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.
No filler. No bots. Just actually good books at prices that might still be suspiciously low.
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Didn’t grab it when you should have? These past picks are still worth your time.
Still discounted? Some deals stick around longer than you'd think.
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These Books Earned Our Seal of Approval—Snag Them Before They Vanish (Again)
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959 past books matching Sci-Fi
A murder on the moors turns a holiday into something colder, stranger, and far more dangerous.
Hounds of Autumn
Steampunk · Sci-Fi · Alternate History
Our take
A murder on the moors turns a holiday into something colder, stranger, and far more dangerous. In Hounds of Autumn, inventor Chloe Sullivan investigates the death of a fellow mechanical expert, following clues that lead through a haunted landscape, a shadowed manor, and the legend of a black mechanical hound. This steampunk mystery blends gothic atmosphere, clockwork intrigue, and classic investigative tension with an eerie edge.
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About the book
They say that the moor has eyes. It is 1890, and the windswept moors hold dark secrets. Chloe Sullivan is an amateur inventor whose holiday takes a dark turn when her friend and colleague, one of the few female mechanical experts in the British Empire, is murdered.
A black mechanical hound roams the moors, but could it have killed a woman? And what secrets are concealed within the dark family manor?
Accompanied by her naturalist husband and clockwork cat, Chloe is determined to see her friend’s killer found.
But some secrets have a terrible cost.
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A lone scrapper uncovers a forbidden AI with a warning that could save the universe.
Star Scrapper
Sci-Fi · Military Sci-Fi · Space Exploration
Our take
A lone scrapper uncovers a forbidden AI with a warning that could save the universe. Branded a criminal, he’s forced into flight across the galaxy, hunted by the very powers meant to protect it. This fast-paced space adventure holds 4.5 stars on Amazon and is praised for its action, worldbuilding, and reluctant hero.
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About the book
The war against the AI was won but a new threat is rising.
Hank Spears is content with his life as a scrapper until he unearths an artificial intelligence who warns him of a grave threat to all life in the universe. Since AI has long been outlawed and anyone caught harboring one is imprisoned or executed, the two must go on the run, fleeing into the far reaches of space.
They must avoid capture, all for the sake of those who would imprison them.
Looking for help from old friends to fight new enemies, Hank must find a way to save himself so that he can save the universe.
Can this simple scrapper become the hero the universe needs before it’s too late?
Find out in Star Scrapper, the thrilling new science fiction series from USA Today Bestselling Author J.N. Chaney and Matthew A. Goodwin.
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Winning the ultimate game should have been the end.
Ready Player Two
Dystopian · Sci-Fi
Our take
Winning the ultimate game should have been the end. In Ready Player Two, Wade Watts uncovers a hidden technology left behind by James Halliday that transforms the OASIS and sparks a new, perilous quest. As an unstoppable rival emerges with catastrophic ambitions, Wade must confront the cost of innovation and obsession. A high-stakes virtual adventure that blends nostalgia with near-future consequence.
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About the book
#1 NEW YORK TIMES BESTSELLER • The thrilling sequel to the beloved worldwide bestseller Ready Player One, the near-future adventure that inspired the blockbuster Steven Spielberg film.
NAMED ONE OF THE BEST BOOKS OF THE YEAR BY THE WASHINGTON POST • “The game is on again. . . . A great mix of exciting fantasy and threatening fact.”—The Wall Street Journal
AN UNEXPECTED QUEST. TWO WORLDS AT STAKE. ARE YOU READY?
Days after winning OASIS founder James Halliday’s contest, Wade Watts makes a discovery that changes everything.Hidden within Halliday’s vaults, waiting for his heir to find, lies a technological advancement that will once again change the world and make the OASIS a thousand times more wondrous—and addictive—than even Wade dreamed possible.
With it comes a new riddle, and a new quest—a last Easter egg from Halliday, hinting at a mysterious prize.
And an unexpected, impossibly powerful, and dangerous new rival awaits, one who’ll kill millions to get what he wants.
Wade’s life and the future of the OASIS are again at stake, but this time the fate of humanity also hangs in the balance.
Lovingly nostalgic and wildly original as only Ernest Cline could conceive it, Ready Player Two takes us on another imaginative, fun, action-packed adventure through his beloved virtual universe, and jolts us thrillingly into the future once again.
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Best for readers who like space opera with alien invasion, military action, found tech, and interstellar war.
