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.*
Browse by genre
More genres
24 past books matching Alien Invasion

Spacebar
John Walker
Sci-Fi · Alien Invasion
Ideal for readers looking for space opera with an ex-soldier hero, frontier tensions, dangerous secrets, and galaxy-scale conflict.

Spacebar
John Walker
Sci-Fi · Alien Invasion · Galactic Empire
Our take
Spacebar: The Complete Series follows former Commonwealth soldier Carson Flint, who runs a saloon on the galaxy’s last neutral ground until a dying man arrives with a secret that draws ruthless warlords to his door. Ideal for readers looking for space opera with an ex-soldier hero, frontier tensions, dangerous secrets, and galaxy-scale conflict.
Choose your retailer
About the book
Carson Flint left the Commonwealth's wars behind for the quiet life of running a saloon on the edge of nowhere.
The Bulwark sits on Castus, the last neutral ground in a galaxy that tore itself apart. Smugglers, refugees, and war-weary soldiers drift through its doors, and Carson keeps his corner of it calm by staying out of everyone else's business.
Then a dying man stumbles in carrying a secret worth killing for.
The stranger came out of Commonwealth service, hunted across the stars, holding something the Thortan warlords will level a settlement to reclaim. When their guns reach Castus, neutrality means nothing, and the Bulwark stands between a ruthless militia and a discovery that could reshape a galaxy.
Carson only wanted a quiet life. But some doors, once opened, pull you toward the adventure of a lifetime.
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.

Starship’s Brain
Scott Bartlett
Sci-Fi · Alien Invasion
Henry Morgan expects a baseball game, not death by flying lawnmower.

Starship’s Brain
Scott Bartlett
Sci-Fi · Alien Invasion · First Contact · Space Exploration
Our take
Henry Morgan expects a baseball game, not death by flying lawnmower. When he wakes a century later, humanity has transformed him into the governing AI of its first interstellar starship. An alien threat is spreading through the asteroid belt, and Henry must investigate before it reaches Earth. This five-book space-opera collection combines military science fiction, cosmic danger, and one extremely unconventional second chance at life.
Choose your retailer
About the book
Henry Morgan went to a baseball game hoping to catch a pop fly - not an untimely death from a flying lawnmower to the head.
It's the lawnmower he gets. But he doesn't stay dead. Instead, he wakes up to find that a century has passed, and he's being drafted to be the governing AI for humanity's first interstellar starship.
In the year 2117, humanity is confronted by a metastasizing alien threat that's already established itself in the asteroid belt.
It's Henry the starship's job to sail out to it, investigate it, and end it.
Or to die trying.
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.

Shipwrecked
John Walker
Sci-Fi · Alien Invasion
This complete sci-fi box set fits readers who want military space opera, misfit crews, hostile worlds, and relentless action.

Shipwrecked
John Walker
Sci-Fi · Alien Invasion · Space Colonization
Our take
Civilian life should have been simpler than war, but Seth Levy finds a harsher battlefield in Shipwrecked: The Complete Series. Stranded on an alien prison planet, the retired Marine uncovers corrupt empires, rebellion, monsters, and buried truths that could reshape civilizations. This complete sci-fi box set fits readers who want military space opera, misfit crews, hostile worlds, and relentless action.
Choose your retailer
About the book
Seth Levy thought civilian life would be the easy part. He was wrong.
When a freak accident strands the retired Marine on a brutal alien prison planet, he discovers a galactic conspiracy, a corrupt empire, and an underground rebellion fighting for survival. Forced to navigate a universe of hostile empires, zealot warlords, and bioengineered monstrosities.
Seth is thrust into a conflict that could determine the fate of entire civilizations.
Alongside a misfit crew of rebels, former enemies, and AI allies, he must face mercenaries, monsters, and military forces as they fight to uncover buried truths and ignite a revolution.
The galaxy doesn't need another hero. But it's about to get one anyway.
If you like war-hardened protagonists, sprawling space operas, and relentless action, then you'll love Shipwrecked, the explosive sci-fi adventure series that proves no one cages a Marine for long.
This box set includes all seven books in the Far From Home series:
- Far From Home
- Corrupt Stars (Far From Home Book 2)
- Sounds of the Hunt (Far From Home Book 3)
- Night Demons (Far From Home Book 4)
- Internal Corrosion (Far From Home Book 5)
- Obliteration (Far From Home Book 6)
- Choice of a Lifetime (Far From Home Book 7)
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.

Final Contact
Jasper T. Scott & Nathan Hystad
Sci-Fi · Alien Invasion
Good for readers who want extinction-level sci-fi, alien mysteries, conspiracy threads, and high-stakes discovery.

