A huge thank you to everyone who participated in our mid-year poll for the Best Sci-Fi Releases of 2024… So Far.

After two weeks of intense voting and spirited discussions, we’ve tallied the results and ranked them below from ten to one. With so many compelling reads in the poll, competition was fierce, leading to several ties, so you’ll find a few bonus titles on the list.

Ready for the big reveal? Scroll on to uncover the top picks of 2024… so far as decided by Discover Sci-Fi readers!

10. The Forever World by Ethan Rhodes

On a routine border patrol, pilot Zane Lucas encounters a mysterious cluster of drones. When he reports it to the Scorpius head office, they quickly sweep it under the intergalactic rug and place him on leave.

That same night, Zane is contacted by an estate lawyer from the distant planet Earth and learns he’s the sole beneficiary of a person he’s never met. Determined to get answers, he finds himself thrust into a dead man’s quest, along with a resourceful colleague, Julia Rossi.

Zane’s mission is tied to an old myth based on The Forever World book.

His father used to read it at bedtime, before he went missing during a bloody war with the Gral twenty years earlier. Their alliance is on the brink of collapse and the revolution is just beginning.

Can Zane find The Forever World, if it in fact exists?

Would this fabled planet help restore the balance?

Time is running out, and the drones are multiplying.

Grab The Forever World here on Amazon. Also available on audiobook.

9a. Traditions of Courage (Grimm's War Book 7) by Jeffery H. Haskell

Join the fight for freedom on Alliance's newest member.

When Cordoba fell and his officer was murdered, Jacob T. Grimm vowed the fight wasn't over. With the help of DesRon 12 and the stalwart spacers of the USS Interceptor, he's going to bring the Guild to their corporate knees.

On Cordoba, things aren't going well for the Marines. Local infantry are eager to attack, while refugees are forced out of the capital city on the verge of winter. The Spanish planet is in trouble. However, not all is as it seems.

The ground forces aren't Guild and they have more advanced tech than the Alliance Marines. Gunny Jennings and Bravo-Two-Five will need to muster every ounce of courage to fight overwhelming odds in a battle they never planned for.

As the fate of the planet unfolds, ex-spy Nadia Dagher and a ragtag group of former Interceptor crew must infiltrate the Guild and find the true location of their home planet.

Jacob faces off against a superior enemy, one as ruthless as he is compassionate. If he can't find a way to win, all the people on Cordoba will pay the price.

Get your copy of Traditions of Courage here on Amazon.

9b. To Challenge Heaven by David Weber and Chris Kennedy

The third entry into the New York Times bestselling series, To Challenge Heaven brings another thrilling adventure from the masters of military science fiction, David Weber and Chris Kennedy.

In a universe teeming with predators, humanity needs friends. And fast.

We've come a long way in the forty years since the Shongairi attacked Earth, killed half its people, and then were driven away by an alliance of humans with the other sentient bipeds who inhabit our planet.

We took the technology they left behind, and rapidly built ourselves into a starfaring civilization. Because we haven't got a moment to lose. Because it's clear that there are even more powerful, more hostile aliens out there, and Earth needs allies.

But it also transpires that the Shongairi expedition that nearly destroyed our home planet ... wasn't an official one. That, indeed, its commander may have been acting as an unwitting cats-paw for the Founders, the ancient alliance of very old, very evil aliens who run the Hegemony that dominates our galaxy, and who hold the Shongairi, as they hold most non-Founder species, in not-so-benign contempt.

Indeed, it may turn out to be possible to turn the Shongairi into our allies against the Hegemony. There's just the small matter of the Shongairi honor code, which makes bushido look like a child's game. We might be able to make them our friends -- if we can crush their planetary defenses in the greatest battle we, or they, have ever seen...

Get your copy of To Challenge Heaven here on Amazon. Also available on audiobook.

8a. Service Model by Adrian Tchaikovsky

8b. Rendezvous with Corsair by Jack Campbell

Jack Campbell’s New York Times bestselling The Lost Fleet sci-fi adventure series has transported legions of fans out of this world and into the heat of battle. Now, readers will discover how it all began—not only for John “Black Jack” Geary and his descendant Commander Michael Geary, but for those who fought and sacrificed so much alongside them.

Spanning from before the Alliance/Syndicate war to the devastating initial conflagration that would lead to decades of unremitting conflict and beyond into full-blown war, from the Geary’s own epic heroics to where their surviving compatriots found their own fates, this volume reveals the triumphs, tragedies, and life-altering events that made these warriors living legends in their universe.

Packed with high-stakes military action and drama as well as humor and humanity, this volume explores the foundations of The Lost Fleet series as well as past exploits of its most popular characters—and also includes the novelization of the Lost Fleet graphic novel Corsair, which was praised as “a Tom Clancy thriller in space” (Publishers Weekly).

Grab Rendezvous with Corsair here on Amazon.

Like what you're reading?

If you're enjoying our mid-year round up of the best of 2024 so far, why not join the DSF community for more awesome content? You'll get to be notified whenever a top 10 list or any other articles of interest go up on our site. It's free to sign up and you'll also get recommendations for new releases and discounted ebooks from our expert editorial team, from bestsellers to hidden gems.

8c. Sunken Spaceship by Anthony J. Melchiorri

An unlikely hero is swept up intointergalactic affairs when he stumbles upon a crashed starship.

Ex-Army paratrooper Griffin “Fin” Brooks thought he left danger behind when his battlefield injuries forced him to pursue a new career in marine biology. But one fateful night off the coast of South Africa a ship nearly crashes into him and his loyal golden retriever, Jacques.