Return to the Galaxy
Sci-Fi · Military Sci-Fi · Space Opera
Our take
A London Book Festival 2025 winner and #1 Best Seller in seven Amazon categories, Return to the Galaxy follows reborn special forces veteran Ewan Scott and haunted Frigate Captain Velal as alien enemies threaten Earth and the Saret Federation, with a 4.4-star rating from more than 1,300 Amazon reviewers. Best for readers who like space opera with alien invasion, military action, found tech, and interstellar war.
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About the book
Return to the Galaxy – The multi-award-winning series that hit #1 Best Seller in seven Amazon categories
Winner of the London Book Festival 2025 (Science Fiction)
The Humans Are Coming. The Galaxy Better Be Ready.
The astonishing truth? The human race didn’t evolve on Earth.
Ewan Scott was a dying SAS veteran, until a 300-year-old alien AI Avatar offered him a second chance: rebirth in a bio-engineered body, fitter, stronger, and movie-star handsome. His mission? Reunite humanity with its parent civilization, the Saret Federation, before merciless enemies erase all life on Earth.
Frigate Captain Velal, haunted by her past and bound by impossible orders, fights to save what’s left of her civilization. As worlds fall to alien invasion and nuclear fire, the ancient monsters she dreads are hunting for Earth.
An ancient empire falls to betrayal. A merciless enemy closes in. Earth lies defenseless. Its last hope a flawed hero reborn, and a woman who will fight until the stars go dark.Join Ewan, Velal, and wise-cracking Jera in an epic, fast-paced space opera.
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Good for readers who want epic sci fi fantasy with multiple POVs, political intrigue, betrayal, and shifting allegiances.
Falling Into Shadow
Dystopian · Sci-Fi · Space Opera
Our take
Called “A richly imagined fantasy adventure full of slashing action and nervy psychological tension” by Kirkus Reviews, Falling Into Shadow follows a deadly moon where stolen land, Stem Shifters, civil war, cults, and Shadow Demons collide, with a 4.6-star rating from 56 Amazon reviewers. Good for readers who want epic sci fi fantasy with multiple POVs, political intrigue, betrayal, and shifting allegiances.
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About the book
On the moon Novena, when the seasons turn deadly, you move, or you die. As the frigid cold creeps in, the country of Ionia prepares to move it’s people to safety only to discover that traitors have stolen their land. Can they win it back before their homes turn to ice?
This Sci Fi Fantasy epic follows multiple POV characters. Among them are Stem Shifters: people who can alter Space, Time, Energy, and Matter with their minds. Some, like Sophie Song, are peacekeepers, while others have joined the turncoats setting up a high-stakes civil war.
Isaak Kaldera. A Stem Shifter with the ability to peek into the future sees Isaak ending the war. Will Isaak prove to be a hero or has the act of witnessing his future changed its course?
Dante Zotto. His father is a corrupt oligarch. Will Dante get sucked into his nefarious world or will he remain true to his Stem Shifter daughter?
Renette Imari. A government worker struggling to distribute too few resources to too many people while her own family falls to the charms of a cult leader.
Kyra Anderton. An off-world miner who is attacked by Shadow Demons. She cuts off her own leg to prevent infection. Did it work? As Kyra heads back to Novena we have to wonder, is she is bringing a deadly plague with her?
Falling Into Shadow is a story of power, betrayal, and revenge, where allegiances shift, and no one knows who is good and who is evil. Fans of Dune, Red Rising, and The Expanse will be swept into this unforgettable saga.
If you crave epic science fiction fantasy with political intrigue and heart, Falling into Shadow from two-time Emmy Award winning writer Mike Palleschi is waiting for you. Start your journey now!
"A richly imagined fantasy adventure full of slashing action and nervy psychological tension." Kirkus Reviews.
GOLD MEDAL WINNER for BEST SCIENCE FICTION / DYSTOPIAN in the GLOBAL BOOK AWARDS 2025
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A resurrected prehistoric sea monster escapes into open water, turning scientific triumph into deadly disaster.
Cone
Horror · Sci-Fi
Our take
A resurrected prehistoric sea monster escapes into open water, turning scientific triumph into deadly disaster. Haunted by guilt, its creator joins a desperate hunt that quickly becomes a fight for survival. This deep-sea thriller blends science, suspense, and relentless action, earning 4.2 stars on Amazon and strong reader praise.
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About the book
At first, it was hailed as a miracle of science.
In reality, it was a catastrophic mistake.
Dr. Elliot Alere never imagined his greatest achievement would become his greatest regret. Driven by ambition and the promise of medical breakthroughs, he accomplished the impossible: resurrecting an extinct marine predator—the cameroceras.
