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.

Emerging Storm

Free
Science Fiction, Adventure
4.0★ 200+ ratings

Celeste never wanted anyone to know her secret. And, she never dreamed it would lead her to become the Grekk Empire’s top envoy. Now, the last human serves humanity’s greatest enemy.

Amazon

Origins: Zombie Games

Free
Science Fiction, Adventure
4.2★ 1000+ ratings

Seventeen-year-old Cassandra Wild thought that living in the chaos of her mother’s home and her feelings for Bryce were a struggle until the whole world turned upside down.

Amazon

Given

Free
Steamy Romance, Science Fiction
4.3★ 1000+ ratings

Davien will do whatever it takes to get back into space. The last thing he needs is a smart-mouthed and sexy thief whose scent drives him wild.

Amazon

Surviving The Evacuation: Wasteland

Free
Science Fiction, Suspense
4.4★ 5000+ ratings

Four months after the outbreak, Bill Wright found safety in southern England. He believes he knows the origin of the conspiracy that created the undead, but he needs answers.


Amazon

The Green Knight

Free
Science Fiction, Adventure
4.0★ 750+ ratings

Near the border between two kingdoms, a vessel full of innocent passengers is destroyed. While the extent of the impending retaliation is unknown, its inevitability is not. Galactic war is approaching.


Amazon

The Chaos Job

Free
Science Fiction, Adventure
4.5★ 75+ ratings

After 20 years of fighting the border wars, the damaged AI on Sil’s farm herds sheep into symbols visible from orbit. Not knowing how to channel the chaos elsewhere, she enlists the help of a former enemy soldier.

Amazon

The Sea of Storms

Free
Science Fiction, Adventure
4.1★ 750+ ratings

A ruthless invader is forcing the native Kelanni population to mine a substance from another universe with infinitely destructive power. Only a ragtag group stands in the way.


Amazon

Girl Fights Back

Free
Thriller, Science Fiction
4.4★ 1000+ ratings

Emily Kane has gone missing and the world’s spy agencies are determined to find her. They think she’s been genetically modified as a human weapon. Now, she’ll need all her skills to see tomorrow.


Amazon

Yesterday’s Thief

Free
Science Fiction, Thriller
4.4★ 1500+ ratings

When a woman materializes in midair during a televised baseball game, private detective Eric Beckman vows to figure out where—or when—she came from. And if he can’t unlock her secrets, the world will spiral into chaos.


Amazon

Endless Chaos

Free
Science Fiction, Action
4.1★ 50+ ratings

When the Coalition is swept up in a deadly game, Death Spiral, only one cadet can save them. Sharon has a mind honed to play the most brutal game of all and she has to win.

Amazon

Roy

Free
Science Fiction, Humor
4.0★ 750+ ratings

This is the story of Roy, the architect of an epic crisis that paralyzed the largest space station in the universe. The lunacy behind it remained a mystery. Until now.


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

The 28th Gate

Free
Science Fiction, Adventure
4.3★ 1000+ ratings

When he accepted the job on a backwater planet, Hunter thought it would be easy to track down a missing researcher. But when he finds her, he realizes all is not as he was told.


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

Free Falling

Free
Thriller, Science Fiction
4.1★ 2500+ ratings

A fun family vacation turns into an apocalyptic nightmare when a couple and their young son find themselves trapped in the Irish countryside during an international crisis.


Amazon

The Last Orphans

Free
Science Fiction, Teen
4.1★ 2500+ ratings

Filled with cinematic science fiction action, end of the world apocalyptic events, and heart pounding thrills, The Last Orpans will leave you enthralled from beginning to end. 

Amazon