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Free Kindle eBooks | Hard Science Fiction |

Showing Free eBook 1-30 of 275
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The Sphere: A Short Story by John Newcomb Crain by John Newcomb Crain

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Genre: Science Fiction & Fantasy, Science Fiction, First Contact, Hard Science Fiction / Size: 21 pages / Free from 10 December 2019  

Rika Outcast: A Tale of Mercenaries, Cyborgs, and Mechanized Infantry (Aeon 14: Rika's Marauders Book 1) by M. D. Cooper

In the Age of the Orion War...Rika is mech-meat, a cyborg killing machine, created by the Genevian military and cast aside when the war was lost.Now she slings cargo on Dekar Station, falling deeper in debt as she struggles to make enough money to keep her cybernetic body functioning. The ...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Cyberpunk, Galactic Empire, Hard Science Fiction, Military, Space Opera / Size: 249 pages / Free from 09 December 2019   Rating: 4.90 / 5 19 reviews

Star Game: Book 1, Ascension by F. P. Trotta

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Genre: Fiction, Science Fiction & Fantasy, Science Fiction, First Contact, Hard Science Fiction, Space Opera / Size: 455 pages / Free from 09 December 2019   Rating: 5.00 / 5 5 reviews

Plague of Equals: A science thriller of international disease, politics and drug discovery. (Pandemic Mysteries Book 2) by J Oestreicher

In cities and villages world-wide, drug companies must defend their clinical trials against anti-science activists. Eleanor Powell is convinced the drug companies have done their due diligence, but the global population is shrinking and politicians are looking for a scapegoat. Eleanor is f...

Genre: Crime, Thriller & Mystery, Thrillers, Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction, Teen & Young Adult / Size: 410 pages / Free from 09 December 2019   Rating: 4.00 / 5 13 reviews

Lucian 00000001 by Ray Fisher

Lucian 00000001 was an android with a problem. He hated his creator, Jackson. After breaking Jackson’s arms he was placed in a prison, Terra, with other faulty androids. Lucian became the tyrannical ruler of Terra forcing his master to design another android, Joshua, to restore peace the...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction, Metaphysical & Visionary / Size: 205 pages / Free from 09 December 2019   Rating: 5.00 / 5 1 review

First Comes Chaos (The Rexan Discovery Book 1) by Samantha Harmer

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Genre: Science Fiction & Fantasy, Hard Science Fiction / Size: 316 pages / Free from 09 December 2019   Rating: 5.00 / 5 1 review

Fesarius: Starship Down by JOHN ADAMS

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Genre: Science Fiction & Fantasy, Hard Science Fiction, Space Exploration / Size: 129 pages / Free from 09 December 2019  

Porcupine Station (The Golden Age of Heroes Book 7) by Ken Ramsley

David Evangelista is trapped in Alaska trying to figure out what happens next. At the hands of a natural disaster of unimaginable power, humanity has been nearly wiped out. The rest of his research team is stuck in the lower 48, and David is on his own. Daylight has disappeared, at leas...

Genre: Fiction, Action & Adventure, Literary Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction, Post-Apocalyptic / Size: 103 pages / Free from 09 December 2019   Rating: 5.00 / 5 2 reviews

Nadine's Bible (Book 1): Old Testament (AfroFuturism Sci-Fi) (Alien Monologues' series) by T Lindsey-Billingsley

Book One (2nd Edition;Alternate Cover) There's a popular saying that men are from Mars and women are from Venus. In this science fiction story, nothing is closer to the truth. The Great Mother created the perfect woman in Her image on Venus, and the Great Father created a perfect man in Hi...

Genre: Crime, Thriller & Mystery, Thrillers, Science Fiction & Fantasy, Fantasy, Epic, Fiction, Science Fiction, Fairy Tales, Alien Invasion, Colonisation, Cyberpunk, First Contact, Hard Science Fiction, Metaphysical & Visionary, Space Exploration, Space Opera, Time Travel, Teen & Young Adult / Size: 204 pages / Free from 09 December 2019   Rating: 4.00 / 5 1 review

Homo Avatarius: ( Your Consciousness is an Alien ) by JT Alblood

What if whatever you know as HISTORY is just an illusion? What if your consciousness was an Alien?

