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
221 past books matching Space Opera
A good pick for readers who like space mysteries, missing expeditions, wormhole travel, and ensemble science fiction.
Ethos
Sci-Fi · First Contact · Space Exploration · Space Opera
Our take
Three centuries after Earth’s first interstellar expedition vanished, its colony ship reappears near Saturn with no crew aboard, sending Captain Calvin Brooks and a new team back through the Link to search for the lost Ethos colony, with a 4.4-star rating from more than 1,700 Amazon reviewers. A good pick for readers who like space mysteries, missing expeditions, wormhole travel, and ensemble science fiction.
Choose your retailer
About the book
Ethos was mankind’s greatest hope. Until the Link closed.
On the 300th anniversary of Earth’s first expedition to another solar system, the original colony ship miraculously appears near Saturn. But the crew of Excursion One is nowhere to be found. All that’s left is a broken android, and a string of clues.
Captain Calvin Brooks, a hero from the Solar Wars, spends his days trying to forget the past on Link Station, until he’s thrust into danger when he’s asked to pilot the decayed ship back through the wormhole to search for the Ethos colony.
Jane Vanderbilt is the world’s most renowned historian on the revamped Excursion One mission, and her connection to the crew runs deep. Jane is added to the team by a mysterious astrophysicist, loyal to the Diplomats.
Luke Dalton is haunted by tragedy. He works the mines on Mars, while the loss of his family constantly weighs on him. The Deniers have other plans. Luke’s enlisted for duty by the Diplomat’s enemy. His mission: learn what really happened on Ethos.
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 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.
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.
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.
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.
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.
Choose your retailer
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.
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.
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.
Choose your retailer
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
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.
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.
Choose your retailer
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.
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.
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.
Choose your retailer
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.
Purchases through these links may earn Apropos Books a commission at no extra cost to you. Check the retailer for current price and availability.
Interstellar repo man Fergus Ferguson travels to the remote colony of Cernee to steal back a ship from a ruthless trade boss—but a sudden explosion plunges the settlement…
Finder
Sci-Fi · First Contact · Hard Sci-Fi · Space Opera
Our take
Interstellar repo man Fergus Ferguson travels to the remote colony of Cernee to steal back a ship from a ruthless trade boss—but a sudden explosion plunges the settlement into chaos. Forced to ally with rebels, dodge mercenaries, and contend with unsettling alien ships, Fergus discovers this “simple” job may demand more heroism than he ever planned. Suzanne Palmer launches a sharp, high-energy sci-fi caper.
Choose your retailer
About the book
HUGO AWARD-WINNING AUTHOR: The first “wicked, fast-paced, and fun” sci-fi caper about an interstellar repo man and professional finder (Elizabeth Bear, author of Ancestral Night).
“The zippier, zanier side of space opera.” —B&N Sci-Fi & Fantasy Blog
Fergus Ferguson has been called a lot of names: thief, con artist, repo man. He prefers the term finder. His latest job should be simple. Find the spacecraft Venetia's Sword and steal it back from Arum Gilger, ex-nobleman turned power-hungry trade boss. He’ll slip in, decode the ship’s compromised AI security, and get out of town, Sword in hand.
Fergus locates both Gilger and the ship in the farthest corner of human-inhabited space, a backwater deep space colony called Cernee. But Fergus’ arrival at the colony is anything but simple. A cable car explosion launches Cernee into civil war, and Fergus must ally with Gilger’s enemies to navigate a field of space mines and a small army of hostile mercenaries. What was supposed to be a routine job evolves into negotiating a power struggle between factions. Even worse, Fergus has become increasingly—and inconveniently—invested in the lives of the locals.
It doesn’t help that a dangerous alien species Fergus thought mythical prove unsettlingly real, and their ominous triangle ships keep following him around.
Foolhardy. Eccentric. Reckless. Whatever he’s called, Fergus will need all the help he can get to take back the Sword and maybe save Cernee from destruction in the process.
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.