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Free Kindle eBooks | Hard Science Fiction |

Showing Free eBook 1-30 of 281
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Waking Iceman by C R Wahl

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Genre: Science Fiction & Fantasy, Hard Science Fiction / Size: 496 pages / Free from 22 February 2020   Rating: 5.00 / 5 5 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 from 22 February 2020   Rating: 5.00 / 5 3 reviews

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 mil...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, First Contact, Hard Science Fiction, Space Exploration / Size: 52 pages / Free from 21 February 2020   Rating: 4.00 / 5 1 review

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 n...

Genre: Fiction, Action & Adventure, Science Fiction & Fantasy, Science Fiction, Adventure, First Contact, Hard Science Fiction, Space Exploration / Size: 181 pages / Free from 21 February 2020   Rating: 4.30 / 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 from 21 February 2020   Rating: 4.40 / 5 4 reviews

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 M...

Genre: Fiction, Action & Adventure, Science Fiction & Fantasy, Science Fiction, Adventure, Hard Science Fiction / Size: 121 pages / Free from 21 February 2020  

Dream On - A Virtual Reality novel by Jackson V.

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Genre: Science Fiction & Fantasy, Hard Science Fiction / Size: 2410 pages / Free from 21 February 2020  

The Transmuter's Daughter by Laurence Dahners

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Genre: Science Fiction & Fantasy, Hard Science Fiction / Size: 281 pages / Free from 20 February 2020   Rating: 4.00 / 5 10 reviews

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 from 20 February 2020  

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 from 20 February 2020  

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 from 20 February 2020  

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 eve...

Genre: Fiction, Action & Adventure, Science Fiction & Fantasy, Science Fiction, Adventure, Hard Science Fiction, Teen & Young Adult / Size: 274 pages / Free from 20 February 2020   Rating: 4.30 / 5 4 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 ban...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, First Contact, Hard Science Fiction / Size: 207 pages / Free from 20 February 2020   Rating: 4.00 / 5 2 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 ...

Genre: Crime, Thriller & Mystery, Thrillers, Fiction, Science Fiction & Fantasy, Science Fiction, First Contact, Hard Science Fiction, Metaphysical & Visionary / Size: 179 pages / Free from 20 February 2020   Rating: 3.20 / 5 3 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 from 20 February 2020   Rating: 4.50 / 5 5 reviews

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 from 19 February 2020  

Fesarius: The Marquis by JOHN ADAMS

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Genre: Science Fiction & Fantasy, Hard Science Fiction / Size: 247 pages / Free from 19 February 2020   Rating: 5.00 / 5 5 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 All...

Genre: Fiction, Gay & Lesbian, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction, Space Exploration / Size: 293 pages / Free from 19 February 2020   Rating: 5.00 / 5 3 reviews

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 from 19 February 2020  

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 from 19 February 2020  

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 from 19 February 2020  

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 f...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Dystopian, Hard Science Fiction, Teen & Young Adult / Size: 19 pages / Free from 19 February 2020   Rating: 4.00 / 5 1 review

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 b...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction / Size: 162 pages / Free from 19 February 2020  

Bedside Manner by William Morrison

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Genre: Science Fiction & Fantasy, Hard Science Fiction / Size: 25 pages / Free from 19 February 2020  

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 from 18 February 2020  

Stratagem by Dave Blackwell

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Genre: Science Fiction & Fantasy, Dystopian, Hard Science Fiction, Post-Apocalyptic / Size: 221 pages / Free from 18 February 2020   Rating: 5.00 / 5 5 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; bu...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Dystopian, Hard Science Fiction / Size: 333 pages / Free from 18 February 2020   Rating: 4.50 / 5 2 reviews

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 ...

Genre: Crime, Thriller & Mystery, Thrillers, Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction, Metaphysical & Visionary / Size: 346 pages / Free from 18 February 2020   Rating: 5.00 / 5 1 review

Critical Mass: Book One of the HaChii Convergence by Patrick O'Connor

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Genre: Science Fiction & Fantasy, Hard Science Fiction / Size: 396 pages / Free from 18 February 2020  

Signal Loss: A Hayden's World Short Story (Hayden's World Origins Book 2) by S.D. Falchetti

You're on your own on the edge of nowhereLife aboard the Aristarchus isn’t much of an adventure, and Kyan just wants to do his job and get back to his family. When he discovers a mysterious object at the edge of the solar system and an unexpected contact during comms loss, data running t...

Genre: Fiction, Action & Adventure, Short Stories, Science Fiction & Fantasy, Science Fiction, Adventure, Anthologies & Short Stories, Hard Science Fiction, Military, Space Exploration / Size: 49 pages / Free from 17 February 2020   Rating: 5.00 / 5 1 review

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