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 282
  1 2 3 4 5  Next

Rating: 5.00 / 5
7 reviews

Fesarius: The Semnorians

by JOHN ADAMS

...

Genre: Science Fiction & Fantasy, Hard Science Fiction, Military
Size: Unknown
Free eBook download for Kindle from 25 February 2020 onward  

Rating: 5.00 / 5
5 reviews

The Invitation: A Journey Into Mankind's Future

by Michael Mckinney

When the President of the United States stands before thousands in Miami, Florida welcoming the world to the start of the Summer Olympic games, the global event is watched by uncounted millions. No one could've foreseen the astonishingly dramatic events that will play out before spectators and be televised throughout the world. Instead of the expected games, the high speed approach of an object that eclipses the moon and soon lands less than a hundred feet from where the president is standing leaves those on the ground and television viewers around the world collectively spellbound. Hundreds of millions watch as an alien creature who calls himself a "Linesian" appears and after projecting an enormous image across the night sky visible to the entire western hemisphere, he takes all of human...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, First Contact, Hard Science Fiction
Size: Unknown
Free eBook download for Kindle from 25 February 2020 onward  

Rating: 5.00 / 5
5 reviews

Mass Are Squared: A Science Fiction Tree, Short Story

by Brian Garrison

It ought to be a simple experiment, except it's not working, and maybe that's a good thing.oo 8 ooThis is a self-contained, science fiction, short story....

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction, Teen & Young Adult
Size: 17 pages
Free eBook 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 eBook download for Kindle from 23 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 eBook download for Kindle from 22 February 2020 onward  

Rating: 5.00 / 5
5 reviews

Fesarius: The Marquis

by JOHN ADAMS

...

Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 247 pages
Free eBook download for Kindle from 19 February 2020 onward  

Rating: 5.00 / 5
5 reviews

Stratagem

by Dave Blackwell

...

Genre: Science Fiction & Fantasy, Dystopian, Hard Science Fiction, Post-Apocalyptic
Size: 221 pages
Free eBook download for Kindle from 18 February 2020 onward  

Rating: 5.00 / 5
5 reviews

The Response (Interstellar - 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 17 February 2020 onward  

Rating: 5.00 / 5
5 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 15 February 2020 onward  

Rating: 5.00 / 5
5 reviews

Unholy Trinity: Book 2 the Hand of Destiny Series

by Martin Jones

...

Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: Unknown
Free eBook 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 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 13 February 2020 onward  

Rating: 5.00 / 5
5 reviews

MARiiMO

by Tyrel Pinnegar

...

Genre: Fiction, Literary Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction
Size: 104 pages
Free eBook download for Kindle from 13 February 2020 onward  

Rating: 5.00 / 5
5 reviews

The Interruption: An EMP Survival story (EMP Interruption Series Book 1)

by Kip Nelson

...

Genre: Science Fiction & Fantasy, Science Fiction, Hard Science Fiction
Size: 1.03 mb
Free eBook download for Kindle from 10 February 2020 onward  

Rating: 5.00 / 5
5 reviews

Throwing Stones: A Short Story

by D.M. Pruden

...

Genre: Science Fiction & Fantasy, Science Fiction, Adventure, Colonisation, Hard Science Fiction
Size: 23 pages
Free eBook download for Kindle from 10 February 2020 onward  

Rating: 5.00 / 5
5 reviews

Emergent: Book 1 of the Cerenovo Series

by Michael S. Nuckols

...

Genre: Crime, Thriller & Mystery, Thrillers, Fiction, Science Fiction & Fantasy, Science Fiction, Cyberpunk, Dystopian, Genetic Engineering, Hard Science Fiction
Size: 311 pages
Free eBook download for Kindle from 09 February 2020 onward  

Rating: 5.00 / 5
5 reviews

Star Game: Book 1, Ascension

by F. P. Trotta

...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, First Contact, Hard Science Fiction, Space Opera
Size: 455 pages
Free eBook download for Kindle from 08 February 2020 onward  

Rating: 5.00 / 5
5 reviews

Docile Free Ebook Preview: Chapters 1-8

by K.M. Szpara

...

Genre: Fiction, Gay & Lesbian, Science Fiction & Fantasy, Science Fiction, Dystopian, Hard Science Fiction
Size: Unknown
Free eBook download for Kindle from 02 February 2020 onward  

Rating: 5.00 / 5
5 reviews

Zoltan

by Lyndon Hardy

...

Genre: Science Fiction & Fantasy, Contemporary, Hard Science Fiction
Size: 70 pages
Free eBook download for Kindle from 02 February 2020 onward  

Rating: 5.00 / 5
5 reviews

Solar Weapon (A Science Fiction Mystery/Thriller)

by D F Capps

A secret group of elite people has broken away from our civilization and now demand the entire world bow to their power.
IF every nation on Earth doesn't surrender total control to that elitist group, a Coronal Mass Ejection will be triggered on the sun, creating an Extinction Level Event that will incinerate the surface of the planet.
FBI agent Jake Hunter and NSA agent Honika Badger scramble through a maze of clues and evidence, desperately trying to discover who is behind this threat, and figure out how they can be stopped, as the resolve of the elite group is terrifyingly demonstrated.
...