Not just any ship. A starship.

Though its alien pilot is dead, the rare extraterrestrial animal inside is not. Fin learns the creature is being smuggled across the galaxy when a pair of interstellar visitors respond to the crash. But those same investigators accuse Fin and his dog of crimes he didn’t even know existed.

The only way to clear his name is to take the strange creature to its home planet and find out who’s responsible for killing the starship’s pilot. Which means Fin quickly needs to learn how to fly a spacecraft and navigate a galaxy teeming with intelligent life beyond his wildest dreams.

And he’s not the only one with designs for the crashed starship and its cargo. Fin will need every skill he’s honed as a paratrooper and a marine biologist if he—and his dog—are to survive.

Get your copy of Sunken Spaceship here on Amazon. Also available on audiobook.

7. Beyond the Ranges by John Ringo and James Aidee

For Jason Graham, the world ends not with a bang, not even with much of a whimper.

One second, he's sitting in a restaurant in Mobile, Alabama, chatting with a server, the next he finds himself in a strange room, rescued by mysterious alien benefactors. Seems the world did end, though how and why are something of a mystery.

Now, Jason—and five hundred million other humans—are in orbit around an Earthlike world that is abundant in natural resources and totally untamed. For the newly awakened humans, this is a chance to start society with a clean slate and a bright future. For Jason, who has knocked about aimlessly in several different careers in his Earth life, it’s an opportunity to unleash his creativity and ambition and see what he can really do.

Grab Beyond the Ranges here on Amazon.

6a. Blackheart: Terran Scout Fleet Book 6 by Joshua Dalzelle

Viper

It’s a name that is infamous within the galactic quadrant. A name that inspires awe.
… and fear.
For nearly a century the famed assassin has struck terror within the hearts of those she has been hired to terminate. In that time the Viper, a human cyborg named Carolyn Whitney, has been a lone wolf. She prefers being on her own, neither requiring nor desiring the company of others. She has very few people she can consider a friend, and now one of those is coming for her.

The Viper’s latest hit has put her in Earth’s crosshairs and Captain Jacob Brown has been tasked with bringing her in. Or, barring that, putting her down. Captain Brown, a genetic augment, has tangled with the Viper before… and lost. Will he prevail in the rematch?

Dive into Blackheart here on Amazon. Also available on audiobook.

6b. The Last Steward: Galaxy in Flames Book 1 by Nicholas Sansbury Smith

From the embers of a galaxy in flames, destiny calls upon an unknown guardian.

Captain Axel Finn has spent his life running salvage missions with an alien crew and their war bot. This motley group has found refuge on his ship from their own tumultuous pasts. But little do any of them know, beneath his gentle demeanor, their steadfast captain is far from the peace following, adventure seeking giant of a man they all love. His pacifist ethos meant to safeguard them has edged them to the brink of financial ruin and drawn dangerous enemies.

Forced into a risky salvage operation, the crew uncovers an alien relic not of this galaxy.

Expecting treasure to pay their debts, they instead find an artifact of the Wrath, an extraterrestrial species that once decimated entire worlds. To decipher the true nature of their discovery, Axel seeks Rangnar Soki, a deadly bounty hunter famous for his pursuit of the Stewards—legendary warriors who stood against the Wrath in bygone days. But as the mystery of this artifact deepens, and hunters close in, an old enemy threatens to set the galaxy ablaze.

Axel must choose: accept his legacy and unleash the monster within or watch everything he loves burn.

Kick off a thrilling quest of adventure with NYT and USA Today bestselling Author Nicholas Sansbury Smith in this new science fiction saga. Readers that enjoy galactic combat, snarky droids, ancient aliens, lost starships, and underdogs facing daunting odds, this story is for you!

Get your copy of The Last Steward 
here on Amazon. Also available on audiobook.

5. Toll of Honor (Honor Harrington Book 20) by David Weber

A NEW SOLO NOVEL IN DAVID WEBER'S NYT BEST-SELLING HONORVERSE

“It is our duty to pay for our liberty with our own blood. The freedom that we shall win through our sacrifice and exertions, we shall be able to preserve with our own strength.” —Subhas Chandra Bose

Lieutenant Brandy Bolgeo has come home from the Battle of Hancock station wounded in both body and spirit. She will need months to regenerate her lost leg, but how long will it take to heal her heart?

She’s come home to find that her wounds, her ship’s brutal damage, the deaths of so many friends, were the fault of an arrogant, aristocratic coward who broke and ran in the face of the enemy. Who left her ship to pay the price for his craven desertion under fire. And whose powerful political allies are determined to protect and preserve him at any price.

They have held hostage the declaration of war until Lord Pavel Young escaped the consequences of his cowardice. They didn’t care what it cost the Navy. They didn’t care what it cost the entire Star Kingdom of Manticore. Their tactics have cost the Royal Navy the priceless initiative as revolution and military purges wrack the People’s Republic of Haven, and that lost window of opportunity will cost the Star Kingdom seventeen years of bloody warfare and hundreds of thousands of deaths.

Now Young is free to seek vengeance on the people he feels have “wronged” him. People like Paul Tankersley and Honor Harrington. Paid duelists, smear tactics, hired assassins in public restaurants . . . nothing is beneath Pavel Young. But Captain Harrington can look after herself, and Pavel Young is about to face the fury of the woman the newsies call the “Salamander.” Yet who will save the Star Kingdom from the repercussions of his actions?

Women and men like Brandy Bolgeo are about to pay the toll for the Star Kingdom of Manticore’s honor.

Get your copy of Toll of Honor here on Amazon. 

