Best Free Sci Fi Books of 2026

Here are the 25 most popular free Sci Fi ebooks on Free-eBooks.net for 2026, ranked by reader rating and download volume — every title is free to download.

Last updated: August 15, 2025

1 Agartha's Castaway

Agartha's Castaway

Chrissy Peebles | Sci-fi Fantasy

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Genres for this novelette series: fantasy/young adult/adventure/sci-fi. See the book trailer below for "The Trapped in the Hollow Earth Novelette Series" http://youtu.be/viwT0M8Ms_g *** The dream vacation that might just turn deadly... Seventeen-year-old Casey Smith can't wait to embark on her summer vacation, not least because...

2 Assiniboin Girl

Assiniboin Girl

Kathi Wallace | Sci-fi Fantasy

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When Mary Two Dogs' parents died, she went to live with her Aunt Janet, a woman she barely knew. Her parents had been musicians, and they traveled a lot, but New York was home. Now, she's living in a Podunk, backward, Georgia town with her aunt, an FBI agent working undercover to solve a string of racially motivated murders. But it gets worse...

3 The Kingdom

The Kingdom

Guy Stanton III | Sci-fi Fantasy

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The sands blow hollowly across the plains of time. Unseen by man an army was on the move, an army of darkness... Slowly over the course of centuries the truth has been eroded away within the courts of men, until few yet stand for the ways of El Elyon, the Creator of the beginning and He who foreknew that one day the end would come... Ayenathurim...

4 The Secret Cave

The Secret Cave

Ruth Reins | Sci-fi Fantasy

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A compelling time travelling romance novel. Shirley meets, falls in love and marries Jeffrey. Shirley however, has a secret will Jeffrey discover it? He becomes very suspicious of her strange behaviour and comings and goings. Thinking she is having an affair he follows her to The Secret Cave. This is an emotional and exciting Science fiction tale...

5 Sword From the Sky

Sword From the Sky

R. Janvier del Valle | Sci-fi Fantasy

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It is the Dark Ages. A Dying Sun Sets in the West. Man Becomes Shadow. Out of this Sunless Land Will Rise a Legend... Of the Star born Child, Of the Great Cosmic War, Of the Sword of Power... It has been twelve years since the guardian star came down from the sky, hunting the elusive child destined to save the ailing sun. The end of the land is...

6 Caged in Darkness

Caged in Darkness

J.D. Stroube | Sci-fi Fantasy

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A witch raised in a cage of darkness... On her 16th birthday, Savannah is consumed by overwhelming power. She must choose between two loves; the one who taught her to smile or the darkly seductive stranger who tempts her towards another path. Suddenly, an unspeakable evil comes to claim a debt. How will she survive the greatest evil she has...

7 Forager

Forager

Peter R. Stone | Sci-fi Fantasy

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Twenty-year-old Ethan Jones has a secret that even his parents and foraging companions don't know - he's a mutant. And if he's found out, he'll be dragged away by the town's paramilitary Custodians to be dissected like a science project. The dull drudgery of Ethan's life is shattered when he rescues a mysterious Japanese girl from Skel savages...

8 Archangel Down

Archangel Down

C. Gockel | Sci-fi Fantasy

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In the year 2432, humans think they are alone in the universe. They're wrong.Commander Noa Sato plans a peaceful leave on her home planet, Luddeccea, but winds up interrogated and imprisoned for her involvement in the Archangel Project. A project she knows nothing about.Professor James Sinclair wakes in the snow, not remembering the past 24 hours...

9 Sworn to Raise

Sworn to Raise

Terah Edun | Sci-fi Fantasy

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A high fantasy adventure with magic, mystery and romance that follows a headstrong young woman in her efforts to turn an empire upside down.

10 A Minor Glitch

A Minor Glitch

Michel Poulin | Sci-fi Fantasy

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Scientific genius, savvy businesswoman, filthy rich, beautiful, ruthless : all words used frequently by others to describe Tasha Lenoir, founder and owner of the powerful Lenoir Industries consortium. She may be rich and powerful, but Tasha also has many enemies. That is why Tasha always go around accompanied by her personal bodyguard, Terry...

11 Dark Matter the Wolf Warrior: the Heart of Warriors

Dark Matter the Wolf Warrior: the Heart of Warriors

Amelia F. Lopes | Sci-fi Fantasy

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Through years of war throughout the galaxy, this dark warrior will soon face a new war against the dead.

12 A Tale Volume 2

A Tale Volume 2

Alina Udrea | Sci-fi Fantasy

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In this volume our heroes are facing an evil king who has a dragon by his side. I wrote a third volume which you can buy here:http://payhip.com/b/Mvge but each volume can be read as a stand alone work.

13 Star Wars: A Force to Contend With

Star Wars: A Force to Contend With

John Erik Ege | Sci-fi Fantasy

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Explore the Force as it brings together a group of individuals who have had all their lives severely impacted by the travesties of war and crime. This book may not be suitable for all audiences, as it explores mature themes such as slavery, crime, violence and sex. Set within the Star Wars universe as created by Lucas that from time to time may...

