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Free Kindle eBooks | Hard Science Fiction |

Showing Free eBook 1-30 of 103
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Rating: 4.50 / 5
22 reviews

Dark (The Dark Trilogy Book 1)

by Paul L Arvidson

IN THE STRANGE labyrinth of pipes on the planet called Dark, things are falling apart. Dun doesn't want to be a hero, he just wants to find an answer to the terrifying dreams he's been having. But the answers, the real answers, are going to take him places he's never imagined and tear him from the only home he's ever known.With a half finished map from his missing father, an old friend, a new friend and the mysterious Myrch to guide him, he journeys through parts of his world he's never imagined. Are his dreams real foretellings? Who can he trust to be who they say there are? What are the strange forces that seem to be literally pulling their world apart?As he travels through a world that is much bigger than he thought it was, what he won't know will kill him. And everyone he knows."…Pac...

Genre: Science Fiction & Fantasy, Epic, Adventure, Coming of Age, Metaphysical & Visionary, Hard Science Fiction, Space Opera
Size: 299 pages
Free eBook download for Kindle from 25 May 2019 onward  

First Symptoms (chaotic by essence Book 1)

by richard deckard

...

Genre: Science Fiction & Fantasy, Dystopian, Hard Science Fiction
Size: 26 pages
Free eBook download for Kindle from 25 May 2019 onward  

Rating: 5.00 / 5
2 reviews

Faithful

by April Conrad

It is the 55th century, and Lehra Cranewing has always dreamed of traveling to the stars. Following the footsteps of her parents, she has joined ESEA, the Earth Space Exploration Administration, the paramilitary agency which controls all official exploratory missions for the Earth Star Alliance.Shortly after graduating from the academy, she makes a promise with her father that together, they will one day reach a world that has been coined “Fringe”, a habitable moon orbiting a gas giant 35 light years away. A project named “Resolute” seeks to send a craft there at 99% light speed, something that has never been done with a manned mission, and once it leaves, the craft will never return.Aydeline Rivervale is a rising star within ESEA, said to be the best efficiency expert in the whole...

Genre: Fiction, Gay & Lesbian, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction, Space Exploration
Size: 293 pages
Free eBook download for Kindle from 24 May 2019 onward  

Rating: 4.00 / 5
4 reviews

The Zeta Grey War: How it Began (A Science Fiction Thriller)

by D F Capps

This is not a full length novel. It is a short story that sets the stage for the popular Zeta Grey War Series, in particular book 1, New Recruits, and introduces some of the main characters.A young navy lieutenant proposes to the love of his life, only to have things go horribly wrong. A decades-long struggle ensues to find justice and the means to overcome hopelessly advanced alien technology.The Zeta Grey War series is a look at the covert world of secret space programs, extraterrestrial intervention in our world, the arrival of help from other human races in the galaxy, and stunningly advanced technology already present today.The methods and agenda of a predatory alien race is also explored through the research of some of our planet's more advanced scholars and scientists.For the milita...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Alien Invasion, Colonisation, First Contact, Hard Science Fiction
Size: 40 pages
Free eBook download for Kindle from 24 May 2019 onward  

Rating: 4.00 / 5
1 review

The Last Rats: A Bastion Saturn Short Prequel

by C. Chase Harwood

It’s the end of the 21st Century. The bulk of Humankind has conjoined itself with an artificial intelligence. A minority remain in opposition. A desperation has taken hold within the unincorporated zones where free humans still live. Many of them are choosing to leave Earth forever and fly to colonies on the moons of Saturn. In an ancient diner, Spruck Jones is about to make a bold move to change his flagging fortunes. Even the best laid plans almost never go as planned.The Last Rats is a short prequel that introduces the reader to some of the characters and the underlying world that is the basis for the space opera, Bastion Saturn....

