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 100 free Kindle science fiction books.

Close Liaisons

Free
Science Fiction, Paranormal
4.1★ 5000+ ratings

For college student Mia Stalis, the invaders—the beautiful, mysterious, vampiric Krinar—are only stories on the news. None of it concerns her until she catches Korum’s eye.


Amazon

Reaper’s Run

Free
Science Fiction, Action
4.3★ 2000+ ratings

When Marine Sergeant Repeth’s blown-off legs begin to regenerate, she thinks it’s a miracle. But the breakthrough is exactly what the government desperately wants to quash.

Amazon

Lucifer’s Odyssey

Free
Epic Fantasy, Supernatural
4.0★ 150+ ratings

Imagine a war between angels and demons that extends across our universe. Now, think bigger. That’s Lucifer’s Odyssey.

Amazon

Rescued by Qaiyaan

Free
Science Fiction, Steamy Romance
4.2★ 1000+ ratings

With heart-pounding action, scorching romance, and love that defies all boundaries, Qaiyaan and Lisa’s story is a must-read for fans of alien romance.

Amazon

Patriot Son

Free
Science Fiction, Action
4.1★ 200+ ratings

Three nations conspire to take over America and set the stage for WWIII on the shores of the US.


Amazon

Forager

Free
Science Fiction, Horror
4.2★ 1500+ ratings

Keeping his mutation a secret, uncovering a girl’s true intentions, and trying to save a town from Skel savages all vie for Ethan’s attention.

Amazon

The Dark Rift

Free
Science Fiction, Supernatural
4.1★ 400+ ratings

Strange events lead archaeologist Gabriel Parker to a relic, and to the only person on earth who can help him unravel its apocalyptic mysteries.

Amazon

The Alpha Plague 3

Free
Science Fiction, Suspense
4.4★ 300+ ratings

After having rescued his ex-wife from the diseased in Summit City, Rhys races to meet his son only to discover he isn’t there. But there’s hope. The boy has left a trail.

Amazon

Brothers in Exile

Free
Science Fiction, Adventure
3.9★ 750+ ratings

To wake a lost girl from the ice, two brothers must face an empire.

Amazon

Warpworld

Free
Science Fiction, Adventure
4.4★ 400+ ratings

An ambitious explorer. A rebellious captain. Together, they’ll change the course of history…


Amazon

War Bunny

Free
Fantasy, Teen
4.3★ 300+ ratings

In a post-apocalyptic world where humans are extinct and animals thrive, a young rabbit starts to wonder why rabbits must accept their status as prey animals.


Amazon

Man, True Man

Free
Science Fiction, Adventure
4.5★ 50+ ratings

Will the Teacher be able to recognize True Man and True Foe in time to save Tonath from a thousand years of burning?


Amazon

Fire Ant

Free
Science Fiction, Adventure
4.5★ 2000+ ratings

Floribeth, an Off-Planet Worker, has to convince the powers that be that a very real danger to humanity is lying in wait out there in deep space.

Amazon

Killing Time in Georgia

Free
Mystery, Historical
4.4★ 300+ 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.


Amazon

The Tinkerer’s Daughter

Free
Science Fiction, Teen
4.3★ 4000+ ratings

Breeze is a young elven girl left in the care of a strange old Tinkerer. Under his care, she learns that the world is not as simple or safe as anyone would like it to be.

Amazon

Starshine

Free
Science Fiction, Adventure
4.3★ 2500+ ratings

An epic tale of galaxy-spanning adventure, political conspiracy, alien invasion, interstellar war, space exploration, intrigue and romance.


Amazon