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.

Given

Free
Steamy Romance, Science Fiction
4.3★ 1000+ ratings

Davien will do whatever it takes to get back into space. The last thing he needs is a smart-mouthed and sexy thief whose scent drives him wild.

Amazon

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.


Amazon

Longshot

Free
Science Fiction
3.8★ 500+ ratings

What’s John to do when the winning streak he’s only ever dreamed about hits just as aliens invade and it looks like the world is coming to an end?

Amazon

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.


Amazon

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.

Amazon

Mutation

Free
Science Fiction, Action
4.5★ 400+ ratings

Mutation is the first book in a fast-moving, action-filled series that turns the zombie apocalypse on its head. If you like thrilling, original sci-fi, you’ll love Mutation.

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Three Aliens Walk Into A Bar

Free
Science Fiction, Humor
3.9★ 75+ ratings

Lake Peculiar, Minnesota, is a small town that has weathered its share of disasters before and is sure the alien invasion won’t mean anything to them… until three aliens arrive in the center of town.


Amazon

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.

Amazon

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.

Amazon

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.


Amazon

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?


Amazon

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.


Amazon

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.

Amazon

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.

Amazon

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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