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Dystopian, Hard Science Fiction, Teen & Young Adult
Size: 19 pages
Free eBook download for Kindle from 24 May 2019 onward  

Rating: 4.50 / 5
2 reviews

The Event

by Dick Caden

An indistinct message is received from space and is interpreted by many as the work of an Earth based government. When a second message is received, it tells mankind that the Universe is to be purged of all warlike and expansionist civilisations, but adds that the Earth is to be spared; but not without damage.After the one hour thirteen minute ‘Event’, the planet suffers stifling temperatures, a breakdown of infrastructure and the unexplained deaths of billions of seemingly healthy survivors. As the weeks and months pass, there is a belief that temperatures will stabilise and that normality will return. However, far from reaching equilibrium, the planet’s climate plunges ever downward until the Earth is covered in many metres of frozen snow. A global ice storm is followed by devastat...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Dystopian, Hard Science Fiction
Size: 333 pages
Free eBook download for Kindle from 24 May 2019 onward  

Rating: 5.00 / 5
1 review

The Soul Cage

by David Booker

The inventor of the world's first teleportation device has been savagely murdered, and Global Inspector Burt Campbell is tasked to uncover who killed the infamous scientist. As he delves deeper into the case, strange things begin to happen. Spirits seem to be controlling deadly objects to viciously attack him, and according to the teleporter computer, the spirits are taking orders straight from the inventor's ghost.The only person with answers is the inventor's beautiful assistant, Penelope Preston... but she has secrets of her own....

Genre: Crime, Thriller & Mystery, Thrillers, Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction, Metaphysical & Visionary
Size: 346 pages
Free eBook download for Kindle from 24 May 2019 onward  

Rating: 3.00 / 5
2 reviews

Eternal Love

by Lev Minkovsky

A moving love story with elements of sci-fi and humor and an epigraph from Nietzsche. A meditation on time and timelessness, memory and forgetting. A drama of an immortal man falling for a mortal woman. Read it if you want to learn what it is like to be immortal living amidst mortals and whether love can truly be eternal in the world where everything is transient and fleeting... A beautiful young woman in a university town meets a man at a bus stop. She doesn't realize that he is much older than he looks, because he doesn't age. A whirlwind romance follows, and they settle in a small single-story house, their future home of many decades and the only house she will ever own. Eventually the man moves to New York City and resurrects her in his memory in a truly astonishing way. ...

Genre: Fiction, Literary Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction
Size: 57 pages
Free eBook download for Kindle from 23 May 2019 onward  

Rating: 4.20 / 5
14 reviews

Loss Of Reason: A Thriller (State Of Reason Mystery, Book 1)

by Miles A. Maxwell

One Of The Most Disturbing Stories You'll Ever Read

Distant for many years, Franklin out of Pennsylvania and his step-brother Everon out of Nevada are connected by a single link: Their sister Cynthia.

Enter The Nightmare

A nuclear bomb is detonated in New York. Banker, wife, mother, Cynthia lives in New York.

The military has quarantined the city. All bridges and tunnels have been destroyed or blocked. Easterly winds have forced the huge cloud of radiation is out over Long Island. But the wind is about to change.

Franklin climbs mountains. Everon can fly anything. And Cynthia's brothers are determined to find her.

If it were your sister, what would you do?
...

Genre: Crime, Thriller & Mystery, Mystery, Thrillers, Suspense, Science Fiction & Fantasy, Fantasy, Epic, Historical, Fiction, Action & Adventure, Nonfiction, Romance, Science Fiction, Hard Science Fiction, Post-Apocalyptic
Size: 288 pages
Free eBook download for Kindle from 22 May 2019 onward  

Rating: 3.50 / 5
2 reviews

43 Seconds: A Hayden's World Hard Science Fiction Short Story (Hayden's World Origins Book 1)

by S.D. Falchetti

Twelve minutes to Mars.

James Hayden had a dream, and the Riggs test vehicle was going to take him there. But when failure after failure leads to his last chance exploding spectacularly, he must partner with an AI and gamble everything for one last shot at the stars.

