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Free Kindle eBooks | Hard Science Fiction |

Showing Free eBook 1-30 of 196
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Rating: 4.60 / 5
3 reviews

Patriot Son: Battlefront America (Patriot Son: Dystopian Survival Book 1)

by T.A. Walters

From the Best Selling Author of the Silo 40 seriesOut of a nuclear-induced EMP, America is shaken as all three of our country's main power grids are destroyed. Trucks, cars, buses, and even trains roll to a permanent halt. Streets and highways appeared as desolate as auto junkyards and major cities became mausoleums of the millions who died from sarin gas bombings.Foreign superpowers rose up while our nation's leaders fought amongst themselves. Radical nations acquired nuclear ICBM'S and opened the door for a mass assault. Geo-satellite keycodes were sold by our nation's political power brokers; the rest, being strategic military satellites, all hacked and rendered useless. China and Soviet naval forces back up our nation's shores for radical Islamic forces to invade and round up urban cou...

Genre: Crime, Thriller & Mystery, Thrillers, Fiction, Action & Adventure, Political, War, Science Fiction & Fantasy, Science Fiction, Dystopian, Hard Science Fiction, Military, Post-Apocalyptic
Size: 185 pages
Free eBook download for Kindle from 16 July 2019 onward  

Rating: 4.00 / 5
5 reviews

Paragon.EXE (Absolute Knowledge Book 0)

by Drew Cordell

Paragon.EXE is the prequel novella to the Absolute Knowledge trilogy. Fueled by the Cold War, the development of the Absolute Knowledge project began with very different objectives than are present in the year 2146, over two hundred years in the future from the start of the Omniscient Project. Created as a project to aid leadership in the case of catastrophe, the Omniscient project was morphed by corruption and the pursuit of the unknown. These changes were hidden through time only to resurface when the stakes were much higher. Paragon.EXE takes place in the 1960s and 2020s and follows the chilling development of the Absolute Knowledge project from its cryptic roots....

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Cyberpunk, Dystopian, Galactic Empire, Hard Science Fiction
Size: 39 pages
Free eBook download for Kindle from 16 July 2019 onward  

Rating: 5.00 / 5
1 review

Starship Doi - Wars

by Alex Deva

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Genre: Science Fiction & Fantasy, Hard Science Fiction, Time Travel
Size: 262 pages
Free eBook download for Kindle from 16 July 2019 onward  

Rating: 4.70 / 5
5 reviews

Gil's World (Wanderers Book 1)

by James Murdo

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Genre: Science Fiction & Fantasy, Science Fiction, Adventure, Alien Invasion, First Contact, Galactic Empire, Hard Science Fiction, Military, Space Exploration, Space Opera, Teen & Young Adult, Mysteries & Thrillers
Size: 386 pages
Free eBook download for Kindle from 15 July 2019 onward  

Rating: 5.00 / 5
1 review

The New United States: Part 3 of The Raffle

by Randy Smith

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Genre: Science Fiction & Fantasy, Dystopian, Hard Science Fiction, Post-Apocalyptic
Size: 61 pages
Free eBook download for Kindle from 15 July 2019 onward  

The Algorithms: Prescience

by Paul Tracy

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Genre: Science Fiction & Fantasy, Hard Science Fiction, Time Travel
Size: 459 pages
Free eBook download for Kindle from 15 July 2019 onward  

Rating: 4.50 / 5
2 reviews

Coefficient of Expansionism and Delta Stress at Pressure Naught: Two Science Fiction Tree, Flash Fictions

by Brian Garrison

This title is actually two "flash fiction" stories. Neither is long enough to be considered a short story. Coefficient of Expansionism is a quest to settle the south pole, of the Moon. Delta Stress at Pressure Naught is an entrepreneur's adventure, to space and back....

Genre: Fiction, Action & Adventure, Science Fiction & Fantasy, Science Fiction, Adventure, Colonisation, Hard Science Fiction, Teen & Young Adult
Size: 19 pages
Free eBook download for Kindle from 15 July 2019 onward  

Rating: 3.20 / 5
3 reviews

Expeditions of the Mantis: Mantis Saga: Book 2

by Jim Henderson

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Genre: Science Fiction & Fantasy, Hard Science Fiction, Military
Size: 213 pages
Free eBook download for Kindle from 15 July 2019 onward  

Far Mantis: Mantis Saga Book 3

by Jim Henderson

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Genre: Science Fiction & Fantasy, Hard Science Fiction, Military
Size: 285 pages
Free eBook download for Kindle from 15 July 2019 onward  

