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.

Fallen Star

Free
Thriller, Action
4.2★ 2500+ ratings

Captain Grant and Sergeant Maclean are drawn into a clandestine world that deals with unusual encounters. It soon becomes apparent that something dangerous is going on and not everyone is as they appear to be.

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Max and the Multiverse

Free
Science Fiction, Humor
4.1★ 1000+ ratings

Thanks to a bizarre mishap, Max has started shifting between parallel universes whenever he sleeps. Soon, he and his cyborg cat are entangled in an intergalactic conflict.


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Transmission

Free
Science Fiction, Action
4.0★ 2500+ ratings

A 13 year old boy, dying of a rare brain disease, is the only one able to hear and decode signals from outer space. SETI confirms it is a real signal.

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Dead Quarantine

Free
Science Fiction, Teen
4.3★ 400+ ratings

Unbeknownst to two teens, a flu pandemic rages over the world. A flu that turns its victims into the walking dead.

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Taken

Free
Steamy Romance, Science Fiction
4.3★ 1000+ ratings

Jayne is a feisty human lawyer plucked from Earth by a beast of an alien captor, Rexitor. “All enemies of the Empire must die. But not her, she is mine to claim…”


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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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Inceptio

Free
Mystery, Science Fiction
4.2★ 300+ ratings

New Yorker Karen Brown is running for her life. She makes a snap decision to flee to Roma Nova – her dead mother’s homeland, and last remnant of the Roman Empire in the 21st century.


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The Alpha Plague 2

Free
Science Fiction, Action
4.4★ 400+ ratings

Equipped with nothing but a baseball bat and his wits, Rhys enters Summit City for a second time. His son wants his Mummy, and Rhys is the only one who can save her.


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Her Cyborg

Free
Romance, Science Fiction
4.1★ 750+ ratings

MedAct is the company that can make all your dreams come true! Just give them a call and let them create the perfect man for you. But remember, you can never give him up. It will kill him, literally.


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Killing Time in Georgia

Free
Mystery, Historical
4.4★ 500+ ratings

Police dispatcher Georgia Belle is thrust into the 1920s. At the center of a sinister mystery with personal ties to her future, she and a detective must find the killer.


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Disruptive Shock

Free
Science Fiction, Thriller
4.2★ 750+ ratings

A yearly trek to the carnival with his young sons is the highlight of Ian Carrol’s life. What begins as another opportunity to build lifelong memories quickly fades to black by the time the sun sets.

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Betrayal

Free
Science Fiction, Adventure
4.2★ 2000+ ratings

Captain Shepperd is about to learn that you can’t hide from the sins of your past, especially when the priceless synthetic stowaway on his ship is programmed to kill.


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The Necklace: The Dusky Club, June 1962

Free
Romance, Science Fiction
4.2★ 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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Earthbound

Free
Science Fiction, Historical
4.2★ 300+ ratings

Marooned in the 19th century US West, an alien must survive and return to his homeworld to destroy his mortal enemies and avenge his people.


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Quantum Incident

Free
Science Fiction, Novella
4.3★ 1000+ ratings

The long sought Higgs boson has been discovered at the Large Hadron Collider in Geneva. Scientists rejoice in the confirmation of quantum theory, but a reporter believes they may be hiding something.


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The Emperor’s Edge

Free
Science Fiction, Epic Fantasy
4.4★ 2500+ ratings

The empire’s most notorious assassin is in town and Imperial law enforcer Amaranthe Lokdon’s superiors order her to hunt him down. Either they have an unprecedented belief in her skills… or someone wants her dead.

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