43 Seconds is a science fiction short story set in the Hayden's World universe. The story can be read in twenty minutes and is the perfect size for reading on the go....

Genre: Fiction, Action & Adventure, Short Stories, Science Fiction & Fantasy, Science Fiction, Adventure, Anthologies & Short Stories, Hard Science Fiction, Military, Space Exploration
Size: 26 pages
Free eBook download for Kindle from 22 May 2019 onward  

Rating: 4.10 / 5
6 reviews

Bleak - The first mission: (The 10,000 word prequel to Bleak - The story of a shapeshifter)

by Ian Martyn

Bleak is a manipulant human clone, a shapeshifter. He and his kind are considered an abomination, unless… In putting down the rebellion the Confederation develops the ultimate spies. Creating, against all conventions on the use of human clones, the manipulants, shapeshifters. Now it is time for Bleak’s first mission.This 10,000 word novelette is the prequel to ‘Bleak – The story of a shape shifter.’...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Galactic Empire, Hard Science Fiction, Military
Size: 40 pages
Free eBook download for Kindle from 21 May 2019 onward  

Rating: 3.80 / 5
11 reviews

Duplicate: Installed Intelligence Prequel #1 (Installed Intelligence Prequels)

by Phoenix Ward

Upon death, the neurological data that composes one's personality is downloaded and installed onto computers in the next evolution from A.I.s. These programs are known as installed intelligences, or I.I.s, and they are the secret to human immortality. In recent years, the installation process has open up for the wealthy public as a means to keep family members alive after their body has died.

This is the story of a man who is mistaken for dead and has his mind installed before recovering and becoming the first living person with an I.I. of him or herself.

Cover art by Jake@jcalebdesign.com...

Genre: Crime, Thriller & Mystery, Thrillers, Fiction, Science Fiction & Fantasy, Science Fiction, Cyberpunk, Genetic Engineering, Hard Science Fiction, Metaphysical & Visionary
Size: 21 pages
Free eBook download for Kindle from 21 May 2019 onward  

Rating: 2.00 / 5
1 review

101 Visions of Tomorrow (Numbered Tomorrows Book 1)

by Phaeton Chamberlain

...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Anthologies & Short Stories, Genetic Engineering, Hard Science Fiction
Size: 123 pages
Free eBook download for Kindle from 21 May 2019 onward  

THE INTERDIMENSIONAL GATE (PARALLEL WORLDS Book 2)

by Salinas Segura, Luis Alberto

...

Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 45 pages
Free eBook download for Kindle from 20 May 2019 onward  

Rating: 4.40 / 5
17 reviews

alecs

by Howard Marsh

Computer scientists and software developers have tried for many years to create a machine that can think and act like a human being. They haven’t succeeded yet, but they’ve come closer and closer with each new generation of hardware and software. What if they do succeed and create a cybernetic system that exhibits true intelligence sufficient to pass the Turing Test? And what would happen if this cybernetic intelligence develops some degree of self-awareness and a desire to live forever? Would it remain a slave to its creators, or would it decide for itself that it was a living entity with its own purpose in life?Those questions are the central theme in this story about an intelligent cybernetic system that was built to assist in fighting the war on terror but decided for itself th...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction, Military
Size: 270 pages
Free eBook download for Kindle from 20 May 2019 onward  

Rating: 5.00 / 5
2 reviews

The Ark Gambit: Book One of The Diaspora

by C.G. Lane

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Genre: Science Fiction & Fantasy, Hard Science Fiction, Military, Space Exploration
Size: 85 pages
Free eBook download for Kindle from 20 May 2019 onward  

Sand Trap

by Dan Ust

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Genre: Fiction, Horror, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction
Size: 13 pages
Free eBook download for Kindle from 20 May 2019 onward  

Rating: 5.00 / 5
1 review

ZONE

by Russell Corey

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Genre: Science Fiction & Fantasy, Hard Science Fiction, Time Travel
Size: 406 pages
Free eBook download for Kindle from 19 May 2019 onward  