Rating: 5.00 / 5
3 reviews

Fesarius: The Speed Trials

by JOHN ADAMS

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Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: Unknown
Free eBook download for Kindle from 14 July 2019 onward  

OTHER WORLDS: DIMENSIONAL CRASH (PARALLEL WORLDS Book 1)

by Salinas Segura, Luis Alberto

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Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: Unknown
Free eBook download for Kindle from 14 July 2019 onward  

Humanoid AI: More human than human?

by Robert J Allen

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Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 169 pages
Free eBook download for Kindle from 14 July 2019 onward  

Rating: 4.40 / 5
37 reviews

The Exile Empire

by Joshua Done

Live. Run. The last message from Central Command was more a plea than an order, and running is exactly what the last remnants of humanity did to escape The Death as Earth was destroyed. Among the survivors is James Ursidae, a fearsome warrior whose despair now outweighs his expectations for the future. After months of drifting through intergalactic space, Ursidae and what humanity remains have found a spark of hope on the planet Lintalla and in the company of its native Illani. Unfortunately, starting anew comes at a price, and even in a strange system violence and war are a constant. A new enemy, the Tarin’Tal, hold the system’s inhabitants in a vice-like grip that continues to tighten. Can Ursidae and the Earthlings burn bright yet again and save their new world from the destruction ...

Genre: Fiction, Action & Adventure, Science Fiction & Fantasy, Science Fiction, Adventure, Hard Science Fiction, Teen & Young Adult
Size: Unknown
Free eBook download for Kindle from 14 July 2019 onward  

Rating: 4.00 / 5
1 review

Loss of Signal: a novella

by Daniel Fludgate

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Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 84 pages
Free eBook download for Kindle from 14 July 2019 onward  

Rating: 3.60 / 5
18 reviews

Paradox - On the Brink of Eternity

by Phillip P. Peterson

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Genre: Crime, Thriller & Mystery, Thrillers, Fiction, Science Fiction & Fantasy, Science Fiction, First Contact, Hard Science Fiction, Space Exploration
Size: 448 pages
Free eBook download for Kindle from 14 July 2019 onward  

Rating: 3.90 / 5
13 reviews

DISRUPTIVE SHOCK: An EMP Survival story (DISRUPTIVE SHOCK Book 1)

by Connor Mccoy

A yearly trek to the carnival with his young sons is the highlight of Ian Carrol’s life. What begins as another opportunity to build lifelong memories quickly fades to black by the time the sun sets. The world and humanity at large take an inexplicable turn, leaving the struggling single father to resort to desperate measures to get his family to safety. As they traverse the increasingly dangerous landscape, they find themselves face-to-face with the worst this broken society has to offer.Will Ian achieve his goal and get his family to his parents’ home before danger finds them?...

Genre: Science Fiction & Fantasy, Science Fiction, Hard Science Fiction, Post-Apocalyptic
Size: 169 pages
Free eBook download for Kindle from 14 July 2019 onward  

Emergent: Book 1 of the Cerenovo Series

by Michael S. Nuckols

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Genre: Crime, Thriller & Mystery, Thrillers, Fiction, Science Fiction & Fantasy, Science Fiction, Cyberpunk, Dystopian, Genetic Engineering, Hard Science Fiction
Size: 311 pages
Free eBook download for Kindle from 14 July 2019 onward  

Rating: 1.00 / 5
1 review

Year’s Best & Big Science Fiction Book: Fantastic Science Fiction Stories Collection

by Teddy Boles

This gathering propelled the prominent and long-running "The Year's Best Science Fiction" stories Fabulous Science Fiction! The Year's Best - And Biggest Collection...

Genre: Fiction, Short Stories, Science Fiction & Fantasy, Science Fiction, Anthologies & Short Stories, Hard Science Fiction
Size: 105 pages
Free eBook download for Kindle from 14 July 2019 onward  

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 eBook download for Kindle from 12 July 2019 onward  

Rating: 5.00 / 5
2 reviews

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 least for a while, and the Moon is probably gone for good. The ‘old’ Earth is over. The ‘new’ Earth is a shaky proposition.

If the Sun ever rises again, David will work his way upstream along the Porcupine River to Old Crow in Yukon Territory, a community of the Van Tat Gwich’in First Nation people. The Gwich’in operate a commercial airport. It’s a long shot, but maybe a way home.

While David prepares for his dangerous hike, a visitor arrives. It will be a huge ste...