He believed the ancient cephalopod could unlock new frontiers in science.
Instead, he unleashed a monster.
When the creature escapes mid-transport, it vanishes into the waters surrounding Green Pastures, a quiet island off the West Coast. Over forty feet long, armed with ten muscular arms tipped with razor-sharp talons, and protected by a massive, cone-shaped shell, the beast wastes no time racking up a body count.
Haunted by guilt, Alere persuades his employer to mount a high-risk operation to recapture the creature. He joins forces with an idealistic marine biologist, a washed-up crab boat captain, and a group of ruthless trophy hunters.
The hunt proves to be the last for many involved, for nothing is safe from the creature’s mighty arms and the pointed tip of its immense CONE.
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In Force Majeure, Chase struggles to claim his identity as a prince while preparing for the weight of imperial rule.
Force Majeure
Sci-Fi · Galactic Empire · Military Sci-Fi · Space Opera
Our take
In Force Majeure, Chase struggles to claim his identity as a prince while preparing for the weight of imperial rule. Surrounded by doubt, political pressure, and a criminal past that refuses to stay buried, he uncovers truths about his family that may decide his fate. John Van Stry continues a space opera of power, identity, and survival.
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About the book
Chase is finally coming to understand just what being Prince Chase means, and what becoming emperor to the Solarian Empire will mean as well. He's getting better at the job every day, now if only he could just bring himself to tell Captain Witner and the other members of the command staff that he really is a prince, and not the fraud they all believe he is.
Another thing he is starting to learn more about is Imperial politics and the kinds of things princes and emperors are known for, as well as expected to do. He's also discovering that there are a lot of people who still believe he's a fraud, because of Neill's efforts at proclaiming him as such. Of course his criminal background isn't helping him much there.
What is helping him however are some of the people he's discovering, and some of the things he's learning about his family from them. There are still a good many surprises in store for Chase. Hopefully none of those surprises will end up killing him.
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A nuclear detonation at a biohazard facility unleashes a contagion that rewrites life on Earth.
Darwin Contagion
Dystopian · Sci-Fi · Thriller
Our take
A nuclear detonation at a biohazard facility unleashes a contagion that rewrites life on Earth. Assigned to protect the president, a Secret Service agent emerges into a world overrun by prehistoric mutations and collapsing humanity. Darwin Contagion is a relentless post apocalyptic survival thriller with 4.4 stars on Amazon and Goodreads.
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About the book
A harrowing post-apocalyptic series by Walt Browning about surviving the consequences of man’s arrogance.
Mankind's dominance has come to an end...
When a terrorist group detonates a small nuclear device at a level four biohazard facility, it releases the infection vectors stored within and creates a contagion that devastates the planet.
Entire species are wiped out, while those that survive are genetically transformed into prehistoric mutations of their former self.
Secret Service agent Alex Durham is assigned to protect the president. As the dangers of the expanding nuclear fallout become apparent, he accompanies the country’s leadership as they seek shelter from the impending contagion.
When they emerge weeks later, the global aftermath of the terrorist attack leaves the survivors struggling to find safety in a world that has regressed millions of years. Creatures from the past and those newly created rise to challenge mankind’s dominance.
All that matters now is survival...
Walt Browning, the bestselling author of Extinction Survival, returns with this harrowing post-apocalyptic survival series. Don’t miss this tale about people trying to survive the consequences of man’s arrogance, all while somehow maintaining their humanity.
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A secret excavation uncovers more than limitless power on a remote island.
Unearthed
Horror · Sci-Fi · Thriller
Our take
A secret excavation uncovers more than limitless power on a remote island. When a meteorite awakens a mutated prehistoric predator, survival becomes brutal and immediate. As the jungle turns lethal, one operative must fight back against ancient horror and corporate greed. This high-octane thriller holds 4.4 stars on Amazon and strong reader acclaim.
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About the book
In the aftermath of global war, the Globus Corporation has its hands in governments around the world. On the isolated island of Delta-5 Caprona, it begins a high-stakes excavation—recovering fragments of a meteorite that crashed 100 million years ago. Inside: a mineral with limitless power.
But buried within is something far more dangerous.
When an explosion rocks Dig Site Four, security operative Lon Bergis finds only corpses—and enormous footprints vanishing into the dense jungle. Then a scout aircraft goes down without warning, and the nightmare begins.
From the shadows emerges a mutated Spinosaurus, awakened and transformed by the meteorite’s strange element. Towering. Relentless. Unstoppable.
