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.

One If

Free
Science Fiction, Teen
4.2★ 100+ ratings

When Parker Kittredge slips and plunges 18 stories to the street, she awakens on a completely different planet, one destroyed by climate change and locked in a civil war.


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Between Mountain and Sea

Free
Science Fiction, Adventure
4.4★ 1000+ ratings

A descendant of one of the Founding Families who left a dying Earth and now rule New Eden, Mei will discover secrets that will forever change her own destiny.


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The Ancient Gate

Free
Science Fiction
3.9★ 10+ ratings

Desa and Anna must leave their comfortable lives to embark on a journey across dimensions where the two will face an enemy that threatens to destroy both of their worlds.


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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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Dragon’s Covenant

Free
Science Fiction, Adventure
4.3★ 300+ ratings

The Warlord has always eluded him, so when Talon Rift learns that the Warlord might have help from inside the Alliance government, he vows that he will stop at nothing to bring them to justice.


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28 Days

Free
Science Fiction
3.8★ 40+ ratings

Emma Cartwright races against time to find work in a society where compliance is mandatory and freedom is scarce. When her son Jack is arrested, Emma has to take drastic measures.


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Oblivion’s Cloak

Free
Science Fiction, Action
4.3★ 100+ ratings

A shadowy new faction is looking for Earth’s last survivor. They are a mystery to everyone but Shaara. Hard as she’s tried to forget, she knows them all too well. Which means she’s the only one who can stop them.


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Dusk of Humanity

Free
Science Fiction, Suspense
4.4★ 200+ ratings

Dr. Egan never thought life after the apocalypse would be so dull. Until the day she finds an infected man in her operating room with symptoms she’s never seen before. And it’s spreading.


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Peyton 313

Free
Science Fiction, Suspense
4.3★ 1000+ ratings

Her cybernetic studies in genetic engineering were supposed to make the world better and Dr. Kyra Winters certainly never meant for her work to be used for anything evil.

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Midnight Wings

Free
Science Fiction, Adventure
4.3★ 500+ ratings

In El’s fantasies, she pilots a fighter jet for the intergalactic fleet. In reality, she’s a mechanic whose social ranking keeps her as hired help to her stepmother. An exciting science fiction retelling of Cinderella.

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Bottle Born Blues

Free
Science Fiction
3.8★ 30+ ratings

An artificial life form has knowledge of a plot to overthrow the government, making him a target for both the plotters and the security forces. He will have to take desperate measures to save those he loves.

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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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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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