4. Extinction by Douglas Preston

With Extinction, #1 New York Times bestselling author Douglas Preston has written a page-turning thriller in the Michael Crichton mode that explores the possible and unintended dangers of the very real efforts to resurrect the woolly mammoth and other long-extinct animals.

Erebus Resort, occupying a magnificent, hundred-thousand acre valley deep in the Colorado Rockies, offers guests the experience of viewing woolly mammoths, Irish Elk, and giant ground sloths in their native habitat, brought back from extinction through the magic of genetic manipulation. When a billionaire's son and his new wife are kidnapped and murdered in the Erebus back country by what is assumed to be a gang of eco-terrorists, Colorado Bureau of Investigation Agent Frances Cash partners with county sheriff James Colcord to track down the perpetrators.

As killings mount and the valley is evacuated, Cash and Colcord must confront an ancient, intelligent, and malevolent presence at Erebus, bent not on resurrection—but extinction.

Grab Extinction here on Amazon. Also available on audiobook.

3. Mushroom Blues (The Hofmann Report: Book One) by Adrian M. Gibson

“A fascinating merging of oppressive imperialism and disconcerting alienation.”—Adrian Tchaikovsky, award-winning author of Children of Time & Shadows of the Apt

ENTER THE FUNGALVERSE. BEAT THE WINTER BLUES. Blade Runner, True Detective and District 9 meld with the weird worlds of Jeff VanderMeer, Philip K. Dick and China Miéville in Adrian M. Gibson’s hallucinatory, fungalpunk noir debut.

Two years after a devastating defeat in the decade-long Spore War, the island nation of Hōppon and its capital city of Neo Kinoko are occupied by invading Coprinian forces. Its fungal citizens are in dire straits, wracked by food shortages, poverty and an influx of war refugees. Even worse, the corrupt occupiers exploit their power, hounding the native population.

As a winter storm looms over the metropolis, NKPD homicide detective Henrietta Hofmann begrudgingly partners up with mushroom-headed patrol officer Koji Nameko to investigate the mysterious murders of fungal and half-breed children. Their investigation drags them deep into the seedy underbelly of a war-torn city, one brimming with colonizers, criminal gangs, racial division and moral decay.

In order to solve the case and unravel the truth, Hofmann must challenge her past and embrace fungal ways. What she and Nameko uncover in the midst of this frigid wasteland will chill them to the core, but will they make it through the storm alive?

Dive into Mushroom Blues here on Amazon.

2. The Thief: A Cosmic Shores Novel by G.S. Jennsen

* A stand-alone adventure set in the Amaranthe universe *

The Hesgyr are thieves. “Scavengers,” to hear their victims tell it; “repurposers” by their own reckoning.

As Chief of Intelligence for Non-Anaden Affairs, Eren Savitas’ job is to protect the Advocacy from all manner of alien threats: sabotage, assassination, insurgency and, way down the list, theft. So when he spots a Hesgyr running off with valuable technology, he follows the alien home—and discovers a civilization unlike any he’s ever encountered.

Yes, the Hesgyr are thieves. But they are also being hunted. Systematically exterminated by an insidious enemy they can’t see, touch or find. Eren finds himself drawn ever deeper into the Hesgyr’s fascinating yet labyrinthine world as he races against time to solve the mystery of the deadly attacks. What he discovers is a complex web of loyalties and betrayals, of grudges and grievances millennia old—and beneath it all, a secret that may hold the key to the survival of more than one civilization.

The Thief is a humorous, pulse-pounding sci-fi adventure about alien culture clashes, the flaws and foibles that transcend species, and the satisfaction that comes from breaking all the rules to save the day.

Get your copy of The Thief here on Amazon.

1. NecroTek by Jonathan Mayberry

From New York Times bestselling author Jonathan Maberry, NecroTek is a gripping sci-fi thriller full of ghosts, gods, and a battle for the soul of humanity.

Neither cosmic philosopher Lars Soren, hotshot pilot Bianca Petrescu, nor the high priestess Jessica McHugh—Lady Death herself—can say quite where in the galaxy they are. But after an experiment gone horribly wrong, one thing is clear: Asphodel Station isn’t in orbit around Jupiter any longer. Worse, the monsters that live out here—ancient eldritch beings thought only to exist in stories and nightmares—have now been alerted to Earth’s existence.

Their army of Shoggoths is coming for us next.

Humanity’s only hope for survival lies on the surface of the alien world of Shadderal, where a ghost named Lost, the last of an ancient race, still haunts the vast plains of the Field of Dead Birds. But hope has a cost. Lost tells Soren about ancient derelict spacecraft awaiting on Shadderal, shapeshifting machines that blend ultra-advanced technology with the dark powers of necromancy. These ships might just be nimble enough to defend mankind against the coming invasion.

But there’s a catch: they can only be piloted by the dead.

As human starfighters fall in battle, their spirits can be called back from death to pilot these ghost ships of a fallen race. But will this new necromantic technology—NecroTek—allow humanity to stand against the vast armies of the Shoggoths? And even if it can, is the war to save the human race worth the cost of its pilots’ immortal souls?

Get your copy of NecroTek
here on Amazon. Also available on audiobook.

And there you have it, sci-fi aficionados!

These are the incredible books that have captivated our community so far this year. How many have you read? Which will you be adding to the top of your TBR? And are there any sci-fi books from the first half of 2024 that you think didn't get their due? Let us know here in the comments, or over in the Discover Sci-Fi Facebook group! 

Once again, a heartfelt thank you to everyone who participated in the voting. Your enthusiasm and passion for science fiction continue to inspire us. Stay tuned for more exciting polls, reviews, and discussions as we explore the ever-expanding universe of sci-fi literature together.

