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.

Station

Free
Science Fiction,
4.2★ 50+ ratings

What is Station? A second chance? A nocturnal paradise? Or something else? When grief-stricken Marlin’s life refuses to end despite his best efforts, he unwittingly earns an invitation to Station.


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ARMS War for Eden

Free
Science Fiction, Action
4.2★ 1000+ ratings

Harris Gruberg and Tawnish Freely, bioengineered Humans, were bred for making war. After training for and fighting in it their entire lives, they find themselves expelled from the military.


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Welcome to Gale City

Free
Science Fiction,
3.9★ 20+ ratings

Beware the ones with glowing eyes! Teo remembers his father’s final warning before being sent to death row. He resolves to leave his past behind—until the night he comes across a man whose eyes glow.


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Moonchild

Free
Science Fiction, Teen
4.3★ 300+ ratings

Scarlett Moon has one goal: Survive. When her best friend is arrested and returned to the mines, Scarlett sets out on a mission to save her friend.


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Fractured Memories

Free
Science Fiction, Teen
4.4★ 100+ ratings

Tainted crops killed millions. The Skinnies ate the rest. Sixteen-year-old Wendy never knew the world before the Starvation. She’s had to put her trust in her knives, and her confidence in her fists.

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Sun Burn

Free
Science Fiction, Novella, Action
4.2★ 100+ ratings

A civilization-ending storm kills billions overnight. One family is torn apart amid the chaos, struggling to stay alive. Daylight has become their ultimate enemy.


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Small Beginnings

Free
Science Fiction, Novella
4.3★ 75+ ratings

When your very existence is treason, employment opportunities are thin. But when one of the biggest crime lords in the city makes The Pan an offer, it’s hard to know if he should accept or refuse.


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Stepping Stones to Space

Free
Science Fiction, Suspense
4.0★ 50+ ratings

Earth is a fragile haven. But when Dr. Elizabeth Reacher tries to make humans a multi-planetary species, will her quest to expand humanity’s reach further into the cosmos prove fatal?


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Leviticus

Free
Science Fiction, Adventure
4.2★ 75+ ratings

Leviticus is a gifted engineer, part of a team of graduate students who have developed a powerful new technology. He will play a pivotal role in the coming cataclysm.

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The Network

Free
Science Fiction, Action
4.4★ 500+ ratings

Detective Constable Sean McMillan finds himself pitting his wits against his ever more resourceful and powerful enemies. It is only a matter of time before an inevitable showdown and only one will win.

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Clouds of Venus

Free
Science Fiction, Adventure
4.0★ 1000+ ratings

Dale Kinmont is a college student in post-catastrophe America. He’s lucky; he lives in one of the walled cities for the nation’s elite. Life is pleasant until he’s framed for murder.


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Quantum Cheeseburger

Free
Science Fiction, Adventure
4.3★ 100+ ratings

Driving his vintage Jeep down a lonely highway in the New Mexico desert, Chris, an ordinary guy with a horrible boss, makes a terrible mistake. Now military, mercenaries, and aliens are hunting him.

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Symbiosis

Free
Science Fiction
4.0★ 1000+ ratings

Pursuing an escaped alien, Justice Keeper Anna Lenai discovers her ancestors’ lost homeworld.

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The Kalis Experiments

Free
Science Fiction, Adventure
4.1★ 100+ ratings

Syrina, a Kalis master of disguise, embarks on a perilous mission in the steam-powered city of Fom where she learns of a machine that could end civilization a second time.


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Oblivion Threshold

Free
Science Fiction, Adventure
4.2★ 1000+ ratings

It isn’t a war—it’s a massacre. Mindless mechanical aliens are destroying everything in their path. And their path is heading straight for Earth.

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Chaos Zone

Free
Science Fiction
4.2★ 100+ ratings

When Sloane sets her sights on a bounty with a reward that will solve her problems, the Commander of the Galactic Fleet shows up in pursuit of the same man. Tangled in a web of galactic politics, she won’t let her prize go.

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