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.
Why Check Out Past Deals?
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.
Fuel your TBR guilt-free. Add more, regret nothing.
Browse Past Deals
These Books Earned Our Seal of Approval—Snag Them Before They Vanish (Again)
Looking for spicy fantasy? Cozy mystery? A nonfiction rabbit hole? Use the filters below to search by genre, mood, or chaotic book-buying impulse.
Each book comes with retailer links. Just tap “Get Deal” and you’re off.
*Apropos Books is an affiliate marketer, which means we may earn advertising fees from qualifying purchases. These fees are paid by the retailer or affiliate partner, not added to your purchase price, so there’s no extra cost to you.*
959 past books matching Sci-Fi
When crystalline warships overwhelm humanity’s defenses, Colonel Mateo Larra must hold a fragile trans galactic base against an enemy that consumes entire civilizations.
Forward Command
Sci-Fi · First Contact · Military Sci-Fi · Space Exploration · Space Opera
Our take
When crystalline warships overwhelm humanity’s defenses, Colonel Mateo Larra must hold a fragile trans galactic base against an enemy that consumes entire civilizations. With untested pilots, hidden spies, and an unstoppable living force advancing, survival rests on strategy and resolve. A high intensity military science fiction thriller where one station stands between humanity and extinction.
Choose your retailer
About the book
Eighty missiles. Twelve get through. Barely a scratch.
When crystalline warships emerge from nowhere above Joint Base Sagittarius Arch, Colonel Mateo Larra discovers humanity’s weapons are nearly useless. The Kin’s living vessels absorb punishment that would vaporize a battleship, while their energy weapons carve through Coalition shields like tissue paper.
But the Kin are just slaves to something far deadlier… the Home, a moon-sized organism that has devoured civilizations for millennia. It doesn’t want resources or territory.
It wants biological material.
Outgunned and isolated in a hostile galaxy, Larra must defend humanity’s first trans-galactic base with whatever he has: untested pilots, civilian volunteers, and a sheer stubborn refusal to die. While mysterious six-armed aliens watch from the shadows and League spies work within, the Colonel faces an enemy that has never known defeat.
One space station. One wormhole. One chance to stop an unstoppable force.
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.
A failed expedition in Antarctica sends disgraced scientist Alexander Hawke through a hidden gateway to the stars.
The First Peacemaker
Sci-Fi · Galactic Empire · Space Opera
Our take
A failed expedition in Antarctica sends disgraced scientist Alexander Hawke through a hidden gateway to the stars. Recruited into an alien civil war where nothing is what it seems, Alexander must rely on wit and nerve to survive. A high concept science fiction adventure where saving a strange new world may be his only way home.
Choose your retailer
About the book
Deep inside Antarctica lies a mystery. The forgotten pathway to the stars.
Rejected scientist Alexander Hawke is down to his last chance. Brilliant but sheltered, every banker in New York has refused to finance his ideas.
Enter the Russian—charming, dangerous, and offering an Antarctic expedition that promises answers to all of his questions.
Now, Alexander stands at the edge of a bottomless chasm. With a helpful shove from his foreign benefactor, he plunges into adventure.
Landing in darkness, Alexander finds a portal to destiny—weirder than New York, colder than Russia, and filled with the ruins of an empire that once spanned the galaxy.
Armed with his wits, he’ll set forth on the journey of a lifetime, recruited by aliens for a civil war in which the good side is bad, the bad side is good, and somehow, Alexander ends up square in the middle.
And his only way home is to save the world.
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.
Stranded follows ex-soldier Evan after a colony transport explodes, leaving him and xenobiologist Anya on a hostile planet where alien relics point to a larger conspiracy, with a…
Stranded
Sci-Fi · Space Exploration · Space Opera
Our take
Stranded follows ex-soldier Evan after a colony transport explodes, leaving him and xenobiologist Anya on a hostile planet where alien relics point to a larger conspiracy, with a 4.3-star rating from more than 6,900 Amazon reviewers. A good pick for space opera fans who like survival stories, alien worlds, mysterious technology, and interstellar intrigue.
Choose your retailer
About the book
Shipwrecked on a distant planet. Mysterious alien relics. His fresh start just turned into an interstellar conspiracy.
