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.

Monster of the Dark

Free
Science Fiction, Action
4.2★ 100+ ratings

Carmen Grey is taken to an underground facility for Clairvoyants, stripped of her name and identity, and fashioned into something lethal. Yet her ultimate battle won’t be to save her life but to keep her soul.


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The Necklace: The Dusky Club, June 1962

Free
Romance, Science Fiction
4.1★ 300+ ratings

What if you could travel back into the past to meet the man of your dreams? When Susan does just that, she will learn something important about James and about herself.

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Time Ship

Free
Thriller, Adventure
4.1★ 1000+ ratings

Terrorists have taken over a holiday resort in the Caribbean and are holding everyone for ransom. What dangerous secret must be covered up at all costs to protect the future?


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The Dark of Light

Free
Science Fiction, Adventure
4.5★ 1000+ ratings

For Aurora Hawke, protecting the secret of her half-human heritage has been a lifelong challenge. Taking command of her own starshiphas been her dream. Failing at both is her nightmare.


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Miltan Epsilon

Free
Science Fiction
4.2★ 50+ ratings

Jazz Healy finds herself befriending stowaways, fighting off tech cultists, and hunting down an assassin, all while bonding with a gene-splice kitten and endeavoring to keep her criminal kingpin mother at arm’s length.

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Into Twilight

Free
Science Fiction, Mystery
4.3★ 500+ ratings

Korea, 22nd Century. Surrender isn’t in Stefan Mendoza’s DNA. So when a traitor betrays his black-ops team, he alone pushes through the torture and escapes with revenge burning in his mind.


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Fang

Free
Steamy Romance, Science Fiction
4.2★ 400+ ratings

When vampire dentist Dr Fang (yes, really) gets invited to go to the Intergalactic Dating Agency’s speed dating event as his friend’s wingman, he can’t refuse.


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The Rare

Free
Science Fiction
4.2★ 50+ ratings

Olivia hates being different. But when she starts exploring the world, she realizes everything she thought she knew was a lie.

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The Thought Readers

Free
Science Fiction
4.2★ 2500+ ratings

Everyone thinks I’m a genius. I finished Harvard at eighteen and now make crazy money at a hedge fund. But that’s not because I’m unusually smart or hard-working. It’s because I cheat.


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Invincible

Free
Science Fiction, Suspense
4.4★ 200+ ratings

Ryan’s not like other people. He has a genetic variant that slows aging, regenerates cells, and makes him impervious to toxins. He carries within him a virtual miracle cure that could save lives.


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Onslaught

Free
Science Fiction
4.1★ 300+ ratings

When mutants from civilization’s end come roaring back from exile, telepath Langston Wheeler must confront assassination, interstellar intrigue, and a woman he can’t resist.


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The Blind Spot

Free
Science Fiction, Action
4.2★ 400+ ratings

With the best hacker in the city on her side, Marcie gets to work… To avoid total annihilation, she will have to betray everyone she loves, starting with her father… And even then, her chances of success are slim.

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Displaced

FEATURED FREE BOOK
Science Fiction, Teen
4.3★ 100+ ratings

When Bea Cooper is unexpectedly transported to another place and time, it will take everything in her power to find a way back home, especially with an evil adversary trying to stop her from ever returning.

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Frontier Justice – The Survivalist

Free
Science Fiction, Action
4.3★ 7500+ ratings

The Superpox-99 virus has wiped out nearly the entire human race. To stay alive, U.S. Deputy Marshal Mason Raines must forage for food, water, and gasoline while outgunning opportunists.


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Adopted by Aliens

Free
Science Fiction, Teen
4.0★ 500+ ratings

One million years in the future, young human Antaska thinks that she’s applying for a job working for aliens in outer space. Unknown to her, the gigantic green aliens want earthlings as pets.


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Quantum Tangle

Free
Science Fiction, Adventure
4.3★ 2500+ ratings

Dropping out of sub-space into the wrong galactic sector, Seth Kada wakes up with a headache and an extraordinary alien aboard his ship.


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