As the island descends into terror, Bergis must lead a desperate fight for survival—against a monster from prehistory and the ancient horrors that have been UNEARTHED.
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An outcast hunter breaks the laws of Dakkar and draws the attention of a ruthless horde king who claims her instead of killing her.
Claimed by the Horde King
Romantasy · Sci-Fi
Our take
An outcast hunter breaks the laws of Dakkar and draws the attention of a ruthless horde king who claims her instead of killing her. What begins as captivity turns into a dangerous bond forged in cold nights and brutal loyalty. Claimed by the Horde King delivers primal romance, emotional tension, and survival-driven desire. With 4.5 stars on Amazon and over 17,000 Goodreads ratings.
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About the book
She broke their laws. Now, he has come to punish her…
In my human settlement on the hostile plains of Dakkar, I am an outcast, a strange girl orphaned since birth, alone, and dreaming of a life I don't have. I hunt to survive, though it is forbidden, though it breaks the strict Dakkari laws that we all must follow.
When my desperate actions catch the attention of a Dakkari horde king—a cold, powerful, and merciless warrior leader, with eyes like flint and a body like steel—he seeks to punish me…and he succeeds.
But then he does the unexpected.
Instead of taking my life, he claims me as his own.
He steals me from my village and brings me back to his battle-bred horde. There, I warm his bed. I make bargains with him on starry, cold nights. I look into his grey eyes and see not a monster, but a demon king who captures my soul.
But demons have a way of never letting go…and as the cold season descends upon Dakkar, I begin to wonder if I even want him to, even when it hurts.
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Long after Humanity’s fall from power, ancient artifacts resurface and reignite a galactic race for control.
Apex
Sci-Fi · Galactic Empire · Hard Sci-Fi · Space Opera
Our take
Long after Humanity’s fall from power, ancient artifacts resurface and reignite a galactic race for control. As rival factions close in on a discovery that could reshape the stars, the past threatens to repeat itself. This epic standalone space opera holds 4.5 stars on Amazon and is praised for its scale and worldbuilding.
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About the book
An epic space adventure, Aer-ki Jyr's Apex is a breathless race to the ultimate prize, with the very fate of the stars hanging in the balance.
A new dawn is coming . . .
It's been eons since Humans controlled the universe. Defeated by a mysterious enemy, the downfall of Humanity brought about a virtual dark age. Culture and technology stagnated in their absence. But now, trade is once again flourishing as Human artifacts resurface throughout the galaxy, resurrecting long forgotten advancements.
And one such discovery might very well alter the course of the future forever.
From the author of the epic Star Force Origin series, Aer-ki Jyr's impressive galactic world-building is on full display in this stand-alone space opera adventure reminiscent of Ryk Brown, Christopher Nuttall, B.V. Larson, and Evan Currie.
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A failed physicist stumbles into a discovery that turns consciousness, reality, and belief into something far more dangerous than theory.
The Flicker Men
Sci-Fi · Thriller · Hard Sci-Fi · Suspense
Our take
A failed physicist stumbles into a discovery that turns consciousness, reality, and belief into something far more dangerous than theory. In The Flicker Men, Eric Argus revisits a foundational quantum experiment and uncovers implications that draw scrutiny from both the scientific world and forces operating in the shadows. It fits readers looking for hard science fiction that blends high-concept ideas with paranoia and existential dread.
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About the book
A scientist's discovery puts him the crosshairs of dangerous people determined to silence him—and his findings—in this hard science fiction thriller.
"A high-speed thriller. . . . The pages turn rapidly with well-orchestrated suspense." —New York Times
A quantum physicist shocks the world with a startling experiment, igniting a struggle between science and theology, free will and fate, and antagonizing forces not known to exist
Quantum physicist Eric Argus is a washout. His prodigious early work clouded his reputation and strained his sanity. But an old friend gives him another chance, an opportunity to step back into the light.
With three months to produce new research, Eric replicates the paradoxical double-slit experiment to see for himself the mysterious dual nature of light and matter. A simple but unprecedented inference blooms into a staggering discovery about human consciousness and the structure of the universe.
His findings are celebrated and condemned in equal measure. But no one can predict where the truth will lead. And as Eric seeks to understand the unfolding revelations, he must evade shadowy pursuers who believe he knows entirely too much already.
"If Stephen Hawking and Stephen King wrote a novel together, you'd get The Flicker Men. Brilliant, disturbing, and beautifully told." —New York Times–bestselling author Hugh Howey
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