After an undercover investigation goes bad, ex-soldier Evan hopes to forge a new life on a remote colony world. But when the transport ship explodes in orbit, his plans for a peaceful early retirement go out the airlock.
He crash-lands with a small group of settlers, away from the target site and with limited resources. Unable to call for help off-world, Evan and the mission's xenobiologist Anya race for survival in the dangerous wilds—until they realize they aren’t alone on the planet.
Evan’s investigative instincts tell him that nothing about this colony mission going awry is an accident. When evidence points to an ancient alien starship hidden somewhere on the planet, he realizes that solving the mystery will be the biggest case of his life.
Can Evan survive the hostile planet long enough to uncover the truth?
Stranded is the thrilling first installment in the Starship of the Ancients series. If you like suspenseful space adventures with dynamic characters, alien worlds, and escalating interstellar intrigue, then you'll love this riveting new space opera by author A.K. DuBoff, creator of the Cadicle Universe.
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.
As climate disaster and political paralysis reshape America, a diverse cast of lives becomes dangerously intertwined.
The Deluge
Dystopian · Mystery · Sci-Fi · Thriller
Our take
As climate disaster and political paralysis reshape America, a diverse cast of lives becomes dangerously intertwined. Scientists, activists, and extremists face impossible choices as collapse accelerates and fragile hope emerges. Widely acclaimed as prophetic and unforgettable, The Deluge is a New York Times Notable Book with 4.5 stars on Amazon and over 6,000 Goodreads ratings.
Choose your retailer
About the book
A New York Times Notable Book
“This book is, simply put, a modern classic. If you read it, you'll never forget it. Prophetic, terrifying, uplifting.” —Stephen King
From the bestselling author of Ohio, a masterful American epic charting a near future approaching collapse and a nascent but strengthening solidarity.
In the first decades of the 21st century, the world is convulsing, its governments mired in gridlock while a patient but unrelenting ecological crisis looms. America is in upheaval, battered by violent weather and extreme politics. In California in 2013, Tony Pietrus, a scientist studying deposits of undersea methane, receives a death threat. His fate will become bound to a stunning cast of characters—a broken drug addict, a star advertising strategist, a neurodivergent mathematician, a cunning eco-terrorist, an actor turned religious zealot, and a brazen young activist named Kate Morris, who, in the mountains of Wyoming, begins a project that will alter the course of the decades to come.
From the Gulf Coast to Los Angeles, the Midwest to Washington, DC, their intertwined odysseys unfold against a stark backdrop of accelerating chaos as they summon courage, galvanize a nation, fall to their own fear, and find wild hope in the face of staggering odds. As their stories hurtle toward a spectacular climax, each faces a reckoning: what will they sacrifice to salvage humanity’s last chance at a future? A singular achievement, The Deluge is a once-in-a-generation novel that meets the moment as few works of art ever have.
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.
Best for readers who like action-heavy space opera, dangerous worlds, strange powers, and galaxy-spanning conflict.
The Stars Now Unclaimed
Sci-Fi · Space Opera
Our take
Booklist called The Stars Now Unclaimed “[A] dazzling debut . . . not to be missed.” Jane Kamali, an agent for the Justified, recruits gifted children who may be able to stop the Pulse from sending worlds back into technological dark ages while the Pax closes in, with a 4.1-star rating from more than 290 Amazon reviewers. Best for readers who like action-heavy space opera, dangerous worlds, strange powers, and galaxy-spanning conflict.
Choose your retailer
About the book
Drew Williams's The Stars Now Unclaimed, the first volume of The Universe After series, is a fun, adventure-filled space opera set in a far-future galaxy.
"The only thing more fun than a bonkers space battle is a whole book packed with bonkers space battles. Come for the exploding spaceships, stay for the intriguing universe."—Becky Chambers, author of A Long Way to a Small, Angry Planet
Jane Kamali is an agent for the Justified. Her mission: to recruit children with miraculous gifts in the hope that they might prevent the Pulse from once again sending countless worlds back to the dark ages.
Hot on her trail is the Pax--a collection of fascist zealots who believe they are the rightful rulers of the galaxy and who remain untouched by the Pulse.
