Daily Free Books
Free eBook Filters

Keyword(s)

Content
Genres
Settings
Save These Filter Settings

All of the filters are bookmarkable too, so you can also bookmark any page and the filter settings will be kept when you return to the bookmark

Subscribe to get free eBooks every day

Free Kindle eBooks | Hard Science Fiction |

Showing Free eBook 1-30 of 72
  1 2 3  Next

A Curious Alliance

by Patrick Green

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, First Contact, Hard Science Fiction, Space Exploration
Size: 2.48 mb
Free download for Kindle from 25 February 2020 onward  

Rating: 4.40 / 5
5 reviews

Revelations: Rise of the Inquisitor

by R. E. Graham

Genre: Science Fiction & Fantasy, Hard Science Fiction, Metaphysical & Visionary, Military, Space Opera
Size: 380 pages
Free download for Kindle from 24 February 2020 onward  

Rating: 5.00 / 5
1 review

Clotho

by Christopher Keith

Genre: Crime, Thriller & Mystery, Suspense, Science Fiction & Fantasy, Hard Science Fiction, Time Travel
Size: 405 pages
Free download for Kindle from 24 February 2020 onward  

Rating: 3.50 / 5
2 reviews

The Jericho Singularity

by Joel Gerard

Genre: Crime, Thriller & Mystery, Mystery, Fiction, Action & Adventure, Science Fiction & Fantasy, Science Fiction, Adventure, First Contact, Hard Science Fiction
Size: 650 pages
Free download for Kindle from 24 February 2020 onward  

Rating: 4.20 / 5
4 reviews

Tetrastatum: A Time Travel Thriller

by Dr. Richard

Genre: Nonfiction, Politics & Social Sciences, Philosophy, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction
Size: 300 pages
Free download for Kindle from 24 February 2020 onward  

Rating: 3.70 / 5
4 reviews

Oasis (The Last Humans Book 1)

by Dima Zales

Genre: Crime, Thriller & Mystery, Thrillers, Science Fiction & Fantasy, Fantasy, Fiction, Action & Adventure, Romance, Science Fiction, Adventure, Superhero, Cyberpunk, Dystopian, Galactic Empire, Genetic Engineering, Hard Science Fiction, Metaphysical & Visionary, Post-Apocalyptic, Space Exploration, TV, Movie, Video Game Adaptations, Teen & Young Adult, Literature & Fiction, Mysteries & Thrillers
Size: 370 pages
Free download for Kindle from 24 February 2020 onward  

Rating: 5.00 / 5
5 reviews

Terror Form (Centaurean Tribes Book 2)

by Martin D Birch

Genre: Science Fiction & Fantasy, Hard Science Fiction, Space Exploration
Size: 374 pages
Free download for Kindle from 23 February 2020 onward  

Testament: The books of Genaro

by C.A. Hill

Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 375 pages
Free download for Kindle from 23 February 2020 onward  

Architects of a Dying World

by Otto Karasvirta

Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 334 pages
Free download for Kindle from 23 February 2020 onward  

500 Writing Prompts: A Self-Exploration & Self-Help Journal

by Kean Hong Publishing

Genre: Science & Maths, Behavioural Sciences, Science Fiction & Fantasy, Hard Science Fiction
Size: 450 pages
Free download for Kindle from 23 February 2020 onward  

The Silent World: Volume I of the Goddess of Creation Trilogy

by Edward Flynn

Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 321 pages
Free download for Kindle from 23 February 2020 onward  

Rating: 4.50 / 5
5 reviews

Destiny Lost: A Military Science Fiction Space Opera Epic (Aeon 14: The Orion War Book 1)

by M. D. Cooper

Genre: Science Fiction & Fantasy, Science Fiction, Colonisation, Cyberpunk, Hard Science Fiction, Military
Size: 397 pages
Free download for Kindle from 22 February 2020 onward  

Rating: 5.00 / 5
1 review

After/Effects (A Day Out of Time Book 2)

by Kelsey Clifton

Genre: Science Fiction & Fantasy, Science Fiction, Hard Science Fiction
Size: 320 pages
Free download for Kindle from 22 February 2020 onward  

The Zeta Grey War Box Set: (A Science Fiction Thriller)

by D F Capps

Genre: Science Fiction & Fantasy, Science Fiction, Colonisation, Hard Science Fiction
Size: 933 pages
Free download for Kindle from 22 February 2020 onward  

Rating: 5.00 / 5
5 reviews

Waking Iceman

by C R Wahl

Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 496 pages
Free download for Kindle from 22 February 2020 onward  

Dream On - A Virtual Reality novel

by Jackson V.

Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 2410 pages
Free download for Kindle from 21 February 2020 onward  

Conversity: Book Three of the HaChii Convergence

by Patrick O'Connor

Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 314 pages
Free download for Kindle from 19 February 2020 onward  

Mind Hive: A Science Fiction Thriller

by Ellison Jr., Jake Berry

Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 536 pages
Free download for Kindle from 19 February 2020 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 devastating floods. Those that have endured all that has gone before must now fight to survive disease and the very real threat of starvation.

