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Free Kindle eBooks | Hard Science Fiction | from Amazon and Smashwords

Showing Free eBook 1-30 of 228
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Rating: 5.00 / 5
1 review

The Response (Alien Horror - Book 1)

by Gary Naiman

The greatest fighting machine the world has ever known. This tiny creature has survived dinosaurs, asteroids, mega-volcanoes, the ice age, and science’s deadliest insecticides. We've stomped her, sprayed her, and cursed her, but this time we went too far. She just received an interstellar signal to wipe us out.

Gary Naiman's sci-fi thriller opens with a global uprising of ten thousand trillion enraged ants, their target…us. With killer swarms devastating our cities and populations, a team of scientists discover the attacks have been triggered by an ill-advised NASA transmission, setting the stage for humanity's greatest battle against a formidable six-legged enemy and its alien parents.

If you’re looking for sci-fi in the spirit of Them and Starship Troopers...

Genre: Children's eBooks, Fiction, Horror, Science Fiction & Fantasy, Science Fiction, Alien Invasion, Colonisation, First Contact, Galactic Empire, Hard Science Fiction, Military, Post-Apocalyptic, Space Opera
Size: 170 pages
Free eBook download for Kindle from 19 September 2019 onward  

Rating: 4.00 / 5
2 reviews

From the Void: Invasion

by Gary Naiman

It Begins With A Blinding Light . . .We are about to be attacked by a superior alien force, the insect ancestors of our lowly ants. Book One "The Response" revealed our ants were brought here one hundred forty million years ago to rule our planet. Unfortunately, an ill-advised NASA transmission has alerted the aliens their interstellar colonization failed because of the unexpected rise of human beings. Really bad move, NASA! The enraged aliens have decided to unleash their deadly war machines against Earth with one purpose, our extermination, and they're considerably larger than their offspring. It's time to meet the parents.If you're looking for sci-fi in the spirit of "Them" and "Starship Troopers", consider "From the Void". Gary Naiman has written thirteen novels. His background include...

Genre: Fiction, Horror, Science Fiction & Fantasy, Science Fiction, Alien Invasion, Colonisation, First Contact, Galactic Empire, Hard Science Fiction, Military, Post-Apocalyptic, Space Opera
Size: 160 pages
Free eBook download for Kindle from 19 September 2019 onward  

Rating: 2.00 / 5
1 review

Love Boat: The Instigation of Inherent Insanity

by Ingo Potsch

...

Genre: Science Fiction & Fantasy, Fantasy, Science Fiction, Superhero, First Contact, Hard Science Fiction, Military
Size: 663 pages
Free eBook download for Kindle from 19 September 2019 onward  

Inia: English Version

by Del Gaudio, Raffaele

SYNOPSIS:
Located today, “Inia” draws on from some recent events of the scientific world, in particular from the accident happened at the LHC of Geneva. It tames few historical facts making them part of the plot.
Among the main characters there are: Eric and James, two men of extraterrestrial origin, which with other people are the maker of the last 500 hundred years of our history; Jonah, a brilliant scientist used and guided by aliens to reach their goal. Antoine, a brilliant young man grown among humans and unaware of his alien origin and many other characters which take part in the stories of the main characters and someone will become a key point for the novel.

THE ORIGIN OF THE STORY.
“Inia” is a planet quite similar to the earth fo...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, First Contact, Hard Science Fiction, Teen & Young Adult
Size: 252 pages
Free eBook download for Kindle from 19 September 2019 onward  

Rating: 5.00 / 5
3 reviews

Snowing In Johannesburg

by Mark Rodseth

...

Genre: Science Fiction & Fantasy, Science Fiction, Hard Science Fiction
Size: 411 pages
Free eBook download for Kindle from 19 September 2019 onward  

Rating: 5.00 / 5
2 reviews

Harvest

by Olga Werby

...

Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 420 pages
Free eBook download for Kindle from 19 September 2019 onward  

Rating: 4.00 / 5
1 review

Revelations: Kingdom of Sand - Book 1: Judgment Day

by R. E. Graham

...

Genre: Science Fiction & Fantasy, Hard Science Fiction, Military
Size: 404 pages
Free eBook download for Kindle from 19 September 2019 onward  

The Gael Gates: Magic Versus Science (Galactic Adventures Book 2)

by Scott Michael Decker

Held together for millennia by the ancient Gael Gates, The Federation is on the verge of collapse. After three people suddenly disappear into the mysterious portals, Culann Penrose is called in to investigate.Discovering that the ancient system binding the gates is crumbling, he orders they be shut down. The Druids, still seething at his denunciation of Magic twenty years ago, vehemently oppose Penrose’s inquiry. But then Culann discovers that the weakening technology has inflamed a new Elemental—one which is out to destroy him.Can Culann unravel the enigmatic mystery of the Gates in time for Science to save him ... or will his Magic save the Science of the Gael Gates?...