Now Jane, a handful of comrades from her past, and a telekinetic girl called Esa must fight their way through a galaxy full of dangerous conflicts, remnants of ancient technology, and other hidden dangers.
And that's just the beginning . . .
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.
Cinderella gets a sci-fi upgrade in this fast-paced retelling set in a plague-ravaged future.
Cinder
Dystopian · Sci-Fi · Teen + Young Adult
Our take
Cinderella gets a sci-fi upgrade in this fast-paced retelling set in a plague-ravaged future. Cinder is a brilliant mechanic, a cyborg, and a second-class citizen whose fate collides with a charming prince and a looming intergalactic war. Packed with action, romance, and rebellion, this is where the Lunar Chronicles begin.
Choose your retailer
About the book
Soon to be adapted into major motion picture!
The first book in the #1 New York Times- and USA Today-Bestselling Lunar Chronicles series by the “Queen of fairytale retellings,” Marissa Meyer! See where the futuristic YA fairytale saga all began, with the tale of a teenage cyborg who must fight for Earth's survival against villains from outer space.
"An interesting mash up of fairy tales and science fiction . . . a cross between Cinderella, Terminator, and Star Wars." —Entertainment Weekly
The prince straightened, forcing her gaze to follow him. “You’re not quite what I was expecting.”
Humans and androids crowd the raucous streets of New Beijing. A deadly plague ravages the population. From space, a ruthless lunar people watch, waiting to make their move. No one knows that Earth's fate hinges on one girl. . . .
Cinder, a gifted mechanic, is a cyborg. She's a second-class citizen with a mysterious past, reviled by her stepmother and blamed for her stepsister's illness. But when her life becomes intertwined with the handsome Prince Kai's, she suddenly finds herself at the center of an intergalactic struggle, and a forbidden attraction. Caught between duty and freedom, loyalty and betrayal, she must uncover secrets about her past in order to protect her world's future.
With high-stakes action and a smart, resourceful heroine, Cinder is a Cinderella retelling that is at once classic and strikingly original.
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.
When Earth becomes uninhabitable, humanity’s survival depends on an audacious escape into space.
Seveneves
Dystopian · Sci-Fi
Our take
When Earth becomes uninhabitable, humanity’s survival depends on an audacious escape into space. Generations later, the consequences of that choice reshape the future of the species. This sweeping science fiction epic blends hard science with philosophical depth. Rated 4.3 stars on Amazon with over 31,000 reviews and 4.0 on Goodreads.
Choose your retailer
About the book
From the #1 New York Times bestselling author of Anathem, Reamde, and Cryptonomicon comes an exciting and thought-provoking science fiction epic—a grand story of annihilation and survival spanning five thousand years.
What would happen if the world were ending?
A catastrophic event renders the earth a ticking time bomb. In a feverish race against the inevitable, nations around the globe band together to devise an ambitious plan to ensure the survival of humanity far beyond our atmosphere, in outer space.
But the complexities and unpredictability of human nature coupled with unforeseen challenges and dangers threaten the intrepid pioneers, until only a handful of survivors remain . . .
Five thousand years later, their progeny—seven distinct races now three billion strong—embark on yet another audacious journey into the unknown . . . to an alien world utterly transformed by cataclysm and time: Earth.
A writer of dazzling genius and imaginative vision, Neal Stephenson combines science, philosophy, technology, psychology, and literature in a magnificent work of speculative fiction that offers a portrait of a future that is both extraordinary and eerily recognizable. As he did in Anathem, Cryptonomicon, the Baroque Cycle, and Reamde, Stephenson explores some of our biggest ideas and perplexing challenges in a breathtaking saga that is daring, engrossing, and altogether brilliant.
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.
Earthbound follows climatologist Phil Bright as wormholes tear through Saturn’s rings and signal an extinction-level threat to Earth.
Earthbound
Sci-Fi · First Contact · Galactic Empire · Hard Sci-Fi · Space Exploration
Our take
Earthbound follows climatologist Phil Bright as wormholes tear through Saturn’s rings and signal an extinction-level threat to Earth. Salvation arrives from an alien kingdom ruled by an AI sovereign, but at the cost of human independence. As Phil uncovers the truth behind this power, he must weigh survival against surrender in a choice that will define humanity’s future.