Final Contact
Jasper T. Scott & Nathan Hystad
Sci-Fi · Alien Invasion · First Contact · Space Colonization
Our take
Two complete sci-fi series come together in Final Contact, where Earth faces extinction through converging natural disasters, mass disappearances, a changed Mars mission, and ancient artifacts pointing to alien contact. As separate trails reveal hidden forces and long-buried secrets, humanity may have to confront what has already been here, with a 4.5-star rating from more than 190 Amazon reviewers. Good for readers who want extinction-level sci-fi, alien mysteries, conspiracy threads, and high-stakes discovery.
Choose your retailer
About the book
Two complete series from the best-selling duo Jasper T. Scott and Nathan Hystad are together for the first time in a single volume! With over 15,000 ratings and 2,000 pages of gripping science fiction, you can’t miss this epic collection.
Included within:
Final Days (The Complete Series, Books 1-3)
The countdown to the end of the world has begun.
A mysterious convergence of natural disasters threatens to destroy life as we know it, and people across the United States are going missing. With no one left to investigate, Special Agent Kendra Baker takes the case, trying to solve the disappearances before she’s out of time.
Among those abducted is Valeria Miller, the daughter of ex-Marine Corporal Andrew Miller, and he’ll stop at nothing to find her.
With the help of an unstable conspiracy theorist, they find themselves on the trail of a reclusive billionaire with all the answers.
From Beyond (The Complete Series, Books 1-3)
It was only a matter of time before the truth was revealed....
Commander David Bryce is scheduled to lead a routine re-supply run to the fledgling colony on Mars. Without warning, he’s taken away by government agents and told the mission parameters have changed.
They’ve discovered something. And it’s drifting closer to Earth.
Atlas Donovan tracks an ancient artifact to Lake Como, Italy. After the recent news, Atlas is more drawn to the trail than ever. He continues his search, determined to uncover the significance of the strange markings, and more importantly, where the artifacts really came from.
As both Atlas and David draw near to their objectives, they realize a secret organization is working against them; a clandestine force with so much influence, they seem impossible to oppose.
Are we alone?
No, and they’ve been here before...
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.

Blackcollar
Timothy Zahn
Sci-Fi · Alien Invasion
For readers who like military science fiction with undercover missions, alien occupation, and resistance warfare.

Blackcollar
Timothy Zahn
Sci-Fi · Alien Invasion · Genetic Engineering · Space Opera
Our take
A resistance fighter infiltrates an alien-controlled government, seeking legendary guerrilla warriors to overthrow the invaders. In Blackcollar, Allen Caine’s mission depends on finding Plinry’s elusive blackcollars before the operation collapses, with a 4.2-star rating from more than 400 Amazon reviewers. For readers who like military science fiction with undercover missions, alien occupation, and resistance warfare.
Choose your retailer
About the book
A genetically enhanced fighting force may be humanity's only hope in this novel by the #1 New York Times–bestselling author of Star Wars: Thrawn.
Decades after a successful invasion of Earth and the Terran Democratic Empire by the Ryqril—hostile, leathery-skinned aliens—resistance fighter Allen Caine is training for an undercover mission. He will assume the identity of an aide to the senate—part of the government that colludes with the invaders. But when the mission begins earlier than planned, Caine finds himself stuck on the off-planet outpost of Plinry with no idea of what awaits. He's responsible for the most important mission undertaken by the resistance in twenty years, and when the operation goes awry, Caine's only hope is to locate Plinry's so-called blackcollars—the elusive, martial arts–trained guerilla force whose wartime resistance efforts are legendary. With his life and the freedom of everyone in the TDE on the line, Caine's success will depend on whether or not he can find them. . . .
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.

Reclaim the Skies
Nathan Hystad
Sci-Fi · Alien Invasion
Good for readers who like military sci-fi, alien invasion stakes, rescue missions, and humanity fighting for survival.

Reclaim the Skies
Nathan Hystad
Sci-Fi · Alien Invasion · First Contact · Space Exploration
Our take
With the Formless threat returning, Ryan Piece learns that Solus is imprisoned and Earth’s only starship has been seized by the government. In Reclaim the Skies, rescuing an ally and reclaiming the ship may be Earth’s best chance against a second attack. Good for readers who like military sci-fi, alien invasion stakes, rescue missions, and humanity fighting for survival.
Choose your retailer
About the book
Earth has survived. But the stars aren’t our own.
The Formless have been thwarted for now, but a message may have escaped a mining scout ship before it was destroyed. Solus, a Mediator with an allegiance to Ryan Piece, was exiled by the Kannin, and Earth is abandoned by their saviors.
With the threat of an incoming Formless fleet, Ryan begs his old boss to act. Instead, he discovers Solus is a prisoner, their only starship seized by the government.
Ryan’s training taught him to never leave a man behind, and he isn’t about to start now.
The Formless are coming, and only the Faction can help Earth survive their second attack. But will they be too late?
Reclaim the Skies is the second series in the epic saga, The Formless.
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.