Rating: 4.00 / 5
1 review

The Imaginary Revolution - 1

by Roy Jackaman

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Genre: Science Fiction & Fantasy, Science Fiction, Alternative History, Hard Science Fiction, Time Travel
Size: 223 pages
Free eBook download for Kindle from 19 May 2019 onward  

Secret of Wormhole and Soul of Galaxies A Novel (Secret of Wormhole and Soul of Galaxies Series Book 1)

by Vikrant Singh

...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction
Size: Unknown
Free eBook download for Kindle from 19 May 2019 onward  

Rating: 4.20 / 5
11 reviews

Home Planet: Awakening (Part 1)

by T.J. Sedgwick

...

Genre: Science Fiction & Fantasy, Hard Science Fiction, Space Exploration
Size: 125 pages
Free eBook download for Kindle from 19 May 2019 onward  

Rating: 5.00 / 5
2 reviews

The Wanderer:: Book One of the Godsend Series Section 3

by Timothious Smith

The 3rd installment of the Book One of the Godsend Series. Da`e continues to learn his powers as things heat up between the two alien races biding for control of Earth. What do two alien races, planet Earth, memory lost, secret organizations, angels, magic, demons, space flight, spirits and the hope of all mankind have in common? His name is D`ae but on Earth he is known as Kirk Alexander Doyle. Sent to earth on a secret mission to save Earth from with in D`ae is captured and his memory is wiped. His handlers have been trying to contact him for years with no result. The United Earth Bureau of Investigation is out to capture him. The leader of an opposing Alien race wants him dead. Kirk is just trying to understand why he has all these powers that make him different from everyone else. Fol...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Alien Invasion, Hard Science Fiction, Space Opera, Time Travel
Size: 275 pages
Free eBook download for Kindle from 19 May 2019 onward  

Rating: 5.00 / 5
1 review

Lifeline

by Christopher Keith

Welcome to ELF – the Extended Life Foundation. Dr Bryan Morgan, a former medic in the Royal Army Medical Corps and a psychologist, has been handpicked to work for the medically advanced ELF, a vast underground institute where people go to die in order to live. It’s a dream job, but life is never that simple, and two months into his residency it soon turns into a nightmare when he uncovers a disturbing truth. In that crucial moment, he is left questioning his entire life. Struggling with his demons and the derailment of his personal relationships, Bryan is drawn into a deadly conflict with ELF and will go to any lengths to expose the rogue foundation and end its evil misconduct. It’s not about revenge. Or stopping a dangerous regime. Or fighting for justice. It’s about protecting hi...

Genre: Crime, Thriller & Mystery, Thrillers, Fiction, Action & Adventure, War, Science Fiction & Fantasy, Hard Science Fiction
Size: 381 pages
Free eBook download for Kindle from 19 May 2019 onward  

Rating: 4.00 / 5
1 review

The Jovian Run: Sol Space Book One

by James Wilks

The year is 2126. Mars and the Moon have been colonized, and mankind has begun to push out into the Jovian sector, the dark region of space beyond the asteroid belt rich with resources but also rife with danger.Clea Staples is the captain of Gringolet, a commuter vessel that ferries passengers and cargo for the corporations that finance off-world colonies and mining operations. She and her crew have just accepted a lucrative job that will take them from Earth to Mars, and then beyond to a tiny mining facility in orbit around distant Saturn.What they don’t know, however, is that all is not as it seems. There are forces at work even beyond the machinations of the corporations, and as a series of mishaps and seemingly chance encounters bring them ever closer to disaster, it becomes clear t...

