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Free Kindle eBooks | Hard Science Fiction |

Showing Free eBook 1-30 of 277
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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 eBook download for Kindle from 23 January 2020 onward  

Rating: 5.00 / 5
1 review

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

by Kelsey Clifton

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Genre: Science Fiction & Fantasy, Science Fiction, Hard Science Fiction
Size: 320 pages
Free eBook download for Kindle from 23 January 2020 onward  

EPIDEMIC (NEVER SAY THE TRUTH Book 1)

by Salinas Segura, Luis Alberto

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Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 57 pages
Free eBook download for Kindle from 23 January 2020 onward  

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

by D F Capps

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Genre: Science Fiction & Fantasy, Science Fiction, Colonisation, Hard Science Fiction
Size: 933 pages
Free eBook download for Kindle from 23 January 2020 onward  

Rating: 5.00 / 5
5 reviews

Waking Iceman

by C R Wahl

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Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 496 pages
Free eBook download for Kindle from 23 January 2020 onward  

Rating: 5.00 / 5
3 reviews

Fox Theory: A search for the origin

by William Topchiev

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Genre: Science Fiction & Fantasy, Science Fiction, Dystopian, Hard Science Fiction
Size: 209 pages
Free eBook download for Kindle from 23 January 2020 onward  

Rating: 4.00 / 5
1 review

Mind Games

by William Mitchell

Jack Reiner has dealt with some messed-up people in his time. As a psychologist working for the US Military he's encountered PTSD, behavioural instability, the works. His latest patient though promises to be his hardest: humanity's first extraterrestrial contact, a sentient space probe millions of years old, traumatised after seeing one race after another -- including its originators -- annihilate themselves in wars and global catastrophes. It enters the solar system begging for help in ending its existence, but the personnel at the listening station have other ideas. The probe knows things that could propel humanity to a new technological age, and Jack's job is to keep it alive, and keep it talking. But Jack is soon thrown into a game of psychological chess, battling something far more co...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, First Contact, Hard Science Fiction, Space Exploration
Size: 52 pages
Free eBook download for Kindle from 22 January 2020 onward  

Rating: 4.30 / 5
4 reviews

The Veil

by William Bowden

We are not alone in the Universe, and now the age of innocence is over, the time of the Veil upon us - for we have, thus far, survived.

Industrialization, war, technological advancement. It is a common transitional period. A species that destroys itself during the process is not a threat to those who observe from afar.

And in this regard the Veil is many things, its purpose to deliver mankind from temptation, its goal a swift conclusion.

This space odyssey is the third book in the series by the same name, though it can be read on its own merits, the first two books telling of the events that shaped those involved....

Genre: Fiction, Action & Adventure, Science Fiction & Fantasy, Science Fiction, Adventure, First Contact, Hard Science Fiction, Space Exploration
Size: 181 pages
Free eBook download for Kindle from 22 January 2020 onward  

Rating: 4.40 / 5
4 reviews

Hayden's World: Volume 1 (Hayden's World Collection)

by S.D. Falchetti

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Genre: Science Fiction & Fantasy, Science Fiction, Anthologies & Short Stories, Hard Science Fiction, Military, Space Exploration
Size: 274 pages
Free eBook download for Kindle from 22 January 2020 onward  

Death of World City (The Architects Series Book 2)

by Walt Christmas

A huge enclosed city on a world called Adamene is undergoing a massive attack by trillions of energy starved, shape changing constructs, called Rogues. Within days, the city's power will be drained and the city destroyed—along with its one hundred million human residents—unless Scott McKenzie and his four Earth companions can save them.The city is one mile high by three miles wide; it was constructed hundreds of years ago to seal off problems with the outside world and its structure allows no access beyond its own boundaries. However because of their prolonged isolation, the inhabitants have a cultural blind spot, they view the permanent walls and ceilings of the city as inviolate borders to their universe. When the city dies, the residents will be unable to breach the city walls; they...

Genre: Fiction, Action & Adventure, Science Fiction & Fantasy, Science Fiction, Adventure, Hard Science Fiction
Size: 121 pages
Free eBook download for Kindle from 22 January 2020 onward  

Dream On - A Virtual Reality novel

by Jackson V.

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

Rating: 4.00 / 5
10 reviews

The Transmuter's Daughter

by Laurence Dahners

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Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 281 pages
Free eBook download for Kindle from 21 January 2020 onward  

Degrees Book 1: Saving The Earth

by Devon G. Crowe

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Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction
Size: 270 pages
Free eBook download for Kindle from 21 January 2020 onward  

Cognition Chronicles: The Redstone Legacy

by J.R. Bale

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Genre: Crime, Thriller & Mystery, Thrillers, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction
Size: 197 pages
Free eBook download for Kindle from 21 January 2020 onward  

The Zeta Grey War: The Draco (A Science Fiction Thriller)

by D F Capps

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Genre: Science Fiction & Fantasy, First Contact, Hard Science Fiction
Size: 289 pages
Free eBook download for Kindle from 21 January 2020 onward  

Rating: 4.30 / 5
4 reviews

Astrum Vermis

by John Peaseland

Frank exists in the less than caring Olympus Retirement Care Home for the Elderly and Infirm. Daily tormented by Kevin his one to one helper, he is often left in his wheelchair to fend for himself in the back garden plagued by a mist of biting midges. Without family or friends he prays every evening for death to release him from his purgatory but every morning he wakes disappointed. When he is selected by a nefarious organisation for an experimental brain transplant he is without concern; that is until he finds himself transformed into the body of a mechanical spider on a mission to save the world from extraterrestrial killer worms.As Frank becomes stronger, faster and wiser his new employers decide he is more of a liability than an asset and decide to liquidate him. Frank has other ideas....

