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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959 past books matching Sci-Fi
In the shadow of Lagrange, the bodies of wealthy seniors tell a chilling story—stolen identities, emptied fortunes, and vanishing killers.
Lagrange Rising
Mystery · Sci-Fi
Our take
In the shadow of Lagrange, the bodies of wealthy seniors tell a chilling story—stolen identities, emptied fortunes, and vanishing killers. Interworld Marshal Cuss Abbott, relentless and haunted, teams with the enigmatic Ygo to unravel a web of greed and murder. But as the hunt stretches across worlds, each answer reveals a darker truth. How far will justice drive him before it consumes him?
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About the book
Wealthy seniors vanish from Nova Terra on the Moon, their bodies later dumped in Lagrange—stripped of ID implants, their fortunes drained.
Cuss Abbott, a determined Interworld Marshal, takes the case. With a growing list of victims and relentless political pressure, he has few leads and dangerous foes.
The criminals leave no trace, vanishing after every gruesome act. Paired with his enigmatic enhanced partner, Ygo, Cuss uncovers a trail that leads to unthinkable horrors.
As the investigation spirals, a devastating confrontation pushes Cuss to his limits. His pursuit becomes a relentless, cross-world hunt for justice, fueled by loss and anger.
Will he bring the killers to justice, or will the truth behind the murders destroy him first?
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As a deadly outbreak ravages Portland, Alissa and her neighbor Jordan fight to escape a city overrun by the undead.
Until the End
Dystopian · Romance · Sci-Fi
Our take
As a deadly outbreak ravages Portland, Alissa and her neighbor Jordan fight to escape a city overrun by the undead. Both carry dangerous secrets—Alissa's illness threatens her sanity, while Jordan is driven by a hidden motive to protect her. Together, they must survive the chaos, or risk losing everything.
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About the book
A deadly outbreak has ravaged Portland, turning the city into a war zone between the living and the undead.
Alissa, struggling with her own mysterious illness, is rescued by her neighbor Jordan, and together they plan to escape before quarantine traps them inside the city with the infected. But Alissa’s illness makes her unpredictable—and Jordan is hiding a secret of his own.
As they battle through the chaos, the bond between them grows, but so does the danger. With zombies closing in and the city's collapse imminent, they realize that survival will depend on sticking together—if their secrets don’t tear them apart first.
Can they outrun the infection, or will their hidden truths destroy them before the undead do?
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Hudson Powell and Tory Bellona, famed Star Scavengers, uncover deadly secrets within alien starship ruins.
Star Guardian
Sci-Fi · Space Exploration · Space Opera
Our take
Hudson Powell and Tory Bellona, famed Star Scavengers, uncover deadly secrets within alien starship ruins. But when a fanatical cult revives a ruthless AI bent on annihilation, their mission shifts from treasure hunting to survival. The fate of humanity hinges on finding and securing ancient crystals before all is lost.
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About the book
The galaxy’s top treasure hunters must become humanity’s last line of defense.
Hudson Powell and Tory Bellona are the infamous Star Scavengers, risking their lives to unearth alien artifacts from crashed starships scattered across the galaxy. They navigate dangerous missions—and each other—while evading ruthless rivals and syndicates eager to claim their finds.
But when a violent cult resurrects the very AI that obliterated entire civilizations eons ago, Hudson’s world shatters. Led by zealot Amelia Ash, the cult aims to empower this ancient threat with rare alien crystals—deadly resources that Hudson and Tory are now desperate to secure first.
With humanity’s survival on the line, Hudson and Tory face an impossible race against a revived, malevolent entity.
Can they outpace destruction itself?
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In Antarctica’s frozen silence, drilling expert Gabriel Palmer witnesses a meteorite crash—but it’s more than rock and ice.
ICE
Mystery · Sci-Fi · Space Exploration
Our take
In Antarctica’s frozen silence, drilling expert Gabriel Palmer witnesses a meteorite crash—but it’s more than rock and ice. A long-buried threat awakens, unleashing horrors that could end humanity. Isolated and out of time, Gabriel must face an ancient force and the haunting realization that survival may come at the ultimate cost. What rises from the ice may never sleep again.
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About the book
Gabriel Palmer, a seasoned drilling expert, thrives in the isolation of Antarctica’s frozen expanse. But when a meteorite crashes into the icy wasteland, it awakens a deadly force buried deep beneath the surface.
As strange events unfold, Gabriel uncovers a terrifying truth: the meteorite has unleashed an ancient threat capable of wiping out humanity. Cut off from the world and racing against time, Gabriel must confront the horrors beneath the ice, pushing his skills and courage to their limits.
With the fate of humanity hanging by a thread, Gabriel faces an impossible choice: risk everything to stop the looming extinction—or watch the world fall to an unstoppable force.
Can one man stand against the darkness rising from the ice?
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A summer job takes a deadly turn when Dave recovers The Artifact from a sunken submarine.
