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Free Kindle eBooks | Hard Science Fiction |

Showing Free eBook 1-30 of 205
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Devolution of a Species

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 ...

Size: 294 pages

Rating: 4.40 / 5
5 reviews

Free from 19 August 2019

Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction, Teen & Young Adult

Interplanetary Tales

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...

Size: 91 pages

Rating: 4.00 / 5
2 reviews

Free from 19 August 2019

Fiction, Science Fiction & Fantasy, Science Fiction, Anthologies & Short Stories, Alien Invasion, Hard Science Fiction, Post-Apocalyptic

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

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 proc...

Size: 21 pages

Rating: 3.80 / 5
11 reviews

Free from 19 August 2019

Crime, Thriller & Mystery, Thrillers, Fiction, Science Fiction & Fantasy, Science Fiction, Cyberpunk, Genetic Engineering, Hard Science Fiction, Metaphysical & Visionary

101 Visions of Tomorrow (Numbered Tomorrows Book 1)

Phaeton Chamberlain

...

Size: 123 pages

Rating: 2.00 / 5
1 review

Free from 19 August 2019

Fiction, Science Fiction & Fantasy, Science Fiction, Anthologies & Short Stories, Genetic Engineering, Hard Science Fiction

alecs

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 ...

Size: 270 pages

Rating: 4.40 / 5
17 reviews

Free from 19 August 2019

Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction, Military

The Ark Gambit: Book One of The Diaspora

C.G. Lane

...

Size: 85 pages

Rating: 5.00 / 5
2 reviews

Free from 19 August 2019

Science Fiction & Fantasy, Hard Science Fiction, Military, Space Exploration

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

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 every...

Size: 190 pages

Rating: 3.30 / 5
4 reviews

Free from 19 August 2019

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

Sand Trap

Dan Ust

...

Size: 13 pages

Free from 19 August 2019

Fiction, Horror, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction

THE INTERDIMENSIONAL GATE (PARALLEL WORLDS Book 2)

Salinas Segura, Luis Alberto

...

Size: 45 pages

Free from 19 August 2019

Science Fiction & Fantasy, Hard Science Fiction

Any Mouse: RYP#35

Trevor R. Fairbanks

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

Size: 247 pages

Free from 18 August 2019

Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction

Connect

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 ......

Size: 29 pages

Rating: 1.00 / 5
1 review

Free from 18 August 2019

Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction, Military, Post-Apocalyptic

Home Planet: Awakening (Part 1)

T.J. Sedgwick

...

Size: 125 pages

Rating: 4.20 / 5
11 reviews

Free from 17 August 2019

Science Fiction & Fantasy, Hard Science Fiction, Space Exploration

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

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 a...

Size: 275 pages

Rating: 5.00 / 5
2 reviews

Free from 17 August 2019

Fiction, Science Fiction & Fantasy, Science Fiction, Alien Invasion, Hard Science Fiction, Space Opera, Time Travel

Lifeline

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 lif...

Size: 381 pages

Rating: 5.00 / 5
1 review

Free from 17 August 2019

Crime, Thriller & Mystery, Thrillers, Fiction, Action & Adventure, War, Science Fiction & Fantasy, Hard Science Fiction, Time Travel

ZONE

Russell Corey

...

Size: 406 pages

Rating: 5.00 / 5
1 review

Free from 17 August 2019

Science Fiction & Fantasy, Hard Science Fiction, Time Travel

The Jovian Run: Sol Space Book One

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 passen...

Size: 394 pages

Rating: 4.00 / 5
1 review

Free from 17 August 2019

Fiction, Action & Adventure, Science Fiction & Fantasy, Science Fiction, Adventure, Hard Science Fiction

The Imaginary Revolution - 1

Roy Jackaman

...

Size: 223 pages

Rating: 4.00 / 5
1 review

Free from 17 August 2019

Fiction, Political, Science Fiction & Fantasy, Science Fiction, Alternative History, Hard Science Fiction, Time Travel

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

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 Marks...

Size: 164 pages

Free from 17 August 2019

Fiction, Action & Adventure, Science Fiction & Fantasy, Science Fiction, Adventure, Hard Science Fiction

Hi, Guys. I'm Us.

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....

Size: 22 pages

Free from 17 August 2019

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

Entangled: The Chasing Light Series Book 1

Lewis Masters

...

Size: 350 pages

Free from 17 August 2019

Science Fiction & Fantasy, Hard Science Fiction

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

Vikrant Singh

...

Size: Unknown

Free from 17 August 2019

Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction

Andrea the Martian Robot: Human Safety is a Primary Concern

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 V...

Size: 91 pages

Rating: 4.50 / 5
13 reviews

Free from 17 August 2019

Fiction, Short Stories, Science Fiction & Fantasy, Science Fiction, Anthologies & Short Stories, Colonisation, Hard Science Fiction, Space Exploration

The Hearkening: Book Two of the HaChii Convergence

Patrick O'Connor

...

Size: 494 pages

Free from 17 August 2019

Science Fiction & Fantasy, Hard Science Fiction

Insinuate: The books of Genaro

C. A. Hill

...

Size: 328 pages

Free from 17 August 2019

Science Fiction & Fantasy, Hard Science Fiction

When The Fault Breaks: Life Will Never Be The Same (Book I)

Xavier Bruehler

When The Fault Breaks is a post apocalypse book predicated by the rupture of the Cascadia Fault. It is about the stories and lives of survivors of the Mega Quake in a world of chaos and mayhem. It is about one possible way some semblance of a normal life can happen. You will enjoy a mix of...

Size: 520 pages

Rating: 5.00 / 5
2 reviews

Free from 17 August 2019

Fiction, Science Fiction & Fantasy, Science Fiction, Dystopian, Hard Science Fiction, Post-Apocalyptic

MARiiMO

Tyrel Pinnegar

...

Size: 104 pages

Rating: 5.00 / 5
1 review

Free from 17 August 2019

Fiction, Literary Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction

Eye of the Beholder

Jim Heter

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Size: 3.58 mb

Free from 17 August 2019

Science Fiction & Fantasy, Hard Science Fiction

Echo Volume 1: Approaching Shatter

Kent Wayne

In the late 21st century, humanity left Earth due to multiple resource shortcomings aggravated by an acceleration in climate change. They settled Echo, a planet that was nearly a carbon copy of Earth except for being devoid of all but the most basic life forms. Fast forward 1200 years la...

Size: 268 pages

Rating: 4.40 / 5
5 reviews

Free from 17 August 2019

Fiction, Science Fiction & Fantasy, Science Fiction, Dystopian, Hard Science Fiction, Military, Post-Apocalyptic

Forerunner: Back To Earth

David Klamet

He left his family.He left his world.Now Zeke Taylor is preparing to fight the Rogue, the sentient machines who have attacked his adopted home.To prepare for the next attack, when it comes--if it comes-- they've invited him to enter their military academy. There he'll compete against his c...

Size: 458 pages

Rating: 4.40 / 5
3 reviews

Free from 17 August 2019

Fiction, Action & Adventure, Science Fiction & Fantasy, Science Fiction, Adventure, First Contact, Hard Science Fiction, Space Opera

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

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 d...

Size: 40 pages

Rating: 4.00 / 5
4 reviews

Free from 17 August 2019

Fiction, Science Fiction & Fantasy, Science Fiction, Alien Invasion, Colonisation, First Contact, Hard Science Fiction

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