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.

Solar Storm

Free
Science Fiction, Adventure
4.1★ 1000+ ratings

He had the perfect life as a small-town librarian, but the sun had other plans and sent a coronal mass ejection as a wedding anniversary present. In a world where electricity is a thing of the past, can there be any hope for the future?


Amazon

Insight

Free
Science Fiction, Novella
4.5★ 100+ ratings

Detective Reese Parker left behind a violent past in Welfare Colony 6 and now works with the New York Enforcer Division to make certain their society never faces another economic and nuclear Breakdown.


Amazon

First Strike

Free
Science Fiction, Adventure
4.0★ 200+ ratings

Half-man, half-machine, it’s taken Dale Simpson a long time to come to terms with the accident that almost killed him and the science experiment that saved his life instead.


Amazon

Invasion

Free
Science Fiction
4.0★ 200+ ratings

An invasion is what retired Marine Colby Edison calls it when his farm is overrun by alien plants. But Colby has skills other farmers lack on the newly terraformed agricultural world of Vasquez.


Amazon

Memoirs of a Time Traveler

Free
Science Fiction, Adventure
4.1★ 2500+ ratings

Archaeologist David Preston comes into possession of a baseball supposedly signed by the legendary Ty Cobb in 1908. Except the ball tests out to be an impossible paradox for alinear timeline.

Amazon

When We Were Human

Free
Science Fiction, Teen
4.3★ 100+ ratings

They came four years ago. Invaded our planet, rounded us up, decimated the human race. We fought back, and some even say we won, but they’re wrong.

Amazon

Free-Wrench

Free
Science Fiction, Action
4.4★ 1000+ ratings

Nita’s mother has lost her livelihood and perhaps soon her life to a terrible disease. Nita resolves to leave the safety of her home and do whatever it takes to find a cure.

Amazon

Wanted

Free
Science Fiction, Adventure
4.2★ 400+ ratings

Josh Gunn detests space pirates. He hunts them down and brings them to justice – one way or another. When he and his android partner Cherry Kang close in on one of the worst, the fireworks start.


Amazon

Enemy Mine

Free
Fantasy, Novella
4.2★ 20+ ratings

Jessie Richter has kept her childhood secret safe and tucked away for over four long years, but she is caught by Military Contractors who sense there is more to Jessie than meets the eye.

Amazon

Trixie & Me

Free
Science Fiction, Novella
4.3★ 200+ ratings

Trixie and Berry are trapped on an alien spaceship. Berry can’t move, but he seems to understand what’s going on. Trixie is confused and has no recollection of how they ended up in an alien warship.


Amazon

Dinosaur Wars: Earthfall

Free
Science Fiction, Action
4.1★ 750+ ratings

Wildlife biologist Chase Armstrong and rancher’s daughter Kit Daniels find themselves stuck in a battle between military forces and intelligent dinosaurs returning to Earth after 66 million years.


Amazon

The Legend of the Bloodstone

Free
Science Fiction, Romance
4.3★ 2500+ ratings

A modern day woman, Maggie is thrust back in time where she is captured by Winn, a warrior who is torn between his duty to kill her and his desire to keep her.


Amazon

Pawns

Free
Science Fiction, Action
4.4★ 100+ ratings

A powerful alien race has invaded Earth, wiping out half of the human population. In a hidden base under the Sahara Desert, a team of scientists works to mount a resistance against the invaders.


Amazon

The Hidden Survivor

Free
Science Fiction, Action
4.1★ 1000+ ratings

An impending solar storm threatens the earth, but governing bodies have opted to keep that information close to the vest. Soon, the storm devastates the electrical grids and leaves the world in chaos.


Amazon

The Helavite War

Free
Science Fiction, Adventure
4.1★ 200+ ratings

Jake is a human mercenary looking for a quiet place to rest when his Protect Dar-dolf attacks the last living Henu, Arr. Feeling responsible, Jake stays on to care for the blue-eyed alien.


Amazon

It Ain’t Over…

Free
Science Fiction, Adventure
4.6★ 5000+ ratings

Buy a planet and disappear. That’s all Cole wanted. But when Cole saves a castaway and stumbles into a crew of his own, he starts down a path that will force him to choose.


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