Genre: Fiction, Action & Adventure, Science Fiction & Fantasy, Science Fiction, Adventure, Hard Science Fiction, Teen & Young Adult
Size: 274 pages
Free eBook download for Kindle from 21 January 2020 onward  

Rating: 4.00 / 5
2 reviews

Koinobi: Book one of the Koinobi Trilogy

by Reid Minnich

How far would you go to help a parasitic insect from the stars?Tweeskzaht nudges human civilization and technology forward from the shadows. Unaware of the war in the stars above it, Earth is in the cross-hairs of both sides. To save her adopted home, she must reveal herself to a small band of humans. Will Mike’s self-sacrifice, Kindra’s cunning, and David’s intelligence be enough to save Earth from becoming a hunting ground?...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, First Contact, Hard Science Fiction
Size: 207 pages
Free eBook download for Kindle from 21 January 2020 onward  

Rating: 3.20 / 5
3 reviews

Any Now

by William Bowden

Physicist Rhoda Mollo has been consigned to the fringes of what can just about be called respectable science, but even there her work is seen as more heretical than theoretical.

But strange results from the world’s largest atom smasher threaten to put her center stage, and in doing so unwittingly expose an Earth shattering discovery being kept secret from the world.

Those in possession of that secret seek to keep attention away from Rhoda by any means, only to find that she is likely a solution to a pressing problem—what is it that they have found, and why do the omnipotent organisation known as the Veil want it?

Pursuit of the answers will take them all to the very edge of reason, as they find themselves confronting the Universe itself.
<...

Genre: Crime, Thriller & Mystery, Thrillers, Fiction, Science Fiction & Fantasy, Science Fiction, First Contact, Hard Science Fiction, Metaphysical & Visionary
Size: 179 pages
Free eBook download for Kindle from 21 January 2020 onward  

Rating: 4.50 / 5
5 reviews

Dekker's Dozen: Weeds of Eden (Dekker's Dozen (The Armageddon Seed Cycle) Book 1)

by Christopher D. Schmitz

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Genre: Science Fiction & Fantasy, Science Fiction, Cyberpunk, Hard Science Fiction, Space Opera, Steampunk
Size: 79 pages
Free eBook download for Kindle from 21 January 2020 onward  

First Symptoms (chaotic by essence Book 1)

by richard deckard

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Genre: Science Fiction & Fantasy, Dystopian, Hard Science Fiction
Size: 26 pages
Free eBook download for Kindle from 20 January 2020 onward  

Rating: 5.00 / 5
5 reviews

Fesarius: The Marquis

by JOHN ADAMS

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Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 247 pages
Free eBook download for Kindle from 20 January 2020 onward  

Rating: 5.00 / 5
3 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 20 January 2020 onward  

Conversity: Book Three of the HaChii Convergence

by Patrick O'Connor

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Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 314 pages
Free eBook download for Kindle from 20 January 2020 onward  

Good Vibrations - Graphic Novel: Book One of the HaChii Concatenation

by Patrick J. O'Connor

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Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 228 pages
Free eBook download for Kindle from 20 January 2020 onward  

Mind Hive: A Science Fiction Thriller

by Ellison Jr., Jake Berry

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Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 536 pages
Free eBook download for Kindle from 20 January 2020 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 20 January 2020 onward  

Nocturnal Reptyle (The Dead Paper Trail Trilogy Book 2)

by Trevor R. Fairbanks

This infection
is merely a reflection
of the bleak void
that has become my soul

This reaction
to the infraction
of a primate society
and its many short comings

So I refuse to be human
in this land of disease
let me become a brand new
darker monstrosity

Abuse and mistrust chaos and lust
the lizard spreads his wings
only to discover
that he has nowhere to fly...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction
Size: 162 pages
Free eBook download for Kindle from 20 January 2020 onward  

Bedside Manner

by William Morrison

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Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 25 pages
Free eBook download for Kindle from 20 January 2020 onward  

Final Answer: The final book in The Dominant Race Series Book 1 Hostile Intentions Book 2 A Curious Alliance

by Patrick Green

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Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: Unknown
Free eBook download for Kindle from 19 January 2020 onward  

Rating: 5.00 / 5
5 reviews

Stratagem

by Dave Blackwell

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Genre: Science Fiction & Fantasy, Dystopian, Hard Science Fiction, Post-Apocalyptic
Size: 221 pages
Free eBook download for Kindle from 19 January 2020 onward  

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