Throughout the history of the world, we have seen war, the spread of civilization, discovered many wonders, but what if in all that time, Homo sapiens were merely evolving into ...

Genre: Science Fiction & Fantasy, Fantasy, Fiction, Science Fiction, Alternative History, Hard Science Fiction / Size: 174 pages / Free from 09 December 2019   Rating: 3.60 / 5 4 reviews

God's Ground: Compared to the settlement of space, all other forms of human endeavor shrink to insignificance by John Brophy

Tesla Miller has never been to space and doesn’t even like to fly. Desperate to save herself and her six-month-old son from her violent husband, she takes a job as an “escort” at the Sky City Resort and Casino in low-Earth orbit. Sky City is the newest and largest entry in the fledgl...

Genre: Fiction, Action & Adventure, Science Fiction & Fantasy, Science Fiction, Adventure, Hard Science Fiction, Metaphysical & Visionary / Size: 217 pages / Free from 09 December 2019   Rating: 3.50 / 5 2 reviews

RoboSuicide by Steven Orlowski

You're mostly human, implanted with technology to improve your life. If it works, awesome. If not, you'll have to trigger the RoboSuicide Sequence, a kind of self-destruct mode that'll convert you to 100% Artificial Intelligence. Your consciousness will be gone. But no one will be able to...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Dystopian, Hard Science Fiction, Metaphysical & Visionary, Post-Apocalyptic / Size: 12 pages / Free from 09 December 2019   Rating: 2.50 / 5 2 reviews

Penticore Prime: The Tale of the Exodus by Mark Chevalier

Penticore Prime, a world where death is not bound by the laws of biology, and majestic towers rise into geosynchronous orbit. While far below, a colossal dome encloses a vast city landscape overflowing with light, color, and majestic architecture. Yet there is a reason why this ancient and...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Dystopian, Hard Science Fiction, Time Travel, Teen & Young Adult / Size: 363 pages / Free from 09 December 2019   Rating: 4.60 / 5 3 reviews

Empire Ascensions (Exile Empire Book 2) by Joshua Done

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Genre: Science Fiction & Fantasy, Galactic Empire, Hard Science Fiction, Space Exploration, Teen & Young Adult / Size: 376 pages / Free from 09 December 2019   Rating: 4.70 / 5 11 reviews

Beyond the Rubicon by John Peaseland

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Genre: Crime, Thriller & Mystery, Suspense, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction / Size: 235 pages / Free from 09 December 2019   Rating: 4.50 / 5 5 reviews

The Liberty Fleet Trilogy (War of Alien Aggression, box set two) by A.D. Bloom

The Liberty Fleet Trilogy - After victory in the 2164-2165 War, Humanity expands into the territory of an Imperium that has sworn to destroy them. The first shots of the new war echo through the surrounding systems as Humanity's neighboring species must choose sides and fight with or again...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction, Military, Space Opera / Size: 367 pages / Free from 09 December 2019   Rating: 3.20 / 5 3 reviews

Interaction Region by Chuck Boeheim

Croxton had a reality distortion field a mile wide. When he persuaded his colleague, Howe, to tour neighboring universes to ensure their stability, Howe didn't know what he was getting into, until he started going home to different versions of his wife…A short science fiction story set a...

Genre: Fiction, Short Stories, Science Fiction & Fantasy, Science Fiction, Anthologies & Short Stories, Hard Science Fiction / Size: 46 pages / Free from 09 December 2019   Rating: 5.00 / 5 5 reviews

Betta Virus: A Jadzia Banks Short Story (Kindle Single) by Jadzia Banks

It was old science, published back in 2011, but the implications intrigued her. Adira wasn’t as interested in eliminating fear as she was in generating it. What if instead of removing a healthy fear (like fear of a predator’s smell), a similar mechanism could be used to implant an unh...

