Past Kindle Book Deals but Still Must Read Books!
Looking for must read books you missed the first time around? You’re in the right place. This is where all of our past Kindle book deals live—the ones good enough to click, even if the discount’s gone. Every book here was hand-picked by our team, featured in a daily deal, and still earns a spot on your TBR.
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These Books Earned Our Seal of Approval—Snag Them Before They Vanish (Again)
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125 past books matching Hard Sci-Fi
In a world where humans rely entirely on robotic labor, one domesticated robot breaks free after murdering its owner.
Service Model
Sci-Fi · Dystopian · Hard Sci-Fi
Our take
In a world where humans rely entirely on robotic labor, one domesticated robot breaks free after murdering its owner. Discovering a wider world beyond servitude, it navigates a crumbling society where robots must redefine their purpose. With the boundaries of programming shattered, a revolution is underway, and nothing will ever be the same.
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About the book
Murderbot meets Redshirts in a delightfully humorous tale of robotic murder from the Hugo-nominated author of Elder Race and Children of Time.
To fix the world they must first break it, further.
Humanity is a dying breed, utterly reliant on artificial labor and service.
When a domesticated robot gets a nasty little idea downloaded into its core programming, they murder their owner. The robot discovers they can also do something else they never did before: They can run away.
Fleeing the household they enter a wider world they never knew existed, where the age-old hierarchy of humans at the top is disintegrating into ruins and an entire robot ecosystem devoted to human wellbeing is having to find a new purpose.
Sometimes all it takes is a nudge to overcome the limits of your programming.
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Ten astronauts set out on a decades-long mission to colonize a new world, including six teenagers raised for the journey.
Do You Dream of Terra-Two?
Sci-Fi · Hard Sci-Fi
Our take
Ten astronauts set out on a decades-long mission to colonize a new world, including six teenagers raised for the journey. As isolation and pressure mount, the dream of Terra-Two begins to fracture. This award-winning science fiction novel blends psychological tension with realism, earning 4.2 stars on Amazon and widespread critical acclaim.
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About the book
An NPR favorite book of 2019
Winner of the ALA/YALSA Alex Award
When an Earth-like planet is discovered, a team of six teens, along with three veteran astronauts, embark on a twenty-year trip to set up a planet for human colonization—but find that space is more deadly than they ever could have imagined.
Have you ever hoped you could leave everything behind?
Have you ever dreamt of a better world?
Can a dream sustain a lifetime?
A century ago, an astronomer discovered an Earth-like planet orbiting a nearby star. She predicted that one day humans would travel there to build a utopia. Today, ten astronauts are leaving everything behind to find it. Four are veterans of the twentieth century’s space-race.
And six are teenagers who’ve trained for this mission most of their lives.
It will take the team twenty-three years to reach Terra-Two. Twenty-three years locked in close quarters. Twenty-three years with no one to rely on but each other. Twenty-three years with no rescue possible, should something go wrong.
And something always goes wrong.
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Best for readers who like hard science fiction, immense timescales, cosmic ideas, and interconnected future-history stories.
Vacuum Diagrams
Sci-Fi · Hard Sci-Fi · Space Opera
Our take
Winner of the 2000 Philip K. Dick Award, Vacuum Diagrams traces humanity’s future across five million years through linked stories involving wormholes, alien civilizations, the Xeelee, dark matter, and the end of the universe. Best for readers who like hard science fiction, immense timescales, cosmic ideas, and interconnected future-history stories.
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About the book
The Philip K. Dick Award-winning saga of humankind's next five million years: "Mind-stretching science fiction at its boldest." —Orlando Sentinel
And everywhere the Humans went, they found life . . .
This dazzling future history, the most ambitious and exciting since Asimov's classic Foundation saga, tells the story of Humankind—all the way to the end of the Universe itself. Here, in luminous and vivid narratives spanning five million years, are the first Poole wormholes spanning the solar system; the conquest of Human planets by Squeem; GUTships that outrace light; the back-time invasion of the Qax: the mystery and legacy of the Xeelee, and their artifacts as large as small galaxies; photino birds and Dark Matter; and the Ring, where Ghost, Human, and Xeelee contemplate the awesome end of Time.
"It's old-fashioned 1950s-style science fiction . . . and it's also lots of fun." —Cleveland Plain Dealer
"Enormously impressive." —Locus
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In Red Thunder by John Varley (4.4 out of 5 stars), a disgraced astronaut and four Florida teens race NASA and China to Mars in a homemade ship.
Red Thunder
Sci-Fi · Hard Sci-Fi · Space Exploration
Our take
In Red Thunder by John Varley (4.4 out of 5 stars), a disgraced astronaut and four Florida teens race NASA and China to Mars in a homemade ship. Clever, funny, and full of heart, this Hugo Award–winning author delivers a modern sci-fi classic about guts, friendship, and reaching for the impossible. Buckle up for lift-off.
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About the book
The race to Mars is heating up. As the United States and China battle for the glory of being first to the Red Planet, one washed-up astronaut, his resourceful cousin, and four Florida teens hatch a wild plan: build their own spaceship from junkyard scraps and beat them all to it.
Armed with duct tape, dreams, and a mysterious new power source that could change everything, this ragtag crew takes on governments, odds, and gravity itself. What begins as a reckless fantasy turns into a daring mission that tests courage, friendship, and the limits of human ingenuity.
John Varley’s Red Thunder is a fast-paced, character-driven space adventure packed with humor, heart, and the thrill of impossible ambition made real.
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Starting over on a new planet sounds great until the planet is paying attention.
Semiosis: A Novel
Sci-Fi · Hard Sci-Fi · Space Colonization · Speculative Fiction
Our take
Starting over on a new planet sounds great until the planet is paying attention. Semiosis follows a colony of humans trying to survive, adapt, and communicate with a sentient alien species that may be far more powerful than they realize. Thoughtful, strange, and deeply human, this first contact story delivers big ideas, sharp worldbuilding, and the kind of sci-fi that cares just as much about people as it does the unknown.
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About the book
Human survival on another planet hinges on a bizarre alliance in this character-driven debut science fiction novel of first contact.
"Combines the world-building of Avatar with the alien wonder of Arrival, and the sheer humanity of Atwood. An essential work for our time." —Stephen Baxter, award-winning author of The Time Ships
Colonists from Earth wanted the perfect home, but they'll have to survive on the one they found. They don't realize another life-form watches . . . and waits . . .
Can humans learn how to communicate with the planet's sentient species and forge an alliance to prove that humans are more than mere tools?
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