Until next time, happy reading and may your adventures be out of this world!

*All book-related copy in this post was pulled from Amazon, Goodreads & Wikipedia, unless otherwise credited.

Thank you to all who took part in our 2023 Readers’ Choice Awards for science fiction, the audiobook edition. This is the first year we’ve had additional categories, and we’re thrilled you showed up for it! Your nominations and votes are the beating heart of this annual competition! 

Alright! Drumroll, please…. 

It’s time to present the ten standout sci-fi books of 2023 in the audiobook category! Ready to see which audiobook titles earned the spotlight? Keep scrolling to discover the top picks from fellow sci-fi fans and audiophiles like you!

*You can also see the top Sci-Fi Books of 2023 list here, and the top LitRPG of 2023 list here.

10. Burn Box: Embers, Book One by Bobby Adair narrated by Phil Thron

Trust nothing. Challenge everything. Survive, if you can.

In the chilling dawn of a near-future world, gene hackers, armed with AI and CRISPR's deadly precision, unleash wave after wave of engineered diseases. With food dwindling and trust eroding, nations spiral into authoritarian chaos, battling an unseen enemy while rampant disinformation corrodes the very fabric of society.

Millions, once productive citizens, now languish in their homes, awaiting meager government assistance checks. They peer through windows, fear in their eyes, dreading the ever-present virus police who, with a blast from their notorious Burn Boxes, cleanse the world one contaminated victim at a time.

Amid this tempest of societal decay stands Noah Blanks, an ordinary man burdened with the responsibility of his mortgage and the health of his cherished grandpa. For him, hope is a distant memory of a saner world. But when the virus police arrive at his doorstep, forcibly hauling Grandpa out into the street and turning him to ash within the steel walls of a Burn Box, Noah's passive wait for a better world ignites into an urgent need for action.

Burn Box is more than a survival story. It's an exploration into the depths of humanity in a world teetering on the edge. Can Noah muster the courage to defy this twisted order, or will he be swallowed by the fiery abyss of the dystopian terror?

Listen to Burn Box here on Amazon. Also available on Kindle.

9. System Collapse by Martha Wells narrated by Kevin R. Free

Am I making it worse? I think I'm making it worse.

Everyone's favorite lethal SecUnit is back.

Following the events in Network Effect, the Barish-Estranza corporation has sent rescue ships to a newly colonized planet in peril, as well as additional SecUnits. But if there's an ethical corporation out there, Murderbot has yet to find it, and if Barish-Estranza can't have the planet, they're sure as hell not leaving without something. If that something just happens to be an entire colony of humans, well, a free workforce is a decent runner-up prize.

But there's something wrong with Murderbot; it isn't running within normal operational parameters. ART's crew and the humans from Preservation are doing everything they can to protect the colonists, but with Barish-Estranza's SecUnit-heavy persuasion teams, they're going to have to hope Murderbot figures out what's wrong with itself, and fast!

Yeah, this plan is... not going to work.

Start listening to System Collapse here on Amazon.. Also available on Kindle.

8. Children of Memory by Adrian Tchaikovsky narrated by Mel Hudson

The modern classic of space opera that began with Children of Time continues in this extraordinary novel of humanity's battle for survival on a terraformed planet.

Earth failed. In a desperate bid to escape, the spaceship Enkidu and its captain, Heorest Holt, carried its precious human cargo to a potential new paradise. Generations later, this fragile colony has managed to survive, eking out a hardy existence. Yet life is tough, and much technological knowledge has been lost.

Then strangers appear. They possess unparalleled knowledge and thrilling technology–and they've arrived from another world to help humanity’s colonies. But not all is as it seems, and the price of the strangers' help may be the colony itself.

Children of Memory by Arthur C. Clarke Award-winning author Adrian Tchaikovsky is a far-reaching space opera spanning generations, species and galaxies.

Get your audio copy of Children of Memory here on Amazon. Also available on Kindle.

7. The Downloaded by Robert J. Sawyer narrated by Brendan Fraser, Luke Kirby, Vanessa Sears 

Take a listen to The Downloaded here on Amazon. 

6. Starter Villain by John Scalzi narrated by Wil Wheaton

Inheriting your uncle's supervillain business is more complicated than you might think. Particularly when you discover who's running the place.

Charlie's life is going nowhere fast. A divorced substitute teacher living with his cat in a house his siblings want to sell, all he wants is to open a pub downtown, if only the bank will approve his loan.

Then his long-lost uncle Jake dies and leaves his supervillain business (complete with island volcano lair) to Charlie.

But becoming a supervillain isn't all giant laser death rays and lava pits. Jake had enemies, and now they're coming after Charlie. His uncle might have been a stand-up, old-fashioned kind of villain, but these are the real thing: rich, soulless predators backed by multinational corporations and venture capital.

It's up to Charlie to win the war his uncle started against a league of supervillains. But with unionized dolphins, hyperintelligent talking spy cats, and a terrifying henchperson at his side, going bad is starting to look pretty good.

In a dog-eat-dog world...be a cat.

Take a listen to Starter Villain  here on Amazon. Also available on Kindle.

Like what you're reading?

If you're enjoying our year end Readers' Choice Roundup, the audiobook edition, why not join the DSF community for more awesome content? You'll get to be notified whenever a top 10 list or any other articles of interest go up on our site. It's free to sign up and you'll also get recommendations for new releases and discounted ebooks from our expert editorial team, from bestsellers to hidden gems.

