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
He Who Fights with Monsters is the genre-bending isekai sensation with 13M+ Royal Road views and 4.7 stars on Amazon.
He Who Fights with Monsters
Fantasy · Cyberpunk
Our take
He Who Fights with Monsters is the genre-bending isekai sensation with 13M+ Royal Road views and 4.7 stars on Amazon. Middle manager Jason wakes up in a monster-filled fantasy world—with suspiciously evil powers and no pants. Equal parts hilarious, violent, and clever, it’s the LitRPG adventure fans can’t stop leveling up.
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About the book
Jason woke up in a new world. No job. No clue. No pants.
One day he’s a middle manager in an office supply store, the next he’s dropped into a realm of monsters, magic, and mayhem. And while most summoned heroes come armed with holy light or noble strength, Jason’s powers? Well… let’s just say they’re more morally flexible.
Armed with sarcasm, snark, and a suspiciously villainous skillset, Jason faces cults, cannibals, and chaos on his first day alone. But if this world thinks it can break him, it’s in for a surprise.
Adapted from the massively popular Royal Road serial (13M+ views), He Who Fights with Monsters is a wild ride of dark humor, RPG mechanics, and reluctant heroism.
First rule of adventuring? Get pants.
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From the author of How to Survive at the End of the World comes a hilariously bleak isekai where the chosen one arrives thousands of years too late.
Deadworld Isekai
Sci-Fi · Post-Apocalyptic
Our take
From the author of How to Survive at the End of the World comes a hilariously bleak isekai where the chosen one arrives thousands of years too late. With 4.7 stars on Amazon, this offbeat survival fantasy blends deadpan humor, existential dread, and stat-crunching chaos on a lifeless planet. Paradise is canceled.
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About the book
Matt was supposed to die of terminal cancer. Instead, he got isekai’d—courtesy of a wisecracking truck-turned-avatar—and sent to a paradise world in need of a hero.
There’s just one problem: Gaia is dead. Like, post-apocalyptic, no-oxygen, welcome-to-sand-and-silence dead.
Armed with a full stat sheet, maxed-out survival skills, and absolutely zero context, Matt’s stuck on a barren rock with nothing to kill, no quests to complete, and no idea if this is some cosmic joke or the worst isekai placement of all time.
But Gaia might not be completely empty after all. And if Matt wants to survive—hell, if he wants to matter—he’ll have to turn a broken world into something worth living for.
Even if it kills him. Again.
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The war is over—until it isn’t.
A King’s Ship
Sci-Fi · Space Exploration · Space Opera
Our take
The war is over—until it isn’t. A King’s Ship (4.5 stars on Amazon) follows Captain James Somerville into uncharted space on a manhunt turned interstellar powder keg. With echoes of Honor Harrington and The Expanse, this military sci-fi sequel delivers political intrigue, starship combat, and the cost of command.
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About the book
The war is over, but Captain James Somerville’s mission has just begun.
When former Chinese intelligence minister and war criminal Chang vanishes into deep space, Somerville is tasked with tracking him down—alone. Commanding the HMS Endeavour, the Royal Space Navy’s newest exploration cruiser, he ventures to the far edge of known space.
But what begins as a manhunt soon unearths secrets that could shatter humanity’s place in the galaxy. With old enemies lurking and new threats emerging, Somerville must navigate diplomatic firestorms and brutal skirmishes—often outnumbered, always outgunned.
In deep space, honor has a cost.
A King’s Ship is a gripping installment in the Empire Rising series, perfect for fans of Honor Harrington and The Expanse who love high-stakes naval strategy in the stars.
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Fans of Alas, Babylon and The Day After Tomorrow will devour Broken Earth: Destruction—a 4.5-star post-apocalyptic thriller packed with volcanoes, conspiracies, and survival stakes that scorch.
