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.

The Solid-State Shuffle

Free
Science Fiction, Suspense
4.1★ 750+ ratings

Thrust into a high-stakes game of subterfuge and deception, Isa and her crew must scramble to unravel the mystery of what it is they stole while forces move against them.


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War Begins

Free
Science Fiction, Adventure
4.2★ 500+ ratings

An ancient race left a gift inside Diana’s mind, and it will now rise. The greatest enemy the galaxy has ever known is here. The war will begin.


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Forbidden the Stars

Free
Science Fiction
4.0★ 1000+ ratings

An expatriate seizes an opportunity to wrest control of outer space. The secret to faster-than-light speed is up for grabs, and the race for interstellar space begins!


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Soul Forged

Free
Romance, Science Fiction
4.4★ 50+ ratings

Ori agreed to travel with aliens who need women, not to abduction, life/death battles, & escaping with an arrogant man. With a bounty on her head, happily-ever-after isn’t all flowers & pink sunshine.


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Edge of the Breach

Free
Science Fiction
4.4★ 200+ ratings

We all become monsters at the edge of the breach. In a post-apocalyptic world where season of birth determines power, interrealm war beckons two lost and fated souls.


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When You Had Power

Free
Science Fiction, Suspense
4.1★ 500+ ratings

An unscheduled power outage reveals that something isn’t right on Power Island One, but every step power engineer Lucía Ramirez takes to solve it, someone else gets there first—and they’re determined to make her unsee what she’s seen. 


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Star Nomad

Free
Science Fiction, Adventure
4.4★ 5000+ ratings

Alisa has more problems than she can count, but she can’t let cyborgs, savages, or ancient malfunctioning ships stand in her way. If she does, she’ll never see her daughter again.

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Three Days in Undead Shoes

Free
Science Fiction, Action
4.4★ 750+ ratings

Jane Finch wishes her problems ended with a bad commute and no coffee. But when she and her beloved Great Dane, Schrodinger, emerge from a locked room they discover a city changed for the undead.


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The Eye of the Gods

Free
Science Fiction, Adventure
4.2★ 400+ ratings

Vivian Bond and Special Commander Jake Trace are thrown together in a fight for the Milky Way and beyond as an ancient power rises once more.


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Monte Vista Village

Free
Science Fiction, Suspense
4.2★ 300+ ratings

Laura survived the global nuclear war. When she walked out into the devastated landscape, she found something worse than zombies. The real enemy is what’s left of the desperate earth.

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The Debt Collector: LIRIUM

Free
Science Fiction, Action
4.2★ 300+ ratings

Lirium plays the part of the grim reaper well, with his dark trenchcoat and jackboots—he’s just in it for his cut, ten percent of the life energy he collects before he transfers it to the deserving.


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Tucker vs. the Apocalypse

Free
Science Fiction
4.4★ 200+ ratings

Household pet dog Tucker is thrust into an apocalyptic world when not only his own ‘master’, but all of humanity, are stricken with a deadly plague.

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All Your Lives Belong To Us 

Free
Science Fiction, Humor
4.2★ 10+ ratings

Lemon’s masterpiece Elysium, a massive multiplayer video game, is released with dismal sales numbers. Now, Nick believes he’s inside his dead wife’s video game. Only, it’s just a game… right?


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Of Cinder and Bone

Free
Science Fiction, Suspense
4.3★ 500+ ratings

Jack and Kamala brave the dangerous streets of Tokyo to steal their dragon back in a race against time before the world is taken over by mutated, bloodthirsty monsters that will raze it to ashes.

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Tiberius Found

Free
Science Fiction, Teen, Thriller
4.3★ 200+ ratings

Daniel Henstock thinks he’s an ordinary kid but on his sixteenth birthday, his world is turned upside down. He realizes he is the world’s first one-hundred-percent genetically-engineered human.


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Concensus

Free
Science Fiction, Suspense
4.4★ 100+ ratings

Ena Waite can’t help challenging the flawed mindset of her family and friends. But in Esh, truth is determined by a public opinion network. Social rating is the currency. Fitting in is essential.


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