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Dystopian, Hard Science Fiction
Size: 333 pages
Free download for Kindle from 18 February 2020 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 download for Kindle from 18 February 2020 onward  

Critical Mass: Book One of the HaChii Convergence

by Patrick O'Connor

Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 396 pages
Free download for Kindle from 18 February 2020 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 download for Kindle from 17 February 2020 onward  

Rating: 5.00 / 5
4 reviews

Snowing In Johannesburg

by Mark Rodseth

Genre: Science Fiction & Fantasy, Science Fiction, Hard Science Fiction, Time Travel
Size: 411 pages
Free download for Kindle from 16 February 2020 onward  

Rating: 5.00 / 5
2 reviews

Harvest

by Olga Werby

Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 420 pages
Free download for Kindle from 16 February 2020 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 download for Kindle from 16 February 2020 onward  

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

by Patrick O'Connor

Genre: Science Fiction & Fantasy, Superhero, Hard Science Fiction
Size: 315 pages
Free download for Kindle from 16 February 2020 onward  

Rating: 4.80 / 5
5 reviews

Gene Drifters: The Clone Soldier Chronicles-Book III

by D.J. Takemoto

Will normal humans survive the next one hundred years? The Clone Soldiers Chronicles follows a family over those 100 years, from the current epigenetically modified human, to true, and hopefully evolved mutant humans…the new dominant species. In Book I – EpiGenes, our own current society must deal with the newly emerging field of Econo-genetics; who gets genetically altered and at what price? Will it be only the wealthy? Book II- Gene Designers, tells the love story of Dina, a natural mutant, and Dorian, a Gene Designer-synthesized clone. Book III – Gene Drifters tell us what happens when two mutants have kids, and those mutations “take.” The earth is now hot, too hot for up-top living. Roxanne Smoot hauls the Tran-Pacific Underwater Tunnel, a plasmon lined causeway deep beneath the ocean, connecting San Francisco to Tokyo and on to Hong Kong. She a normal, one of the few remaining, and stays safe running those rig hauls. But pirates attempt a rig-jack, almost killing her and her co-pilot. Leo Songtain, the CEO of Stemworm has a thing for her, and not as a best buddy; he’s set a bounty for her safe delivery, and competition is intense. In this teeming under-ocean metropolis, no one is safe. Leo’s legal counselor, Max plans to poison the workers’ food supply, eliminate Roxanne, and take over the clone soldier Black Market. Luckily, an elusive Mossad spy, Michael Segev discovers the plot. In a race against time, he must save the workers and exile Max to #5, the vast, rebel fortress where the mutant population, the Gene Drifters are hiding…waiting for a mutant war. Max will be exiled to the dark world of the Uns.

About The Clone Soldier Chronicles and the Author
I am first and foremost a research Professor of Biochemistry. My area of research is in the eye, hence the eye on all five of the Clone Soldier Chronicles novels. For over 32 years in the lab, I have watched the change in the human species…some from my own research into the delivery of enzymes into the human eye using nanoparticles (http://www.k-state.edu/bmb/department/directory/takemoto/index.html).
The central theme to The Clone Soldier Chronicles is that change, and the question…will normal humans become extinct? Will we scientists be able to extend life, fix genetic defects, and make perfect humans, and, will they still be humans? The answer is mostly yes, but some no’s. We will still be mostly human, but unless we stop the progress of Econo-medicine, there will be levels of humans; there will be those who can and cannot afford the fix. We already see that now…individuals in third world countries are blind from cataracts, while we can afford the fix. And in first world countries, some go blind from macular degeneration while others can afford the biologicals. And now, we scientists can change human genetics.
This is the central theme of The Clone Soldier Chronicles. And while I have tried to make it funny at times, the topics are very real. The first book, Epigenes begins in current times, with a flu pandemic, structuring of economic zones, and rationing of medicines. It is during that time that humans become epigenetically modified. That’s when your DNA becomes modified from your environment, including from what you eat. Those with access to enough medicines and foods become different from the rest of the population.
In book two, a class of super scientists emerges, the senior Gene Designers, those licensed to modify and clone humans. But the rulers just know they can control the situation…keep those clones from escaping.
Book three, the one you have just examined, is called Gene Drifters. That is the process of genetic drift; it is the change in DNA which can occur from contact with life, or in the next generation. It is what takes, becomes permanent enough to be part of an altered order. And the planet is vastly changed by global warming by the time we get to book three.

Genre: Fiction, Humour, Science Fiction & Fantasy, Science Fiction, Dystopian, Genetic Engineering, Hard Science Fiction
Size: 305 pages
Free download for Kindle from 14 February 2020 onward  

Rating: 5.00 / 5
5 reviews

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 his family whatever the cost. It’s about love, sacrifice and finding the truth……the real truth.

Genre: Crime, Thriller & Mystery, Thrillers, Fiction, Action & Adventure, War, Science Fiction & Fantasy, Hard Science Fiction, Time Travel
Size: 381 pages
Free download for Kindle from 13 February 2020 onward  

Rating: 5.00 / 5
1 review

ZONE

by Russell Corey

Genre: Science Fiction & Fantasy, Hard Science Fiction, Time Travel
Size: 406 pages
Free download for Kindle from 13 February 2020 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 that Staples and her crew will need all of the skill, wit, and luck they can muster… or this Jovian run might be their last.

Genre: Fiction, Action & Adventure, Science Fiction & Fantasy, Science Fiction, Adventure, Hard Science Fiction
Size: 394 pages
Free download for Kindle from 13 February 2020 onward  

  1 2 3  Next
Back To Top ^