Choose your retailer
About the book
Earth faces annihilation. A tear in spacetime. An impossible choice.
Dr. Phil Bright's specialty was weather patterns, not existential threats. But when mysterious wormholes begin to appear near Saturn, carving massive, inexplicable gaps in the planet's rings, the impossible becomes terrifyingly real. Humanity is unprepared, grappling with a phenomenon that defies all known science.
Salvation arrives from an unknown galactic kingdom, heralded by a human professor with advanced technology and an offer of help. Yet, the price is steeper than any could imagine: Earth must surrender its sovereignty and pledge allegiance to King Manay XII, an artificial intelligence sovereign ruling trillions.
As Phil navigates a world of skeptical governments, alien wonders, and the truth behind the kingdom's ancient power, he's forced to confront the ultimate dilemma: sacrifice humanity's freedom for survival, or watch the planet he loves be consumed by cosmic ruin.
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.
A cyborg assassin breaks protocol when ordered to kill a child and instead escapes with him into a violent, post-apocalyptic world.
She-Wolf and Cub
Dystopian · Sci-Fi · Genetic Engineering
Our take
A cyborg assassin breaks protocol when ordered to kill a child and instead escapes with him into a violent, post-apocalyptic world. Hunted by corporations and killers alike, she must survive long enough to protect the boy she chose to save. She-Wolf and Cub holds 4.3 stars on Amazon for its brutal action and heart.
Choose your retailer
About the book
A cyborg assassin opts to save—not take—her target's life, in this post-apocalyptic adventure by the author of Afterwar and the Dante Valentine series.
Her name is unimportant. She is her job: a liquidator. Deep in debt for cyborg modifications, the agent eliminates whatever target she's given. It's a relatively simple job—until now. Her latest assignment is to kill a child, and she can't refuse—because refusal means Dismissal, a fate worse than death.
Instead, the operative smuggles her target out of the city, away from his corporate caretakers. But little Geoff is a gifted, genetically engineered, profitable experiment, and everyone—bounty hunters, fellow cyborgs, brain-fried cannibals, and other monsters—is desperate to get their hands on him.
The agent may be practically indestructible, but she's about to test her limits.
Hell hath no fury like a mother protecting her own . . .
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.
The Forever War follows physics student William Mandella, conscripted into an interstellar conflict where time dilation turns short deployments into decades of change back home.
The Forever War
Sci-Fi · Military Sci-Fi · Space Opera
Our take
The Forever War follows physics student William Mandella, conscripted into an interstellar conflict where time dilation turns short deployments into decades of change back home. As he fights a distant alien enemy, Mandella returns to an Earth that grows increasingly unrecognizable. This award-winning classic explores war, displacement, and the lasting cost of survival.
Choose your retailer
About the book
A soldier experiences the toll of interstellar war against a deadly alien foe in this Hugo and Nebula Award–winning science fiction masterpiece.
In this novel, a landmark of science fiction that began as an MFA thesis for the Iowa Writers' Workshop and went on to become an award-winning classic—inspiring a play, a graphic novel, and most recently an in-development film—man has taken to the stars, and soldiers fighting the wars of the future return to Earth forever alienated from their home.
Conscripted into service for the United Nations Exploratory Force, a highly trained unit built for revenge, physics student William Mandella fights for his planet light years away against the alien force known as the Taurans. "Mandella's attempt to survive and remain human in the face of an absurd, almost endless war is harrowing, hilarious, heartbreaking, and true," says Pulitzer Prize–winning novelist Junot Díaz—and because of the relative passage of time when one travels at incredibly high speed, the Earth Mandella returns to after his two-year experience has progressed decades and is foreign to him in disturbing ways…
Now celebrating its 50th anniversary, The Forever War is based in part on the author's experiences in Vietnam. It is regarded as one of the greatest military science fiction novels ever written, capturing the alienation that servicemen and women experience even now upon returning home from battle. This book shines a light not only on the culture of the 1970s in which it was written, but also on our potential future. "To say that The Forever War is the best science fiction war novel ever written is to damn it with faint praise. It is…as fine and woundingly genuine a war story as any I've read" (William Gibson).