Genre: Crime, Thriller & Mystery, Thrillers, Science Fiction & Fantasy, Fantasy, Fiction, Action & Adventure, Science Fiction, Adventure, Alternative History, Hard Science Fiction, Military, Post-Apocalyptic
Size: 286 pages
Free eBook download for Kindle from 02 February 2020 onward  

Rating: 5.00 / 5
5 reviews

Aqueous (Chimera Series Book 2)

by B C Nyren

“Not everything intelligent in the world walks on two legs, you know. Sometimes it swims.”What started as a hard-earned vacation turns into nothing short of a catastrophe for Alex and Ash. Something good, however, may come out of it in the end. Together the scientists face a hard lesson- that there is not always a right answer to every question. Often in fact, there may not be an answer at all....

Genre: Science Fiction & Fantasy, Hard Science Fiction, Romance, Science Fiction
Size: 66 pages
Free eBook download for Kindle from 01 February 2020 onward  

Rating: 5.00 / 5
5 reviews

When the Earth Had a Moon (Part 1)

by A.M. Cunning

...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Colonisation, Dystopian, Hard Science Fiction, Military, Post-Apocalyptic
Size: 221 pages
Free eBook download for Kindle from 31 January 2020 onward  

Rating: 5.00 / 5
5 reviews

ADRIANA: REALITY ONE (BOOK Book 1)

by MARK Lusardi

The pale, slightly blue, alabaster skin of the child makes it seem almost angelic to the mother. Great puss filled blisters decorate the little body, but the face, the face is untouched. Clutch-ing the child to her breast, far more forcefully that she would have ever dared in life, with head thrown back she screams to the sky, a rasping scream of anger and despair. Now, finally, she is ready to kill. To tear down the stars, rip up the world, to spit into the filthy face of God, but she soon runs out of air and her throat burns, so she crouches down to sob hot tears on to the angel face, rocking the child, speaking its name over and over as if she could somehow love it back to life. Drawn by the commotion a man watches. He looks like a tramp or a drunk, but really he is an accountant or was...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, Hard Science Fiction, Metaphysical & Visionary
Size: 363 pages
Free eBook download for Kindle from 29 January 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 eBook download for Kindle from 16 February 2020 onward  

Rating: 5.00 / 5
4 reviews

Mass Transit

by Graeme Ing

Mind over matter is more than a cliche.Controlling starships with her mind is all Emily ever dreamed of. Her graduation from the Telekinesis Traffic Control Academy is assured, unless Dylan, an irritating and cocky fellow student, ruins it for her.The utmost concentration is essential to land a ship from orbit. When Dylan’s jealousy turns to sabotage, thousands of people will die if Emily can’t keep him out of her head. But which of them has the stronger mind?A short story.*** Note: This story is also published in the anthology Mayhem in the Air ***...

Genre: Fiction, Action & Adventure, Science Fiction & Fantasy, Science Fiction, Adventure, Hard Science Fiction
Size: 29 pages
Free eBook download for Kindle from 29 January 2020 onward  

Rating: 5.00 / 5
3 reviews

The Chaos Trilogy: Better Life Through ACME

by Jim Hamilton

The Chaos Trilogy is a story about the past, present, and future of humanity as it struggles to rise above its natural proclivity for self-destruction. From the dawn of the Sumerian Empire to the sunset of the Shoomaran Empire, this is the tale of how it finally succeeds.The Chaos Machine: When the crew of a Shoomaran freighter find themselves stranded on Earth in 5342 BC, they learn that the native inhabitants are destined to die out in only a thousand years. Aided by a machine that can foretell the future, they are able to make minor changes from time to time in order to keep mankind on the path to survival. However, in spite of all of their efforts, one year from now, time will finally run out for everyone.Second Contact: When aliens from different parts of the Universe encounter each o...

Genre: Fiction, Science Fiction & Fantasy, Science Fiction, First Contact, Genetic Engineering, Hard Science Fiction
Size: Unknown
Free eBook download for Kindle from 25 February 2020 onward  

Rating: 5.00 / 5
3 reviews

Fox Theory: A search for the origin

by William Topchiev

...

Genre: Science Fiction & Fantasy, Science Fiction, Dystopian, Hard Science Fiction
Size: 209 pages
Free eBook download for Kindle from 22 February 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 19 February 2020 onward  

Rating: 5.00 / 5
3 reviews

Fesarius: The Speed Trials

by JOHN ADAMS

...

Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: Unknown
Free eBook download for Kindle from 10 February 2020 onward  

Rating: 5.00 / 5
2 reviews

Move Forward One : Origins

by Bruce Polky

How do two young women become the most important humans in history?Bess is training to be the first human on Mars, fighting other hopefuls, the establishment, and her father who thinks she should be home starting a family.Iylsa wants to get away from an abusive past, and Mars is about as far away as you can get.The team is struggling to put a person on Mars when a signal from space changes everything. Mars is no longer the target, they need to go much, much further. The military, the politicians, and others fight over who should go, and what their goals should be. Bess and Iylsa become embroiled in a fight between powers that are used to making their own rules.Deep under Russian ice, Observers from light years away are watching and analyzing. Their experiment is coming to an end, and they ...

Genre: Science Fiction & Fantasy, Hard Science Fiction
Size: 136 pages
Free eBook download for Kindle from 25 February 2020 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 16 February 2020 onward  

  1 2 3 4 5  Next
Back To Top ^