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.

Programmed to Please

Free
Science Fiction, Romance
4.1★ 200+ ratings

Human police agent Jai Turner goes undercover as a Beautiful Dolls robot to bring down the planet’s most notorious arms dealer, Marque Callex. But neither Jai nor Marque are what they seem.


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Patriot Son

Free
Science Fiction, Thriller
4.1★ 200+ ratings

Three nations conspire to take over America and set the stage for WWIII on the shores of the US.


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The Tube Riders: Underground

Free
Science Fiction, Action
4.2★ 1000+ ratings

Marta Banks is a girl with an identity. She is a Tube Rider, a girl who risks death every day in abandoned underground stations in the dystopian chaos of London in 2075.


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The Red Hourglass

Free
Science Fiction, Adventure
4.2★ 100+ ratings

Thomas is a runaway slave on a barren continent. He’ll do whatever it takes to seize his freedom and protect his sister, Mia. Alchemy made them slaves. Only their magic can free them.


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The Tinkerer’s Daughter

Free
Science Fiction, Teen
4.3★ 4000+ ratings

Breeze is a young elven girl left in the care of a strange old Tinkerer. Under his care, she learns that the world is not as simple or safe as anyone would like it to be.

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Man, True Man

Free
Science Fiction, Adventure
4.1★ 200+ ratings

After a spaceship crashes into Tonath, the lone occupant survives and fights his way to sunlit part of the planet. When more strangers arrive, can they save Tonath from a thousand years of burning?


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Forager

Free
Science Fiction, Suspense
4.2★ 1000+ ratings

Ethan must keep his mutation a secret while uncovering a girl’s true intentions and trying to save a town from vile Skel savages. But why do the Skel suddenly possess advanced technology – who is backing them, and why?

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Fire Ant

Free
Science Fiction, Adventure
4.5★ 2000+ ratings

Floribeth, an Off-Planet Worker, has to convince the powers that be that a very real danger to humanity is lying in wait out there in deep space.

Amazon

Sleep Diet

Free
Science Fiction, Thriller
4.9★ 10+ ratings

Viotech’s revolutionary Sleep Diet promises the impossible: lose weight, shed bad habits, and wake up the best version of yourself—no effort required. No hunger. No exercise. No side effects. No catch?


Amazon

Ship’s Boy

Free
Science Fiction, Novella
4.1★ 200+ ratings

David Birkenhead might only be twelve years old, but his entire life is already laid out for him. Then the ships of the Boyen Emperor arrive on David’s homeworld and nothing will ever be the same.


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Nyssa Glass

Free
Science Fiction, Teen, Novella
4.3★ 100+ ratings

Nyssa Glass is faced with a heartrending decision: sacrifice everything or become the very thing she’s desperate to escape.

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Defenders of the Rim: Beginnings

Free
Science Fiction, Action
4.3★ 1000+ ratings

The Galactic Empire is in Grave Danger and unaware of what’s coming! Can a group of young heroes find a way to save the galaxy and survive?


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Balanced on the Blade’s Edge

Free
Science Fiction, Action
4.4★ 5000+ ratings

Colonel Ridge Zirkander isn’t the model of military professionalism and findsunder new orders: take command of a remote prison mine in the inhospitable Ice Blades Mountains.

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Starshine

Free
Science Fiction, Adventure
4.3★ 2500+ ratings

An epic tale of galaxy-spanning adventure, political conspiracy, alien invasion, interstellar war, space exploration, intrigue and romance.


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Turning Point

Free
Science Fiction, Action
4.3★ 100+ ratings

They won the Metacorporate War. Now comes the hard part: Capture or kill the architect of the war.


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Dead Lake

Free
Science Fiction, Suspense
4.4★ 30+ ratings

Tricky sets out to track down thieves and retrieve a stolen obsidian, but it’s about more than obsidian. It’s about uncovering the truth behind her mother’s murder and seeking justice.

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