Genre: Crime, Thriller & Mystery, Thrillers, Fiction, Science Fiction & Fantasy, Science Fiction, Galactic Empire, Hard Science Fiction, Space Exploration
Size: 247 pages
Free eBook download for Kindle from 19 September 2019 onward  

A Parting of the Ways: Book Three of the HaChii Commencement

by Patrick O'Connor

...

Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 315 pages
Free eBook download for Kindle from 19 September 2019 onward  

Rating: 4.40 / 5
5 reviews

Devolution of a Species

by M.E. Ellington

For thousands of years, mankind had lived in harmony with nature. But that harmony is now lost as we continue to pollute and rape the planet for our own greed and material possession. We decimate areas of the natural world to feed and home an ever exploding population, and hunt animals in the name of sport, and for cruelty itself. Now, something is happening to our species. Planet earth is fighting back, and it’s taking away our advantage. Humankind’s intelligence. The World Health Organization must find out what is happening as acts of unprecedented violence sweep across the globe. But when Joceline Mercier, the head scientist, stumbles upon the answers, everything we thought we knew about our past and future changes. With time almost up, has she discovered the answers too late? Is th...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction, Teen & Young Adult
Size: 294 pages
Free eBook download for Kindle from 18 September 2019 onward  

Rating: 4.00 / 5
2 reviews

Interplanetary Tales

by George H.Y. Watson

Thirteen Science Fiction tales that span the galaxy;In one tale we have a plague-ravaged London, in another an unwitting and unwelcome visit to the Galactic Core.From a small town in a future Oregon where only robots survive we travel to Epsilon Eridani 'B' where retired Oldies struggle to survive on their wits rather than a pension after being abandoned.'Interplanetary tales' is an 'unluck for some' selection of 13 tales containing humor, sometimes horror but always the deep fear of the Great Darkness between the stars....

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Anthologies & Short Stories, Alien Invasion, Hard Science Fiction, Post-Apocalyptic
Size: 91 pages
Free eBook download for Kindle from 18 September 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 18 September 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 18 September 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 18 September 2019 onward  

Rating: 5.00 / 5
2 reviews

The Ark Gambit: Book One of The Diaspora

by C.G. Lane

...

Genre: Science Fiction & Fantasy, Hard Science Fiction, Military, Space Exploration
Size: 85 pages
Free eBook download for Kindle from 18 September 2019 onward  

Rating: 3.30 / 5
4 reviews

EMOTION MARKET series: So it begins #1 - An Emotional Sci-fi adventure

by Dimitris Chasapis

Doctor Caroline Emerson, a Nobel Prize winner in Medicine, is a guest on Mary Ann West's wildly popular show 10 with Mary Ann. The interview is viewed live by 500+ million viewers.
The doctor's prize-winning patented tech is being implemented and offered to the public, but not everyone is enthusiastic about the innovation - to put it mildly. Emotion Markets start to operate in major cities around the globe. Citizens are finally able to buy emotions and control their intensity!
Caroline's dream of helping people by allowing them to improve the psyches and eliminate negative emotions is finally becoming a reality. She knew society would be better for it.
However, there is intense social unrest created by skeptics and ...

Genre: Crime, Thriller & Mystery, Mystery, Thrillers, Suspense, Fiction, Action & Adventure, Political, Religious Fiction, Science Fiction & Fantasy, Science Fiction, Adventure, Genetic Engineering, Hard Science Fiction, Crime Fiction
Size: 190 pages
Free eBook download for Kindle from 18 September 2019 onward  

Sand Trap

by Dan Ust

...

Genre: Fiction, Horror, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction
Size: 13 pages
Free eBook download for Kindle from 18 September 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 18 September 2019 onward  

Any Mouse: RYP#35

by Trevor R. Fairbanks

in 2114 rock and roll is still dangerous....

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction
Size: 247 pages
Free eBook download for Kindle from 17 September 2019 onward  

Rating: 1.00 / 5
1 review

Connect

by Kenneth Burstall

Earth is failing. The last hope of humanity is the starship Unity, on route to a habitable planet on a journey that will take thousands of years and that also looks likely to fail. Sri, however, has other, greater plans ......

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction, Military, Post-Apocalyptic
Size: 29 pages
Free eBook download for Kindle from 17 September 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 16 September 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 16 September 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, Time Travel
Size: 381 pages
Free eBook download for Kindle from 16 September 2019 onward  

Rating: 5.00 / 5
1 review

ZONE

by Russell Corey

...

Genre: Science Fiction & Fantasy, Hard Science Fiction, Time Travel
Size: 406 pages
Free eBook download for Kindle from 16 September 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 16 September 2019 onward  

Rating: 4.00 / 5
1 review

The Imaginary Revolution - 1

by Roy Jackaman

...

Genre: Fiction, Political, Science Fiction & Fantasy, Science Fiction, Alternative History, Hard Science Fiction, Time Travel
Size: 223 pages
Free eBook download for Kindle from 16 September 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 16 September 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 16 September 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 16 September 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 16 September 2019 onward  

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