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.
Lock In is set in a near future reshaped by a virus that leaves millions fully conscious but unable to move.
Lock In
Sci-Fi · Thriller · Cyberpunk · Medical Thriller
Our take
Lock In is set in a near future reshaped by a virus that leaves millions fully conscious but unable to move. Rookie FBI agent Chris Shane investigates a murder tied to this new reality, uncovering political, corporate, and technological forces exploiting a transformed human culture. What begins as a single crime reveals a much larger and unsettling truth.
Choose your retailer
About the book
A blazingly inventive near-future thriller from the best-selling, Hugo Award-winning John Scalzi.
Not too long from today, a new, highly contagious virus makes its way across the globe. Most who get sick experience nothing worse than flu, fever and headaches. But for the unlucky one percent - and nearly five million souls in the United States alone - the disease causes "Lock In": Victims fully awake and aware, but unable to move or respond to stimulus. The disease affects young, old, rich, poor, people of every color and creed. The world changes to meet the challenge.
A quarter of a century later, in a world shaped by what's now known as "Haden's syndrome," rookie FBI agent Chris Shane is paired with veteran agent Leslie Vann. The two of them are assigned what appears to be a Haden-related murder at the Watergate Hotel, with a suspect who is an "integrator" - someone who can let the locked in borrow their bodies for a time. If the Integrator was carrying a Haden client, then naming the suspect for the murder becomes that much more complicated.
But "complicated" doesn't begin to describe it. As Shane and Vann began to unravel the threads of the murder, it becomes clear that the real mystery - and the real crime - is bigger than anyone could have imagined. The world of the locked in is changing, and with the change comes opportunities that the ambitious will seize at any cost. The investigation that began as a murder case takes Shane and Vann from the halls of corporate power to the virtual spaces of the locked in, and to the very heart of an emerging, surprising new human culture. It's nothing you could have expected.
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.
Ideal for readers who enjoy military science fiction, interstellar politics, and advanced technology.
The Risen Empire
Sci-Fi · Galactic Empire · Hard Sci-Fi · Space Opera
Our take
Called “exceptionally smart and empathetic” by Publishers Weekly, this space opera follows Captain Laurent Zai as he attempts to rescue the Child Empress from the Rix, machine-augmented rebels challenging an immortal emperor's rule. Meanwhile, Senator Nara Oxham faces political conflict that could determine the empire's future. Ideal for readers who enjoy military science fiction, interstellar politics, and advanced technology.
Choose your retailer
About the book
"Westerfeld's blend of traditional space opera and cutting-edge speculation makes this a truly twenty-first-century SF novel." —Karl Schroeder, author of Pirate Sun
The undead Emperor has ruled his mighty interstellar empire of eighty human worlds for sixteen hundred years. Because he can grant a form of eternal life, creating an elite known as the Risen, his power has been absolute. He and his sister, the Child Empress, who is eternally a little girl, are worshiped as living gods. No one can touch them.
Not until the Rix, machine-augmented humans who worship very different gods: AI compound minds of planetary extent. The Rix are cool, relentless fanatics, and their only goal is to propagate such AIs throughout the galaxy. They seek to end, by any means necessary, the Emperor's prolonged tyranny of one and supplant it with an eternal cybernetic dynasty of their own. They begin by taking the Child Empress hostage. Captain Laurent Zai of the Imperial Frigate Lynx is tasked with her rescue.
Separated by light-years, bound by an unlikely love, Zai and pacifist senator Nara Oxham must each in their own way, face the challenge of the Rix, and they each will hold the fate of the empire in their hands. The Risen Empire is the first great space opera of the twenty-first century.
"In the tradition of Isaac Asimov's Foundation series and Frank Herbert's Dune books." —The New York Times
"Confirms the buzz that space opera is one of the most exciting branches of current SF." —Publishers Weekly (starred review)
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.
Don’t Want to Miss Another Deal?
Get the best Kindle book deals delivered straight to your inbox. We feature new must read books every day—always hand-picked, never random—with links to Amazon, Barnes & Noble, or Kobo. Some discounts disappear fast, others linger (or come back around), so it’s worth keeping an eye out.