5. Hell Divers X: Fallout by Nicholas Sansbury Smith narrated by R.C. Bray

Much is lost, but hope in one man remains . . .

In a shocking betrayal, Captain Rolo has vaporized the supercarrier Immortal with a nuclear warhead, all but wiping out the Vanguard army. Little does he know that King Xavier and the surviving Hell Diver and Cazador teams from Brisbane were not aboard.

In Panama, Outpost Gateway has suffered a very different disaster: attack by carnivorous vines. Director Rodger Mintel sent out a desperate SOS as the voracious coils ripped into the bunker.

At the Vanguard Islands, Charmer has framed Michael Everhart for two murders. Michael’s wife, Layla, is frantic to prove his innocence as evidence against him mounts.

Back in Queensland, knights of the Coral Castle dragged captive Hell Diver Kade Long to their leader, known as the Forerunner, before locking him in a cell in the Coral Castle.

The truth of what happened at Brisbane is spreading, and so is radiation from the nuclear blast. The fallout threatens everything in its path, putting the Coral Castle and X’s remaining forces in dire peril.

Listen to Hell Divers X: Fallout here on Amazon. Also available on Kindle.

4. Aftermath: Expeditionary Force, Book 16 by Craig Alanson, narrated by R. C. Bray

What happens in the wake of Failure Mode?

The Aftermath of a stunning victory—especially an unexpected, complete, and final victory—should be high-fives all around, listening to politicians give boring congratulatory speeches, and a well-deserved rest for the Merry Band of Pirates. Yes, the galaxy is still a freakin' mess, but that is nothing new, and for a change, that can be someone else's problem.

Until, you know, something really bad happens, and only the Pirates can deal with the problem... Or not.

Dive into Aftermath here on Amazon. Also available on Kindle.

3. Earthside: Quantum Earth, Book Two by Dennis E. Taylor narrated by Ray Porter

The fate of mankind is in the hands of a group of 20-something science nerds in the sequel to Outland, by the Audible #1 best-selling author of the “Bobiverse” series.

The Yellowstone super-eruption has put an end to modern civilization. As cities and countries continue to fall, the colony of Rivendell in the alternate Earth known as Outland looks more and more like the only real hope for humanity. But life in Rivendell isn’t getting any simpler, either. Bill and Kevin continue to discover new worlds; the population continues to rise; winter is approaching; and everyone has their own opinion about how things should be run.

Then, a garbled plea for help from Omaha sends most of the security forces back Earthside to investigate, leaving Monica’s police force understaffed just as a large group of refugees arrive with its own ideas and power structure. With threats from both inside and outside, will the colony even survive until spring?

Dive into Earthside here on Amazon. Also available on Kindle.

2. Alpha Wave: The Sleepers War, Book One by Jonathan Mayberry and Weston Ochse narrated by Ray Porter

Created to defeat the invaders. Forgotten in victory. They will rise again …

We were outnumbered, outfought. Mankind was about to fall to the alien Flock. Our only chance was a desperate gamble, transforming Tier One SpecOps agents into deadly super soldiers.

In the end, we won the war, but we lost the peace. The Flock surrendered and spent the next two hundred years making reparations, indentured to humanity, doing everything humans did not want to do. And the evolved super soldiers were consigned to an endless sleep. Ready if ever needed, but in time they became myths. Abandoned and forgotten.

And then, when we were content in our dominance, the Flock revolted against all of humanity across the whole of the galaxy. We fell in a single day.

Which is when the dreams began. People across the settled worlds began dreaming of the Sleepers. The evolved saviors. Acts of rebellion and terrorism swept the galaxy, and in response the Flock ground us under heel.

Lexi Chow, descendant of a hero of the Flock War, believes the Sleepers are real, and are humanity’s only chance against the alien conquerors. With a crew of misfits, criminals, and believers, she sets out to wake the Sleepers. Hoping they will once more save us.

If the betrayed Sleepers are willing. If the Sleepers are even human.

If the Sleepers are on our side at all …

Alpha Wave by New York Times bestselling author Jonathan Maberry and master storyteller Weston Ochse launches a new, sprawling military science fiction adventure that will span the whole of a galaxy at war!

Dive into Alpha Wave
here on Amazon. Also available on Kindle.

1. Singularity by Jeremy Robinson narrated by R.C. Bray

Cherry Bomb, an A.I. made human—and immortal—is out for revenge against her creator, Will, who left her on the Galahad, a ship full of unholy monsters, traversing the universe from beginning to end, ad infinitum.

Countless years pass, giving her more than enough time to plot her revenge. Upon gaining control of the ship, she sets her plan in motion, building a vast army and reforming the universe as she sees fit.

On Earth, heroes are brought together. Miah, and his team of immortal gods, Titans, angels, and demons join with Dark Horse and the crew of the Bitch’n, along with Delgado, Wini, and a colorful cast of characters from around the world and the universe. They’re quickly thrown into a series of grueling missions, defending the Earth against all-out attack while attempting to uncover Cherry Bomb’s endgame.

Taking losses along the way, the horrible truth is finally uncovered. A planet sharing Earth’s orbit rounds the sun, on a collision course. It’s a desperate place populated by unspeakable creatures now flooding through portals to Earth. A planet…called Torment. And if Miah, Dark Horse, and the others can’t stop it, our reality is doomed.

Start listening to Singularity
here on Amazon. Also available on Kindle.

How many of the 2023 Readers' Choice top 10 audiobooks have you listened to? Which ones are you adding to the top of your TBR for 2024? Any stellar audiobooks you think didn't get their due? Let us know here in the comments, or over in the Discover Sci-Fi Facebook group! 

