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Dhata Mays

Free
Science Fiction, Mystery
4.0★ 100+ ratings

After a devastating war forced humans to rely on synths for survival, the two have learned to coexist peacefully. Until now. And detective Dhata Mays must find a way to protect them all.

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Ambush in the Sargon Straits

Free
Science Fiction, Novella
4.2★ 200+ ratings

It should have been a simple extraction. Elodie Cyr was to ensure it went smoothly. But the intelligence geeks’ estimates were wrong and Ell and the team are now in for the fight of their lives.


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Corn, Cows, and the Apocalypse

Free
Science Fiction, Fantasy
4.2★ 300+ ratings

After the infamous and greatly exaggerated apocalypse takes the souls of nearly half the world’s population, Lenore is left to figure out life beyond the banality of her previously humble existence.


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AMP Messenger

Free
Science Fiction, Action
4.2★ 2500+ ratings

In a distant galaxy, Humans are on the run. Trapped on an immense station with limited resources, our only option has been to flee. Years of peace are over. War is again coming to the Grid.


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