All Flesh Is Grass
Clifford D. Simak
Dystopian · Alien Invasion
All Flesh Is Grass traps a quiet Midwestern town behind an invisible barrier, turning ordinary neighbors into prisoners overnight.

All Flesh Is Grass
Clifford D. Simak
Dystopian · Alien Invasion · First Contact
Our take
All Flesh Is Grass traps a quiet Midwestern town behind an invisible barrier, turning ordinary neighbors into prisoners overnight. Brad Carter only wants to understand why no one can leave, but his search makes him the uneasy link between Millville and an alien intelligence with plans for humanity. This classic science fiction novel blends first-contact mystery, communal paranoia, and small-town pressure under impossible conditions.
Choose your retailer
About the book
Long before Under the Dome, this novel of a town trapped within an invisible force field earned a Nebula Award nomination for the author of Way Station.
Nothing much ever happens in Millville, a small, secluded Middle-American community—until the day Brad Carter discovers he is unable to leave. And the nearly bankrupt real estate agent is not the only one being held prisoner; every resident is confined within the town's boundaries by an invisible force field that cannot be breached.
As local tensions rapidly reach the breaking point, a set of bizarre circumstances leads Brad to the source of their captivity, making him humanity's reluctant ambassador to an alien race of sentient flora, and privy to these jailers' ultimate intentions. But some of Millville's most powerful citizens do not take kindly to Carter's "collaboration with the enemy," even under the sudden threat of global apocalypse.Decades before Stephen King trapped an entire town in Under the Dome, science fiction Grand Master Clifford D. Simak explored the shocking effects of communal captivity on an unsuspecting population. Nominated for the Nebula Award, All Flesh Is Grass is a riveting masterwork that brilliantly reinvents the alien invasion story.
The third author to be honored as a Grand Master of Science Fiction by the Science Fiction and Fantasy Writers Association (SFWA), Clifford D. Simak also received three Hugo Awards, a Nebula Award, an International Fantasy Award, and a Bram Stoker Lifetime Achievement Award.
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.

Banish the Stars
Nathan Hystad
Sci-Fi · Alien Invasion
Good for readers who want alien invasion sci-fi with military grit and survival stakes.

Banish the Stars
Nathan Hystad
Sci-Fi · Alien Invasion · Galactic Empire
Our take
When alien starships appear and begin snatching people from Earth through space elevators, former soldier Ryan Pierce knows no rescue is coming. In Banish the Stars, he must build a team, identify the invaders, and face what they came for, with a 4.6-star rating from more than 20 Amazon reviewers. Good for readers who want alien invasion sci-fi with military grit and survival stakes.
Choose your retailer
About the book
We have arrived. Descent is in progress.
Ryan Pierce traded military life for a peaceful existence in Napa Valley. Everything was fine until the starships appeared.
As aliens overtake the land and obscure the sun, Ryan quickly grasps that no one’s coming to rescue them. He can’t save the world on his own. Ryan must build a team to confront humanity’s greatest threat.
Who are the invaders, and what did they come for? As people are snatched from the Earth one space elevator at a time, those answers become apparent.
But is Ryan ready to hear them?
From the best-selling author of Ethos, The Event, Lost Contact, First Life, and many more, comes a brand-new epic series, The Formless.
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.

Slow Gods
Claire North
Sci-Fi · Alien Invasion
Best for readers who like philosophical science fiction about identity, humanity, and the fate of interstellar societies.

Slow Gods
Claire North
Sci-Fi · Alien Invasion · Space Opera
Our take
Called “Deeply imaginative and achingly human” by Megan E. O’Keefe, this space opera follows Mawukana na-Vdnaze, a pilot who dies in deep space and returns as something not quite human, against the backdrop of a supernova that destroys planets and civilizations. Best for readers who like philosophical science fiction about identity, humanity, and the fate of interstellar societies.
Choose your retailer
About the book
Best of the Year at Gizmodo, Library Journal, and more!
"An astonishing, thought-provoking and above all touching story of found meaning and lost humanity.” —Adrian Tchaikovsky, Arthur C. Clarke Award-winning author of Children of Time
Slow Gods is the galaxy-spanning tale of one man's impossible life charted against the fate of humanity amongst the stars—a powerfully imaginative space opera from multi-award-winning author Claire North, perfect for fans of A Memory Called Empire and The Vanished Birds.
My name is Mawukana na-Vdnaze, and I am a very poor copy of myself.
In telling my story, there are certain things I should perhaps lie about. I should make myself a hero. Pretend I was not used by strangers and gods, did not leave people behind.
Here is one truth: out there in deep space, in the pilot's chair, I died. And then, I was reborn. I became something not quite human, something that could speak to the infinite dark. And I vowed to become the scourge of the world that wronged me.
This is the story of the supernova event that burned planets and felled civilizations. This is also the story of the many lives I've lived since I died for the first time.
Are you listening?
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.