*All book-related copy in this post was pulled from Amazon, Goodreads & Wikipedia, unless otherwise credited.

Five years ago, we asked the Discover Sci-Fi community to vote for the Top 10 Space Opera Books and Series of all Time. Since then, thousands more readers have joined our community and simultaneously, countless new space opera titles have been released. With all these changes, we decided it was high time to re-evaluate and see how the favorites have shifted over the past five years.

And so, over the past two weeks, we conducted another poll, gathering thousands of votes from sci-fi aficionado both here on the blog and in our Discover Sci-Fi Facebook group. As a side note, this poll sparked some great discussion about what constitutes a space opera, and whether some of the reader nominated books actually met the criteria. If you're not in the group, we encourage you to get in there and throw your two cents in on this conversation, and those like it!

Now... on with the show...

Today, we’re thrilled to reveal the Top 10 Space Opera Books and Series as chosen by you, our discerning and passionate readers, ranked below from 10 to 1. Voting was tight on this one, seeing a tie for first place, and other spots on the list decided by a single vote.  Compared to our list from 2019, there have been a couple notable changes with two wildly popular entries being ousted in favor of something different. 

Scroll on to dive in and please don’t forget to share your thoughts in the comments below or in our Facebook group. We’re eager to hear whether you agree with the rankings and if not, what you'd change. 

10. Blood on the Stars by Jay Allan

Read the first book in Jay Allan’s blockbuster Blood on the Stars series.

A duel, in the deepest darks, a savage fight between two veteran warriors, two captains, two heroes.

An epic battle that only one can survive. A fight to determine if there is peace, or a bloody war where billions will die.

The Confederation battleship Dauntless has spent ten months patrolling the border, alone, watching for an attack from the enemy Union. The crew is exhausted, and the aging vessel needs repairs.

The fleet is mobilized, ready for the war it knows is coming. The forward bases are overloaded beyond capacity, and Dauntless is sent clear across the Confederation, to a base along the peaceful and sleepy sector known as the Far Rim.

But the quiet frontier isn’t quite what it seems, and a distress call from a mining colony at the edge of Confederation space, sends Captain Tyler Barron and his ship forward into the unknown.

Barron and his crew have their ship—and each other—but they can expect no reinforcements. His superiors believe that Union deceit is at play, that the attack is merely a diversion, intended to draw Confederation forces from the disputed border. Their orders are clear: no ships will be transferred from the main front. Stopping whatever is happening on the Far Rim is Barron’s responsibility, and his alone.

Barron is the grandson of the Confederation’s greatest hero, and his name has always carried great privilege, along with crushing responsibility. Now he must prove that he has inherited more than just a name from his famous ancestor.

He must face the enemy, and win the victory.

Before the Confederation is caught between two enemies and destroyed.

Read Duel in the Dark here on Amazon. Also available on audiobook.

9. Hyperion by Dan Simmons 

A stunning tour de force filled with transcendent awe and wonder, Hyperion is a masterwork of science fiction that resonates with excitement and invention, the first volume in a remarkable epic by the multiple-award-winning author of The Hollow Man.

On the world called Hyperion, beyond the reach of galactic law, waits a creature called the Shrike. There are those who worship it. There are those who fear it. And there are those who have vowed to destroy it. In the Valley of the Time Tombs, where huge, brooding structures move backward through time, the Shrike waits for them all.

On the eve of Armageddon, with the entire galaxy at war, seven pilgrims set forth on a final voyage to Hyperion seeking the answers to the unsolved riddles of their lives. Each carries a desperate hope—and

Grab Hyperion here on Amazon. Also available on audiobook.

8. Revelation Space by Alastair Reynolds 

This highly acclaimed first novel in the Revelation Space universe has redefined the space opera with a staggering journey across vast gulfs of time and space to confront the very nature of reality itself . . .

Nine hundred thousand years ago, something annihilated the Amarantin civilization just as it was on the verge of discovering space flight. Now one scientist, Dan Sylveste, will stop at nothing to solve the Amarantin riddle before ancient history repeats itself. With no other resources at his disposal, Sylveste forges a dangerous alliance with the cyborg crew of the starship Nostalgia for Infinity. But as he closes in on the secret, a killer closes in on him. Because the Amarantin were destroyed for a reason, and if that reason is uncovered, the universe and reality itself could be irrevocably altered . . .

Get your copy of Revelation Space here on Amazon. Also available on audiobook.

7. Vorkosigan Saga by Lois McMaster Bujold

Read Shards of Honor on Amazon. Also available on audiobook.

6. The Culture Series by Iain M. Banks

The first book in Iain M. Banks's seminal science fiction series, The Culture. Consider Phlebas introduces readers to the utopian conglomeration of human and alien races that explores the nature of war, morality, and the limitless bounds of mankind's imagination.

The war raged across the galaxy. Billions had died, billions more were doomed. Moons, planets, the very stars themselves, faced destruction, cold-blooded, brutal, and worse, random. The Idirans fought for their Faith; the Culture for its moral right to exist. Principles were at stake. There could be no surrender.

Within the cosmic conflict, an individual crusade. Deep within a fabled labyrinth on a barren world, a Planet of the Dead proscribed to mortals, lay a fugitive Mind. Both the Culture and the Idirans sought it. It was the fate of Horza, the Changer, and his motley crew of unpredictable mercenaries, human and machine, actually to find it, and with it their own destruction.

 Grab Culture here on Amazon. Also available on audiobook.