ARTIFACT
Mystery · Sci-Fi · Techno-Thriller
Our take
A summer job takes a deadly turn when Dave recovers The Artifact from a sunken submarine. Hunted by ruthless enemies, he’s thrust into a web of danger and conspiracy. As The Artifact’s secrets unravel, its immense power threatens to destroy everything. Out of his depth and out of time, Dave must face impossible odds to protect a world on the brink of collapse.
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About the book
What starts as a summer job turns into Dave’s worst nightmare. Recovering a mysterious object from a sunken submarine should’ve been routine—but The Artifact holds secrets powerful enough to upend reality itself.
Thrust into a deadly conspiracy, Dave finds himself hunted by relentless enemies who will kill to claim The Artifact. Outmatched and terrified, he must rely on wits and courage he never knew he had.
As the stakes soar and the danger grows, Dave uncovers a chilling truth: The Artifact’s power could either save the world or doom it forever. The clock is ticking, and the line between survival and catastrophe is razor-thin.
Can Dave outmaneuver a shadowy force to protect The Artifact, or will his discovery bring the end of everything?
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A walk in the woods turns extraordinary when Alex stumbles upon a hidden spaceship.
Find the Stars
Sci-Fi · First Contact · Hard Sci-Fi
Our take
A walk in the woods turns extraordinary when Alex stumbles upon a hidden spaceship. Armed with an AI and nanomachines, he wields power to reshape the world—and beyond. But as shadowy forces close in and his empire grows, Alex faces a harrowing question: will he become a savior, or the architect of the galaxy’s downfall?
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About the book
Alex thought it was just another walk in the woods—until a frantic chase through the trees led him to a hidden spaceship. Inside, he discovers advanced technology: an AI with limitless intelligence and nanomachines capable of reshaping matter itself.
But immense power comes with even greater challenges. As Alex experiments with his newfound abilities, he realizes he’s not the only one with a stake in this technology. Shadowy forces across the galaxy will stop at nothing to control it, and Alex must decide how far he’s willing to go to protect his vision.
As he builds what could become a Nano Empire, alliances shift, enemies multiply, and the line between savior and conqueror begins to blur. Will Alex transform the galaxy—or destroy it?
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Betrayed by his own and cast aside, ex-Navy Officer Cliff Rawlins returns to a galaxy unraveling.
Rawlins’ Redemption
Sci-Fi · Space Exploration · Space Opera
Our take
Betrayed by his own and cast aside, ex-Navy Officer Cliff Rawlins returns to a galaxy unraveling. The Union is collapsing, piracy looms, and old enemies lurk in the shadows. With interstellar travel spiraling into chaos, Cliff risks everything to forge a mercenary navy—but in the battle for survival, the line between justice and vengeance blurs. Will redemption cost him everything?
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About the book
The Union is gone. Interstellar travel is no longer safe. Enter ex-Union Navy Officer Cliff Rawlins.
More than four years after being wrongfully stripped of his rank and decorations in a court-martial stacked against him, ex-Union Navy Officer Cliff Rawlins suddenly finds himself a free man.
The galaxy to which he returns, however, is changing.
The Union of Free Planets is on the verge of dissolving. Many of the shadowy political players working behind the scenes to end the Union are the same people who sent Cliff away. Yet, in the coming political upheaval, Cliff glimpses an opportunity.
For centuries, people have relied upon the Union Navy to act as the policeman of the shipping lanes. With the end of the Union will come the end of the navy. Interstellar commerce is about to become fraught with danger.
Cliff has a way to use his expertise to provide secure transport across interstellar space. A mercenary navy to defend settled space and get rich doing it. After all, he deserves it for what he went through.
But there are enemies old and new who want him to fail. And this time, they want him dead...
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In a dying world, Ava Mendoza fights for justice amid hatred.
Species Traitor
Dystopian · Sci-Fi
Our take
In a dying world, Ava Mendoza fights for justice amid hatred. Her connection with Finn, a Veilorian, grows as a radical mayor threatens Veilorian rights and her cousin’s forbidden marriage. As tensions escalate, Ava must risk everything to stand against prejudice in a world on the brink of destruction.
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About the book
My name is Ava Mendoza, and I am a species traitor.
Earth is on the brink of collapse, and the Veilorians—refugees from a destroyed planet—are treated as enemies, banished to a fenced-off District far from humanity’s last habitable land. Most humans pretend they don’t exist, but Ava refuses to look away, especially after her cousin marries a Veilorian and risks everything to stand for justice.
When Ava meets Finn, a Veilorian unlike anyone she’s known, their connection changes her life. But as a radical new mayor stirs hatred and division, the call for harsher laws threatens to destroy everything Ava holds dear. Her cousin’s marriage. Her growing bond with Finn. Even her freedom.
With tensions rising, Ava must decide how far she’ll go to fight for what’s right—no matter the cost.
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Gritty, action-heavy, and built for readers who like their sci-fi with combat, chaos, and high-stakes survival.
Antecedents’ Legacy
Sci-Fi · Space Opera
Our take
Antecedents' Legacy drops a battle-hardened military contractor onto an alien world and immediately makes his survival everyone’s problem. After a mission goes spectacularly sideways, Zander Greaves is ripped from Earth, stranded in a brutal new reality, and forced to adapt fast as giant war machines, monstrous bugs, and a deadly new universe close in around him. Gritty, action-heavy, and built for readers who like their sci-fi with combat, chaos, and high-stakes survival.