Genre: Fiction, Action & Adventure, Science Fiction & Fantasy, Science Fiction, Adventure, Hard Science Fiction
Size: 394 pages
Free eBook download for Kindle from 19 May 2019 onward  

Out of Space – Out of Time (The Architects Series Book 1)

by Walt Christmas

Scott McKenzie is studying for finals when a cloaked figure appears out of thin air, in the center of his living room. The Marksman, as Scott decides to call him, steps out of an impossibly black, oval-shaped hole in space and shoots Scott in the cheek with a small splinter-dart. The Marksman promptly disappears, but over the coming weeks, the dart acts like an artificial virus which affects Scott in various ways— leaving him with strange and disturbing dreams, an ability to form gates and jump through space, and a host of troubling questions.Scott finds three others at the University who were also recruited by the Marksman, he encounters intelligent artifacts—only one that wants to be helpful—and, at last, he learns the vitally important task for which they were recruited....

Genre: Fiction, Action & Adventure, Science Fiction & Fantasy, Science Fiction, Adventure, Hard Science Fiction
Size: 164 pages
Free eBook download for Kindle from 19 May 2019 onward  

Hi, Guys. I'm Us.

by K. Anderson Yancy

A physically wounded soldier living his last days and an emotionally wounded woman about to commit suicide, through the aid of a visitor from the future discover they're related in a startling way....

Genre: Children's eBooks, Science, Nature & How It Works, Fiction, Science Fiction & Fantasy, Science Fiction, Literature & Fiction, Children's Fiction, Hard Science Fiction, Metaphysical & Visionary, Time Travel
Size: 22 pages
Free eBook download for Kindle from 19 May 2019 onward  

Entangled: The Chasing Light Series Book 1

by Lewis Masters

...

Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 350 pages
Free eBook download for Kindle from 19 May 2019 onward  

Rating: 4.50 / 5
13 reviews

Andrea the Martian Robot: Human Safety is a Primary Concern

by Anthony J. Deeney

Human safety is a primary concern.

No other robot can rival the new Harrowgate & Webster models, which regularly demonstrate astounding problem solving abilities and a virtually human level of awareness.

Recognising the advanced nature of these robots, Patricia Vicarro has selected HWR-001-046-QF Andrea to send to Mars in the first of a three stage project to build a colony.

She is sent in the first launch window to build the first colony pods on the base, preparing everything for the arrival of Adam Copeland.

Everything must be perfect.

Andrea spends nearly three years in isolation, preparing for Adam’s arrival. With everything ready, she watches the Martian sky eagerly, but there are powerful people who would wish t...

Genre: Fiction, Short Stories, Science Fiction & Fantasy, Science Fiction, Anthologies & Short Stories, Colonisation, Hard Science Fiction, Space Exploration
Size: 91 pages
Free eBook download for Kindle from 19 May 2019 onward  

Rating: 1.00 / 5
1 review

FIRST COLONY: Corridors (1), STRONGHOLDS (2) BOX SET: THE LOST ARTEFACT: THE LOST STARSHIP

by Valerii Titov

...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Colonisation, Cyberpunk, Hard Science Fiction, Military, Space Exploration
Size: 371 pages
Free eBook download for Kindle from 18 May 2019 onward  

Rating: 3.40 / 5
23 reviews

Seen And Not Seen

by William Bowden

The Veil play all sides, sometimes in our best interests, sometimes not. Now they have secretly deposited something at the United Nations – the victim of a horrifying crime against humanity. But is she a pawn or a terrifying weapon?

A clandestine government agency seeks to find out and fast, unaware that the answer lies at the centre of a man's dramatic spiral into an abyss of mania and despair that is already playing out on the world stage.

Seen And Not Seen is a technological thriller set in the near future, a world that needs to face up to its stretched resources, a bold endeavour to preserve our way of life and the dark road that some elements of the Human Race would have us take....

Genre: Crime, Thriller & Mystery, Thrillers, Fiction, Action & Adventure, Science Fiction & Fantasy, Science Fiction, Adventure, First Contact, Genetic Engineering, Hard Science Fiction
Size: 104 pages
Free eBook download for Kindle from 18 May 2019 onward  

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