5. The Commonwealth Saga by Peter F. Hamilton

The year is 2380. The Intersolar Commonwealth, a sphere of stars, contains more than six hundred worlds interconnected by a web of transport “tunnels” known as wormholes. At the farthest edge of the Commonwealth, astronomer Dudley Bose observes the impossible: over one thousand light-years away, a star . . . disappears. Since the location is too distant to reach by wormhole, the Second Chance, a faster-than-light starship commanded by Wilson Kime, a five-times-rejuvenated ex-NASA pilot, is dispatched to learn what has occurred and whether it represents a threat.

Opposed to the mission are the Guardians of Selfhood, led by Bradley Johansson. Shortly after the journey begins, Kime wonders if the crew of the Second Chance has been infiltrated. But soon enough he will have other worries. Halfway across the galaxy, something truly incredible is waiting: a deadly discovery whose unleashing will threaten to destroy the Commonwealth . . . and humanity itself.

Get your copy of Pandora's Star here on Amazon. Also available on audiobook.

Like what you're reading?

If you're enjoying this list of the top 10 space opera books and series, why not join the DSF community for more awesome content? You'll get to be notified whenever a top 10 list or any other articles of interest go up on our site. It's free to sign up and you'll also get recommendations for new releases and discounted ebooks from our expert editorial team, from bestsellers to hidden gems.

4. Triplanetary by E.E. "Doc" Smith 

Triplanetary was first serialized in Amazing Stories in 1934 and it later on formed the first of the Lensman series, where it set the stage for what is one of the greatest space-opera sagas ever written. This original publication brings us to a distant planet inhabited by a highly developed aquatic race called the Nevians. They have managed to harness the atomic power of iron and have an enormous need for the metal to generate energy, but their planet has virtually no iron reserves. They build a spaceship to venture into the universe and find iron. Eventually they discover that Earth has huge amounts of iron and the Nevians start to extract all the iron out of Pittsburgh with a special ray. This ray shoots into the city and immediately vaporizes and removes any iron from the buildings, machines, earth, and even from human blood. It is up to Conway Costigan, a mercilessly competent, two-fisted whiz agent of the military Triplanetary Service, and his colleagues to save the planet.

Grab Triplanetary here on Amazon. Also available on audiobook.

3. Old Man's War by John Scalzi

Perfect for an entry-level sci-fi reader and the ideal addition to a veteran fan’s collection, John Scalzi's Old Man’s War will take audiences on a heart-stopping adventure into the far corners of the universe.

John Perry did two things on his 75th birthday. First he visited his wife's grave. Then he joined the army.

The good news is that humanity finally made it into interstellar space. The bad news is that planets fit to live on are scarce-and aliens willing to fight for them are common. The universe, it turns out, is a hostile place.

So: we fight. To defend Earth (a target for our new enemies, should we let them get close enough) and to stake our own claim to planetary real estate. Far from Earth, the war has gone on for decades: brutal, bloody, unyielding.

Earth itself is a backwater. The bulk of humanity's resources are in the hands of the Colonial Defense Force, which shields the home planet from too much knowledge of the situation. What's known to everybody is that when you reach retirement age, you can join the CDF. They don't want young people; they want people who carry the knowledge and skills of decades of living. You'll be taken off Earth and never allowed to return. You'll serve your time at the front. And if you survive, you'll be given a generous homestead stake of your own, on one of our hard-won colony planets.

John Perry is taking that deal. He has only the vaguest idea what to expect. Because the actual fight, light-years from home, is far, far harder than he can imagine-and what he will become is far stranger.

Dive into Old Man's War here on Amazon. Also available on audiobook.

2. The Expanse Series by James S.A. Corey

From a New York Times bestselling and Hugo award-winning author comes a modern masterwork of science fiction, introducing a captain, his crew, and a detective as they unravel a horrifying solar system wide conspiracy that begins with a single missing girl. Now a Prime Original series.

Humanity has colonized the solar system—Mars, the Moon, the Asteroid Belt and beyond—but the stars are still out of our reach.

Jim Holden is XO of an ice miner making runs from the rings of Saturn to the mining stations of the Belt. When he and his crew stumble upon a derelict ship, the Scopuli, they find themselves in possession of a secret they never wanted. A secret that someone is willing to kill for—and kill on a scale unfathomable to Jim and his crew. War is brewing in the system unless he can find out who left the ship and why.

Detective Miller is looking for a girl. One girl in a system of billions, but her parents have money and money talks. When the trail leads him to the Scopuli and rebel sympathizer Holden, he realizes that this girl may be the key to everything.

Holden and Miller must thread the needle between the Earth government, the Outer Planet revolutionaries, and secretive corporations—and the odds are against them. But out in the Belt, the rules are different, and one small ship can change the fate of the universe.

"Interplanetary adventure the way it ought to be written." —George R. R. Martin

Get your copy of Leviathan Wakes, here on Amazon. Also available on audiobook.

1A. The Foundation Series by Issac Asimov

For twelve thousand years the Galactic Empire has ruled supreme. Now it is dying. But only Hari Seldon, creator of the revolutionary science of psychohistory, can see into the future—to a dark age of ignorance, barbarism, and warfare that will last thirty thousand years. To preserve knowledge and save humankind, Seldon gathers the best minds in the Empire—both scientists and scholars—and brings them to a bleak planet at the edge of the galaxy to serve as a beacon of hope for future generations. He calls his sanctuary the Foundation.

The Foundation novels of Isaac Asimov are among the most influential in the history of science fiction, celebrated for their unique blend of breathtaking action, daring ideas, and extensive worldbuilding. In Foundation, Asimov has written a timely and timeless novel of the best—and worst—that lies in humanity, and the power of even a few courageous souls to shine a light in a universe of darkness.