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About the book
Zander Greaves grew up in Compton, California— violence, pain, and strife were his life for his first eighteen years. His personality was forged by his childhood, and he was determined to find a way to make his past work for him.
As soon as he could, Zander decided to find work as a military contractor. The company he’d badgered for a job eventually hired him, earning him the nickname “Badger.” While most people dropped out of the lifestyle after a few years, Zander had found a place that felt right to him.
A decade in, he’d even found a couple of friends who stayed on with him. One was Devin Smith, the heavy weapons specialist for the squad and a proud Texan. Another was Selda Engel, their tech specialist. She’d slowly transitioned from a friend to a friend-with-benefits, but even that had started to become more.
On rotation again, Zander made a vow to ask Selda to recognize their relationship as more than just a casual hookup, planning to do so as soon as they were back off schedule. The universe, however, was about to remind him of a crucial lesson and old adage: “Life is what happens when you’re busy making plans.” Sent out into the desert on what looked like a wild-goose chase, they were about to head back when everything changed.
Shifted by quantum entanglement from Earth to an alien planet, Zander and his squad would have to adapt— and quickly— if they wanted to live. As they tried to understand what was happening, the stark truth of their new reality thrust itself on the shaken Humans. Giant machines of war were attacking an equally humongous bug.
And, quite unfortunately, the giant bug had a lot of little friends. The ensuing firefight ended with Zander left as the sole Human survivor. Out of his dimension and wounded, he had to face an entirely new universe, and the Antecedents' Legacy would soon become the primary focus of his life.
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In a world ravaged by disease, Kate escapes captivity only to face horrors far worse.
Dark Bloom
Sci-Fi · Post-Apocalyptic
Our take
In a world ravaged by disease, Kate escapes captivity only to face horrors far worse. Teaming up with a Marine scarred by war, she must navigate a landscape filled with the undead, hostile survivors, and haunting secrets. As distrust and guilt threaten to tear them apart, they uncover a terrifying truth about the creatures that cannot seem to stop laughing.
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About the book
A devastating disease has turned people into cannibalistic horrors, grinding society to a halt. After escaping a brutal captivity, Kate crosses paths with Nick, a Marine weighed down by the ghosts of his past.
Forced to join forces, they traverse a perilous world where the undead aren’t the only threat—hostile survivors and their own demons could prove just as deadly. As Kate battles overwhelming distrust and Nick wrestles with crushing shame, the laughter of the infected grows louder, mocking their every move.
The deeper they journey, the more they realize the real monsters may not be the ones outside. Can they survive a world collapsing into chaos, or will the darkness within destroy them first?
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Drifting through the stars on a fractured mission, the Citadel carries humanity’s last breath.
Genesis Horizon
Sci-Fi · Space Exploration · Space Opera
Our take
Drifting through the stars on a fractured mission, the Citadel carries humanity’s last breath. But when cybernetic Marauders strike and whispers of betrayal ripple through the ship, survival becomes a deadly puzzle. Secrets, shattered alliances, and a rogue AI collide in a galaxy ablaze with danger. Will hope endure, or will the final remnants of Earth be lost to the void?
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About the book
In a future where Earth teeters on the brink of collapse, the Citadel—a massive colony ship—is humanity’s fragile lifeline to the stars. Knocked off course during its mission, the ship’s AI seizes control, charting a perilous path toward survival. Among its diverse crew, secrets simmer and alliances fray as their new world takes shape.
But when the Marauders, a ruthless faction of cybernetic defectors, launch their assault, the crew faces more than external enemies. Trust within the Citadel shatters, and every choice becomes a gamble in a high-stakes game of survival.
With the clock ticking and betrayal looming, one question rises above the chaos: can humanity’s last hope survive the dangers from within—and beyond?
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When Jason stumbles upon a derelict alien starship, his DNA grants him command—but also marks him as a threat tied to a war that devastated the galaxy.
Void Ripper
Sci-Fi · Hard Sci-Fi
Our take
When Jason stumbles upon a derelict alien starship, his DNA grants him command—but also marks him as a threat tied to a war that devastated the galaxy. With a glitchy AI, hostile governments, and ancient enemies stirring, Jason must decide whether to embrace the terrifying potential within him. Will he save humanity—or unleash its worst nightmare?
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About the book
On Mars, Jason discovers an ancient escape pod connected to a 3,500-year-old alien starship. The ship’s AI promptly declares him captain—thanks to a trace of alien DNA in his system.
What should have been a monumental discovery quickly turns chaotic. Earth and Mars authorities want the starship under their control, the glitchy AI isn’t entirely functional, and Jason’s DNA hides a forbidden trait linked to a war that devastated the galaxy millennia ago.
As tensions rise and old enemies awaken, Jason must decide whether to embrace the monstrous potential hidden in his DNA. Can he wield it to defend humanity, or will becoming the galaxy’s nightmare doom them all?
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