Broken Earth: Havoc
Sci-Fi · Post-Apocalyptic · Techno-Thriller
Our take
Fans of Alas, Babylon and The Day After Tomorrow will devour Broken Earth: Destruction—a 4.5-star post-apocalyptic thriller packed with volcanoes, conspiracies, and survival stakes that scorch. The sequel raises the tension as humanity claws for survival after a planet-wide cataclysm. It’s not the end of the world—yet—but it’s close.
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About the book
On a quiet Tuesday in July, the world ends.
Volcanoes erupt across Iceland. The Azores vanish in fire and sea. The Atlantic Ocean tears itself apart. Humanity reels, and the planet is plunged into chaos.
Former USGS geologist Ben Stone saw it coming—but even his worst-case predictions fall short. His brother, ex-Army Ranger Will Stone, must act before Earth’s magnetic field collapses completely. And whistleblower Max Ungle? He’s known the truth all along—and someone will kill to silence him.
In Broken Earth: Destruction, survival is only the beginning. In the sequel, alliances fray, resources dwindle, and the battle for humanity’s future grows fiercer with every aftershock.
The Earth may be broken. But hope? That’s still up for debate.
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Giant mech battles meet academic sabotage in Hard Reboot, Django Wexler’s punchy sci-fi novella rated 4.4 stars on Amazon.
Hard Reboot
Sci-Fi · Space Exploration
Our take
Giant mech battles meet academic sabotage in Hard Reboot, Django Wexler’s punchy sci-fi novella rated 4.4 stars on Amazon. When researcher Kas is tricked into betting university funds on a robot death match, her study trip turns into a crash course in con artists, chaos, and combat. Short, sharp, and ridiculously fun.
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About the book
Academia was supposed to be safe. Boring, even. Then Kas got conned into a robot death match.
Sent on a research mission to the ruins of old Earth, junior scholar Kas expected to catalog tech relics—not gamble her university’s funding on a hulking mech in a gladiator arena. But when a charming scammer ropes her into high-stakes battle-bot wagers, Kas is pulled deep into a world of rusted metal, underground politics, and planet-sized egos.
Now she’s got one shot to survive the fight, salvage her reputation, and maybe learn a thing or two about trust along the way.
Giant mechs. Rogue scholars. Academic drama with a steel-plated punch. When did higher education start including hazard pay?
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With 4.6 stars on Amazon, this action-packed saga is perfect for fans of Firefly and The Expanse.
Last Stop
Sci-Fi · Space Exploration · Space Opera
Our take
Django Wexler launches a bold sci-fi series with sky battles, sibling tension, and bug-infested doom. Pilot Zham Sa-Yool and his exiled sister, the infamous Diamond Knife, lead a mercenary crew on a death-defying mission beneath the clouds. With 4.6 stars on Amazon, this action-packed saga is perfect for fans of Firefly and The Expanse.
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About the book
In a sky ruled by mercenaries, pirates, and monsters below the clouds, one pilot flies too fast, drinks too much, and dodges death like it's a sport.
Zham Sa-Yool never planned to follow his sister into exile, but when Quedra—once the Diamond Knife of the military—lost everything to political sabotage, he climbed aboard her battered airship Last Stop and never looked back.
Now Quedra commands a crew of desperate misfits, and Zham leads the tiny but gutsy air wing trying to keep them alive. Their latest job? Venture into the lethal cloud floor known as the Layer and hunt for a vanished expedition that may have uncovered a lost haven for humanity.
It’s a chance at redemption—or a one-way ticket to extinction.
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A voiceless woman, a disillusioned soldier, and a divided solar system collide under the weight of control and resistance.
The First Sister
Dystopian · Sci-Fi · Space Opera
Our take
A voiceless woman, a disillusioned soldier, and a divided solar system collide under the weight of control and resistance. Known only as First Sister, a priestess bound to the war machine of Earth and Mars, begins to question her role as power shifts around her. Parallel journeys of loyalty and defiance expose fragile alliances and buried truths. The First Sister is a space opera about agency, oppression, and choosing who you serve.