14 The Order of the Four Sons, Book I

The Order of the Four Sons, Book I

Lauren Scharhag | Sci-fi Fantasy

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Since before recorded history, the Order of the Four Sons has existed. From their beginnings in ancient Egypt to the boardrooms of modern times, they have fought a covert war against the enemies of humankind. Theirs is a world of magic, mystical creatures, and immortality. But now, after 5,000 years, their greatest battle is about to begin.

15 Death Ray Butterfly

Death Ray Butterfly

Tom Lichtenberg | Sci-fi Fantasy

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Inspector Stanley Mole doesn't mind a hard case, but things have gotten out of hand. There's a killer who escapes to a parallel universe, a frozen caveman with a bullet in his skull, a woman who claims to have witnessed her own murder, a toddler assassin, time-traveling dictators, and subatomic-particle sniffing butterflies. For Mole, this time...

16 ADVENTURES THROUGH TIME (2025 Edition)

ADVENTURES THROUGH TIME (2025 Edition)

Michel Poulin | Sci-fi Fantasy

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This science-fiction novel is a revised and updated 2025 edition of the original ADVENTURES THROUGH TIME, first published online in 2012, which was the second installment in a series depicting the adventures through time of Nancy Laplante, a female Canadian war correspondent and reserve army officer from the year 2012. Those novels were written...

17 Reaper's End

Reaper's End

Darren Joy | Sci-fi Fantasy

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A standalone prequel, set two centuries before the events of the Plagueborn series.On the remote Aidaril Islands, the Necropolis is both a sanctuary and a school for the undead. Within its dark halls is one of the living, a boy named Taver Wyn, who is training to protect a young undead mage named Tezcat Licolo. When dark forces descend on the...

18 Temporter

Temporter

Christopher M Robinson | Sci-fi Fantasy

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Awakening in hospital with Amnesia, a former teacher is arrested for causing the death of one of his colleagues and the suspicious disappearance of another. Did he really kill him?Has the missing person actually been sent to the future?A review by AI:"A cool, mind-bending setup.Temporal mechanics, ethical dilemmas, mystery, and emotional stakes...

19 A Wrath of Souls

A Wrath of Souls

Darren Joy | Sci-fi Fantasy

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Across the Spectrum of Existence, angelic hosts gather as Manic and Mania finalize their plans and a dark armada engulfs distant lands. Threadfin Todder, grieving and struggling to relearn magic, must prepare for battle as Lucifer threatens the mortal plane.Astra Dar’s fractured soul is dominated by Lucifer, as she fights for sanity, and Myral...

20 Tharaxis

Tharaxis

Darren Joy | Sci-fi Fantasy

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Tharaxis is a Plagueborn novella, placed between Books 4 and 5. Although it can be read on its own, it is best enjoyed as part of the full series.Tharaxis is the city of the dead, and within its walls, creatures known as souleaters hunt and feed. Lorn Larthuz, recently deceased, finds herself on a perilous quest to steal back the List of Souls...

21 Peter Carrot-Top

Peter Carrot-Top

Yolanda Jackson | Sci-fi Fantasy

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Peter Carrot-top is the first ghost child to be born on Earth,Until one day he discovers his powers of creating large black holes and was taken to see the mystical Oracle of the forest.She send him back to his home World of Baja way behind the moon,where he will use his powers to defend his land against the seven Wizards of the forest and their...

22 The Book of Nocera

The Book of Nocera

Luke Raven | Sci-fi Fantasy

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Alex and Lincoln’s collaborative book, Nocera, is told from the perspective of two extraordinary heroes that are everything the siblings aspire to be. Their make-believe land consists of magic, gorlacs, giants, horriks, and mystical cities that stretch the bounds of imagination. That’s why never in their wildest dreams would they have...

23 When Gods Fail

When Gods Fail

Nelson Lowhim | Sci-fi Fantasy

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Trapped in a cave, Tom digs himself out. He sees nothing but ashes for miles. A forest fire? He keeps walking until he finds other humans. Thoughts of his wife keep him going. But when he finds other people, he learns a terrible truth... The world is destroyed. What will he do? Find out in this thrilling tale!

24 Bryxx (Crimson Forest, #1)

Bryxx (Crimson Forest, #1)

Tarisa Marie | Sci-fi Fantasy

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From best-selling author “Tarisa Marie” comes Bryxx, the first book in her new Crimson Forest series. A small town in Montana hides a tragic supernatural secret. Over the span of centuries, many lives have been lost, many people have gone missing, and many others have lost their minds in the blink of an eye, all without explanation. When May...

25 Shining in Crimson: Empire of Blood Book One

Shining in Crimson: Empire of Blood Book One

Robert S. Wilson | Sci-fi Fantasy

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Set in a dystopian, religiously-demented American Empire, the city of Las Vegas is no longer a city of sin. Now called Necropolis, it is a city that eats sin. The vampires of Necropolis wait patiently for the Empire's weekly drop off of guilty Penitents; sinners and criminals full of fresh blood. Hank Evans is one of those Penitents and he...

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