Genre: Fiction, Action & Adventure, Literary Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction, Post-Apocalyptic
Size: 103 pages
Free eBook download for Kindle from 12 July 2019 onward  

Rating: 4.00 / 5
1 review

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 His image on Mars. Now, the Great Father and Great Mother are feuding; a Gender War is beginning. This multi viewpoint story introduces you to the Amazons, the history of their Order, and story of humanity's beginning. This is a tale of bloody battles, political intrigue, and extra-terrestrials; loosely based off conspiracy theories, major religions, and Greek mythology. This is the story of an advanced race of warrior women that reside on the dark and secret side of Venus, unseen from the earth and Mars....

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 eBook download for Kindle from 12 July 2019 onward  

Rating: 3.60 / 5
4 reviews

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 something new? What if on the inside we are all alien?
Homo Avatarius now rules the Earth. The invasion has already ended. Wake up to reality; your inner voice is an alien.
The story while also featuring some interesting characters from Adolf Hitler to Wilhelm Reich.
As it is said, that the future affects the past, the story also takes you on a time adventure from Hitler's WWII time, the 1214 Ancient Beijing Warriors time to the modern 20th century.
The novel also has a stunnin...

Genre: Science Fiction & Fantasy, Fantasy, Fiction, Science Fiction, Alternative History, Hard Science Fiction
Size: 174 pages
Free eBook download for Kindle from 12 July 2019 onward  

Rating: 3.50 / 5
2 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 fledgling space tourism industry. Tiny by earthly standards, with just seventy-two guest rooms, it is nevertheless equipped with all of the latest attractions. Tesla finds herself in a strange and wonderful new world dominated by the absence of gravity. While experiencing the considerable pleasures and costs of a life without gravity, she ultimately discovers two facts that change the course of history and unleash powerful forces hell-bent on maintaining the status quo....

Genre: Fiction, Action & Adventure, Science Fiction & Fantasy, Science Fiction, Adventure, Hard Science Fiction, Metaphysical & Visionary
Size: 217 pages
Free eBook download for Kindle from 12 July 2019 onward  

Rating: 2.50 / 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 tell the difference. Welcome to the Future....

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Dystopian, Hard Science Fiction, Metaphysical & Visionary, Post-Apocalyptic
Size: 12 pages
Free eBook download for Kindle from 12 July 2019 onward  

Rating: 4.60 / 5
3 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 powerful race is confined to fifteen cities across one broad continent, and that reason is climate change.Candor Shubin, a noted geologist, is a man caught between two worlds. Thrust into this alien landscape, his desperate struggle to reconcile reality threatens to fracture his sanity, and end his existence. Yet the clock is ticking, and as the danger to Penticore Prime grows, Candor discovers more than he could possibly imagine.In an explosive climax that challenges the precepts of evolution, and time,...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Dystopian, Hard Science Fiction, Time Travel, Teen & Young Adult
Size: 363 pages
Free eBook download for Kindle from 12 July 2019 onward  

Rating: 4.70 / 5
11 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 eBook download for Kindle from 12 July 2019 onward  

Rating: 5.00 / 5
1 review

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 eBook download for Kindle from 12 July 2019 onward  

Rating: 3.20 / 5
3 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 against the local cluster's newest upstart rebels.
2166 - FORCE LIBERTY
Ram Devlin of the Staas Company Privateers ventures to Shedir-4 with the attack carrier Hardway and a new UN battleship. Pursued by a devastating Imperium warship, they seek allies and technology. Staas Company and the UN will stop at nothing to acquire what Earth needs to protect itself, but their gunboat diplomacy could cripple Humanity's expansion by marking us as the galaxy's most dangerous savages. Ram Devlin can't allow ...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction, Military, Space Opera
Size: 367 pages
Free eBook download for Kindle from 12 July 2019 onward  

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 eBook download for Kindle from 11 July 2019 onward  

Rating: 5.00 / 5
2 reviews

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 it seems in Arcporte Castle. In the shadows, barons speak of usurping their sovereign. Kings doubt their alliances on the eve of signing a treaty. And one royal is much more than the man he claims to be. In the midst of this mystery and intrigue, a throne is challenged. Kin Saliswater, having ruled their island nation of Marland for over two centuries, find their dynasty in tatters. Only by marshaling every resource – and blood relative – available, do they stand a chance to defend their rule and secur...

Genre: Science Fiction & Fantasy, Fantasy, Contemporary, Science Fiction, Myths & Legends, Hard Science Fiction
Size: 432 pages
Free eBook download for Kindle from 11 July 2019 onward  

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