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.

Under Falling Skies

Free
Science Fiction, Teen
4.2★ 200+ ratings

A chance encounter with a stranger from the other side of the galaxy threatens to derail Scout’s life. The entire galaxy awaits her, if she survives the next four days.


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Transient

Free
Science Fiction
4.0★ 750+ ratings

In a dark and distant future, death is obsolete. But the fates of billions hang in the balance. When the axe falls, Jonas must choose between his family and his species.


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Resistance

Free
Science Fiction, Action
4.2★ 100+ ratings

Her remote forest community isn’t safe anymore. Driving damaged roads to a city she hasn’t seen for six years, Jac uncovers disturbing truths about those controlling their lives


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Forgotten

Free
Science Fiction, Supernatural
4.3★ 2000+ ratings

While struggling to regain her memory, Lena explores her extrasensory powers. As she tries to figure out who and what she is, she makes a frightening discovery.


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The Running Game

Free
Science Fiction, Adventure
4.2★ 300+ ratings

War-torn London sets the stage for Rachel, a doctor with hidden telekinetic powers. With the help of dangerous and dubious allies, can she turn the game around and save herself?

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Mind Machines

Free
Science Fiction
4.2★ 1000+ ratings

Plunged into a criminal underworld darker than anything he could’ve imagined, more-than-human Mike’s life-saving brainocytes might be the death of him.

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Into the End

Free
Science Fiction, Suspense
4.0★ 1000+ ratings

As Rachel hopes the things she’s done in her past as a strategical psychologist hasn’t played a role in America’s demise, her sister Brenda sets out to find her.


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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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Surviving The Evacuation: London

Free
Science Fiction, Suspense
4.1★ 10000+ ratings

On his journey out into the wasteland that once was England, Bill will ultimately discover the horrific truth about the outbreak and a decades old conspiracy.


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Descent into the Void

Free
Science Fiction, Adventure
4.0★ 500+ ratings

Responsible for the development of the Union’s most secretive weapon system, Stiler and his ragtag crew of Marines have one chance to turn the tide of the war.


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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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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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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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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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Tagrale

Free
Science Fiction, Adventure
4.2★ 100+ ratings

For hundreds of generations, scientists have failed to reactivate the Tagrale to escape the Sironus system. Jenna dreams of being the one to unlock the puzzle, but if she does, she’ll be executed.


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Small Beginnings

Free
Science Fiction, Novella
4.3★ 50+ 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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