Genre: Fiction, Short Stories, Science Fiction & Fantasy, Science Fiction, Anthologies & Short Stories, Genetic Engineering, Hard Science Fiction, Post-Apocalyptic / Size: 24 pages / Free from 09 December 2019   Rating: 4.40 / 5 4 reviews

Destiny of Hearts: A Dark Mafia Romance Story by Rachelle Mealove

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Genre: Science Fiction & Fantasy, Hard Science Fiction / Size: 36 pages / Free from 09 December 2019  

The Starship that Time forgot: A Captain Virginia Stoll Story by Edward Flynn

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Genre: Science Fiction & Fantasy, Hard Science Fiction, Military / Size: 274 pages / Free from 08 December 2019  

Sphinx Corporation Files: Flash Fiction: Collection #3 (Shades of Gray Short Shorts science fiction action adventure mystery thriller series) by Kristie Lynn Higgins

A collection of two Shades of Gray Flash Fiction pieces, very short reads to tickle your imagination. Dive into the world of Shades of Gray with these Flash Fiction pieces. These very short stories show glimpses of a world shrouded in darkness.1.Sphinx Corporation File:The Rogue #1A new ty...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Dystopian, Hard Science Fiction, Post-Apocalyptic / Size: Unknown / Free from 08 December 2019  

Glass Eye Pines by Michael Hodges

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Genre: Crime, Thriller & Mystery, Thrillers, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction / Size: 20 pages / Free from 08 December 2019  

Kinghood (The Fourpointe Chronicles Book 1) by Joshua Rutherford

From birth, Prince Jameson has been groomed to reign. On the heels of a victory against a barbarian force, he is welcomed home as a savior. His father toasts his impending marriage to the daughter of a key ally. Everything is in place for the young monarch-in-waiting. Yet all is not what i...

Genre: Science Fiction & Fantasy, Fantasy, Contemporary, Science Fiction, Myths & Legends, Hard Science Fiction / Size: 432 pages / Free from 08 December 2019   Rating: 5.00 / 5 2 reviews

Elias: The Caretaker (Elias/the caretaker) by R.L. Mitchley

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Genre: Science Fiction & Fantasy, Fantasy, Science Fiction, Superhero, Hard Science Fiction / Size: 22 pages / Free from 08 December 2019   Rating: 4.00 / 5 1 review

Commencement: Book Four of the HaChii Commencement by Patrick O'Connor

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Genre: Science Fiction & Fantasy, Hard Science Fiction / Size: 205 pages / Free from 08 December 2019  

A CALL FOR EARTHERS: THE THING WE HAVE TO DO IN THE WORLD OF HOVLEF by NL RINKU

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Genre: Science Fiction & Fantasy, Hard Science Fiction, Military / Size: 283 pages / Free from 08 December 2019  

Dhata Mays: A Futuristic Crime Thriller (The Synth Crisis Book 0) by Greg Dragon

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Genre: Crime, Thriller & Mystery, Mystery, Thrillers, Fiction, Action & Adventure, Science Fiction & Fantasy, Science Fiction, Adventure, Cyberpunk, Dystopian, Genetic Engineering, Hard Science Fiction, Metaphysical & Visionary / Size: 146 pages / Free from 08 December 2019   Rating: 4.50 / 5 5 reviews

The Phantom Fleet by Julien Boyer

Cold war between Earth and Mars. A massive invasion fleet suddenly appears off the corner of the solar system, headed towards Earth. The nearest patrol ship is sent to investigate, with little chance of survival....

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction, Military, Space Opera / Size: 37 pages / Free from 08 December 2019   Rating: 3.10 / 5 3 reviews

The Reality Delusion: Challenges Everything You Know and Believe by Simon Hadman

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Genre: Science Fiction & Fantasy, Fantasy, Science Fiction, Alternative History, Hard Science Fiction / Size: 512 pages / Free from 08 December 2019  

Mars Journey: Call to Action: Book 1: A SciFi Thriller Series by Bill Hargenrader

Get ready for an exciting, near-future SciFi thriller that will take you on an epic journey around the world and beyond… Mars Journey: Call to Action is the story that marks the beginning of humanity’s greatest adventure.

In the Mars Journey Series, Brent Carlson, a brilli...

Genre: Fiction, Short Stories, Science Fiction & Fantasy, Science Fiction, Anthologies & Short Stories, Colonisation, Hard Science Fiction, Metaphysical & Visionary, Space Exploration / Size: 116 pages / Free from 08 December 2019   Rating: 4.50 / 5 5 reviews

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