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About the book
Combining the social commentary of The Handmaid’s Tale with the white-knuckled thrills of Red Rising, this epic space opera filled with “lush prose” (Publishers Weekly) follows a comfort woman as she claims her agency, a soldier questioning his allegiances, and a non-binary hero out to save the solar system.
First Sister has no name and no voice. As a priestess of the Sisterhood, she travels the stars alongside the soldiers of Earth and Mars—the same ones who own the rights to her body and soul. When her former captain abandons her, First Sister’s hopes for freedom are dashed when she is forced to stay on her ship with no friends, no power, and a new captain—Saito Ren—whom she knows nothing about. She is commanded to spy on Captain Ren by the Sisterhood, but soon discovers that working for the war effort is much harder when you’re falling in love.
Lito val Lucius climbed his way out of the slums to become an elite soldier of Venus but was defeated in combat by none other than Saito Ren, resulting in the disappearance of his partner, Hiro. When Lito learns that Hiro is both alive and a traitor to the cause, he now has a shot at redemption: track down and kill his former partner. But when he discovers recordings that Hiro secretly made, Lito’s own allegiances are put to the test. Ultimately, he must decide between following orders and following his heart.
With “a layered, action-filled plot and diverse characters” (Library Journal), The First Sister explores the power of technology, colonization, race, and gender andis perfect for fans of James S.A. Corey, Chuck Wendig, and Jay Posey.
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When thousands of Marines are wiped out before landing, Cadet Eamon Tauk must lead a desperate march across a deadly alien jungle.
Narman’s Pyke
Sci-Fi · Space Exploration · Space Opera
Our take
When thousands of Marines are wiped out before landing, Cadet Eamon Tauk must lead a desperate march across a deadly alien jungle. Narman’s Pyke is a gripping military sci-fi debut packed with bloodthirsty predators, psychological suspense, and slow-burn romance. 4.7 out of 5 stars on Amazon. Fans of The Expanse and Annihilation, this one’s for you.
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About the book
Thousands of Marines died before even landing on Kanaris. Eamon Tauk wasn’t one of them. He only wishes he had been.
Trapped behind enemy lines in a merciless alien rainforest, Cadet Tauk must lead the shattered remnants of his unit across hundreds of kilometers of predator-infested jungle toward a colony that vanished without explanation. Narman’s Pyke is their only hope—if it still exists.
Joining him is Jella Duverii, a sharp-tongued xenobiologist who grew up in the lost colony and knows what stalks the jungle... but not how to stop it.
As unrelenting rain erodes their sanity and vicious creatures close in, Tauk realizes his greatest threat isn’t the alien planet—it’s the people he’s trying to save.
And what’s waiting at Narman’s Pyke may not want them to leave alive.
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A killer comet.
Meet Me at World’s End
Sci-Fi · Teen + Young Adult · Post-Apocalyptic
Our take
A killer comet. A secret bunker. And one college freshman who might not be ready to inherit humanity’s future. Packed with survival suspense, slow-burn romance, and class conflict, this end-of-the-world thriller will grip fans of The 5th Wave and The 100. 4.4 out of 5 stars—apocalyptic sci-fi at its most addictive.
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About the book
When the end of the world arrives, Charlotte Hartland doesn’t get a choice—just a seat in humanity’s last-ditch cryosleep bunker.
A killer comet is days from impact, and soft-spoken freshman Charlotte is suddenly pulled from chaos on her college campus and whisked away by black SUV. Her grandfather, a powerful man with deep government ties, has secured her a berth in the Bunker Reservation Project—a desperate attempt to preserve human life underground.
But survival comes at a cost. Tensions in the bunker mount. Promises fracture. And Charlotte, caught between privilege and a crumbling system, finds herself relying on a cynical construction worker who wants nothing to do with her legacy.
If they can’t trust each other, there may be no future to wake up to at all.
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The award-winning Hell Divers series continues as X leaves the poisoned skies for the deadly seas.