Alien Covenant: Origins
Alan Dean Foster
Horror · Sci-Fi
As the Covenant prepares to begin a high-stakes colonization mission, a string of violent attacks exposes a conspiracy determined to destroy the ship before launch.

Alien Covenant: Origins
Alan Dean Foster
Horror · Sci-Fi · Alien Invasion
Our take
As the Covenant prepares to begin a high-stakes colonization mission, a string of violent attacks exposes a conspiracy determined to destroy the ship before launch. With two thousand colonists in danger, Captain Jacob Branson, Daniels, and security chief Daniel Lopé race to uncover the people behind the sabotage and stop the mission from collapsing before it ever leaves Earth’s orbit. This official prequel leans into corporate tension, conspiracy, and looming catastrophe within the Alien universe.
Choose your retailer
About the book
The Covenant mission is the most ambitious endeavor in the history of Weyland-Yutani. A ship bound for Origae-6, carrying two thousand colonists beyond the limits of known space, this is make-or-break investment for the corporation—and for the future of all mankind.
Yet there are those who would die to stop the mission. As the colony ship hovers in Earth orbit, several violent events reveal a deadly conspiracy to sabotage the launch. While Captain Jacob Branson and his wife Daniels complete their preparations, security chief Daniel Lopé recruits the final key member of his team. Together they seek to stop the perpetrators before the ship and its passengers can be destroyed.
An original novel by the acclaimed ALAN DEAN FOSTER, author of the groundbreaking Alien novelization, Origins is the official chronicle of the events that led up to Alien: Covenant. It also reveals the world the colonists left behind.
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.

Parasite
Darcy Coates
Horror · Sci-Fi
A discovery on a remote moon outpost unleashes a shape-shifting alien that can wear human bodies and mimic its victims with terrifying precision.

Parasite
Darcy Coates
Horror · Sci-Fi · Alien Invasion · First Contact
Our take
A discovery on a remote moon outpost unleashes a shape-shifting alien that can wear human bodies and mimic its victims with terrifying precision. As communication collapses and stations across space are left exposed, a small group of survivors must face a threat that is already spreading faster than anyone can contain it. This sci-fi horror delivers isolation, paranoia, and a fast-moving extinction-level nightmare.
Choose your retailer
About the book
When a guard discovers an unusual lifeform on her remote moon outpost, she disregards protocol to investigate―with catastrophic consequences. It soon becomes clear she's stuck in isolation with an alien capable of incredible depravity. The parasite wears its victims' skins and adopts their personalities. It mimics the way they talk, the way they look, the way they act. It's the perfect disguise.
And by the time humanity realizes it's facing extinction, it's already too late.
As the alien's ruthless progress collapses communication networks, wipes out defenses, and leaves hundreds of stations to fend for themselves, a handful of remarkable individuals must find a way to battle the greatest threat the universe has ever encountered... or die trying.
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.

Life Form
Alan Dean Foster
Sci-Fi · Alien Invasion
Earth’s leading scientists travel to Xica, an alien world with an advanced civilization, where their discoveries reveal wonders that could threaten humanity’s survival, with a 3.9-star average from…

Life Form
Alan Dean Foster
Sci-Fi · Alien Invasion · First Contact · Space Exploration
Our take
Earth’s leading scientists travel to Xica, an alien world with an advanced civilization, where their discoveries reveal wonders that could threaten humanity’s survival, with a 3.9-star average from more than 30 Goodreads ratings. Ideal for science fiction readers interested in alien civilizations, planetary exploration, and dangerous first contact.
Choose your retailer
About the book
Humanity makes first—and possibly last—contact with an alien species in this sci-fi adventure from the New York Times–bestselling author of the Humanx Commonwealth series.
Earth's most elite team of scientists has made an astonishing discovery. Far from our solar system is the life-sustaining planet Xica, home of an advanced intelligent species who have created a human-like civilization.
Invited to visit, the scientists explore a world of miraculous wonders that defies the very laws of nature as they know it. But Xica's secrets may threaten not only their lives but the lives of everyone on Earth . . .
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.