Hell Divers IV: Wolves
Sci-Fi · Post-Apocalyptic
Our take
The award-winning Hell Divers series continues as X leaves the poisoned skies for the deadly seas. Cannibals, monsters, and buried truths await aboard the Sea Wolf. This explosive post-apocalyptic adventure by NYT bestseller Nicholas Sansbury Smith (4.7 stars, 20k+ reviews) is now in Kindle Unlimited for the first time. Dive in while you can.
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About the book
They dive so humanity survives—but this time, survival means sailing straight into the unknown.
After a decade surviving radiation zones and hostile terrain, legendary Hell Diver Xavier “X” Rodriguez takes to the sea aboard the Sea Wolf. His mission? Find the mythical Metal Islands and secure a future for those still clinging to life aboard crumbling airships.
But the open ocean is no haven. Monster storms, mutated sea creatures, and the cannibalistic Cazadores stalk their every move. As truths about the war that devastated Earth come to light, X must navigate more than just the waters—he must chart a course through lies, sacrifice, and an ever-thinning hope.
Because this journey isn’t just for survival—it’s for the salvation of mankind. But can they make it before it’s too late?
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A living island.
Point Nemo
Sci-Fi · Cosmic Horror · First Contact
Our take
A living island. An alien organism. A father-daughter rescue mission with extinction on the line. Point Nemo is Jeremy Robinson at his best—an explosive blend of sci-fi horror, family drama, and high-stakes survival. When the island begins to move, Earth’s fate hangs by a thread. New York Times and #1 Audible bestselling author delivers his most terrifying tale yet.
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About the book
When a catastrophic space disaster strands astrobiologist Julie Rohr in the dead zone of Point Nemo—the most remote place on Earth—her only hope of survival lies in the hands of the last person she wants to see: her estranged father.
Dragged from the Amazon to lead a desperate rescue, mycologist Dr. Finn Maddern joins a team headed for an island that shouldn’t exist—an evolving mass of alien life, born from living space dust and teeming with rapidly mutating creatures.
As the xylem island begins to move toward the world’s oceans, it threatens an extinction-level invasion. Father and daughter must reconcile and face an impossible truth: one life must be sacrificed to save billions.
From New York Times bestselling author Jeremy Robinson comes a high-stakes sci-fi horror thriller where survival demands everything.
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Good for readers who want cinematic survival thrillers with grief, guilt, and high-concept danger.
Whalefall
Sci-Fi · Hard Sci-Fi
Our take
A USA TODAY bestseller called “powerfully humane” by Owen King, Whalefall follows a scuba diver searching for his father's remains who gets swallowed by a sperm whale and has only one hour of oxygen to escape while confronting personal demons, with a 4.1-star rating from more than 3,200 Amazon reviewers. Good for readers who want cinematic survival thrillers with grief, guilt, and high-concept danger.
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About the book
A USA TODAY BESTSELLER
From the Pulitzer Prize–winning author of Angel Down comes a scientifically accurate thriller about a scuba diver who’s been swallowed by an eighty-foot, sixty-ton sperm whale and has only one hour to escape before his oxygen runs out.
Jay Gardiner has given himself a fool’s errand—to find the remains of his deceased father in the Pacific Ocean off the coast of Monastery Beach. He knows it’s a long shot, but Jay feels it’s the only way for him to lift the weight of guilt he has carried since his dad’s death by suicide the previous year.
The dive begins well enough, but the sudden appearance of a giant squid puts Jay in very real jeopardy, made infinitely worse by the arrival of a sperm whale looking to feed. Suddenly, Jay is caught in the squid’s tentacles and drawn into the whale’s mouth where he is pulled into the first of its four stomachs. He quickly realizes he has only one hour before his oxygen tanks run out—one hour to defeat his demons and escape the belly of a whale.
Suspenseful and cinematic, Whalefall is an “powerfully humane” (Owen King, New York Times bestselling author) thriller about a young man who has given up on life…only to find a reason to live in the most dangerous and unlikely of places.
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