Get your copy of Foundation
here on Amazon. Also available on audiobook.

1B. Honor Harrington Saga by David Weber

Having made him look a fool, she's been exiled to Basilisk Station in disgrace and set up for ruin by a superior who hates her.

Her demoralized crew blames her for their ship's humiliating posting to an out-of-the-way picket station.

The aborigines of the system's only habitable planet are smoking homicide-inducing hallucinogens.

Parliament isn't sure it wants to keep the place; the major local industry is smuggling; the merchant cartels want her head; the star-conquering, so-called "Republic" of Haven is Up To Something; and Honor Harrington has a single, over-age light cruiser with an armament that doesn't work to police the entire star system.

But the people out to get her have made one mistake. They've made her mad.

Get your copy of On Basilisk Station
here on Amazon. Also available on audiobook.

Time to sound off! Do you agree with the ranking here, or do you feel as though a well deserving space opera book or series was overlooked or didn't place as high as you think it should have? Feel free to let us know in the comments here, or join us in our Discover Sci-Fi Facebook Group to chime in on this matter and on everything else sci-fi related! 

*All book-related copy in this post was pulled from Amazon, Goodreads & Wikipedia, unless otherwise credited.

More than 80 percent of the ocean has never been mapped, explored, or even seen by humans. A far greater percentage of the surfaces of the moon and the planet Mars has been mapped and studied than of our own ocean floor. —National Geographic

Given how little we know about our own ocean, oceanic environments, both real and imagined alike, offer a sense of mystery that lends itself rather perfectly to science fiction. In our most recent poll in the Discover Sci-Fi Facebook group we asked for your favorite ocean-based sci-fi books; among them were some stellar examples well worth diving into. The following roundup includes many of the titles added to the poll, along with a couple picks of our own. We hope you'll read them all! 

20,000 Leagues Under the Sea by Jules Verne 

An American frigate, tracking down a ship-sinking monster, faces not a living creature but an incredible invention -- a fantastic submarine commanded by the mysterious Captain Nemo.  Suddenly a devastating explosion leaves just three survivors, who find themselves prisoners inside Nemo's death ship on an underwater odyssey around the world from the pearl-laden waters of Ceylon to the icy dangers of the South Pole . . .as Captain Nemo, one of the greatest villians ever created, takes his revenge on all society.

More than a marvelously thrilling drama, this classic novel, written in 1870, foretells with uncanny accuracy the inventions and advanced technology of the twentieth century and has become a literary stepping-stone for generations of science fiction writers.

Read 20,000 Leagues Under the Sea here on Amazon. 

The Abyss by Orson Scott Card

From the author of "Speaker's for the Dead", and "Seventh Son", this science fiction thriller is set in the Caribbean where a US submarine is mysteriously attacked. Foul play by the Soviets is suspected, and the world draws close to nuclear war. But the answer has nothing to do with human deeds.

Grab The Abyss here in paperback.. 

Startide Rising (The Uplift Saga Book 2) by David Brin

We are not alone. Humanity’s explorations have revealed galaxies inhabited by millions of intelligent species interacting under ancient traditions. Foremost among said traditions is uplift, which requires all spacefaring races to welcome newcomers into Galactic culture by breeding and genetically guiding each client species to full sapience—but at a price. Patron races demand centuries of indentured servitude from each uplifted client. But is upstart humanity a patron or a client?

The Earthship Streaker—crewed by humans and uplifted dolphins and chimpanzees—discovers a derelict armada, perhaps left by the very first patrons, the fabled Progenitors. Suddenly the Five Galaxies teeter on the brink of all-out war as fanatics hunt Streaker for the secret. With a damaged ship and hostile aliens in pursuit, the crew must band together if they hope to survive . . .

Get your copy of Startide Rising here on Amazon. Also available on audiobook.

Sphere by Michael Crichton

Read Sphere  here on Amazon. Also available on audiobook.

The Deep Range by Arthur C. Clarke

A man discovers the planet’s destiny in the ocean’s depths in this near-future novel by one of the twentieth century’s greatest science fiction authors.

In the very near future, humanity has fully harnessed the sea’s immense potential, employing advanced sonar technology to control and harvest untold resources for human consumption. It is a world where gigantic whale herds are tended by submariners and vast plankton farms stave off the threat of hunger.

Former space engineer Walter Franklin has been assigned to a submarine patrol. Initially indifferent to his new station, if not bored by his daily routines, Walter soon becomes fascinated by the sea’s mysteries. The more his explorations deepen, the more he comes to understand man’s true place in nature—and the unique role he will soon play in humanity’s future.

A lasting testament to Arthur C. Clarke’s prescient and powerful imagination, The Deep Range is a classic work of science fiction that remains deeply relevant to our times.

 Grab The Deep Range here on Amazon. Also available on audiobook.

Into the Drowning Deep by Mira Grant 

The ocean is home to many myths.

But some are deadly. . .

Seven years ago the Atargatis set off on a voyage to the Mariana Trench to film a mockumentary bringing to life ancient sea creatures of legend. It was lost at sea with all hands. Some have called it a hoax; others have called it a tragedy.

Now a new crew has been assembled. But this time they're not out to entertain. Some seek to validate their life's work. Some seek the greatest hunt of all. Some seek the truth. But for the ambitious young scientist Victoria Stewart this is a voyage to uncover the fate of the sister she lost.

Whatever the truth may be, it will only be found below the waves.

But the secrets of the deep come with a price.

Get your copy of Into the Drowning Deep here on Amazon. Also available on audiobook.

Like what you're reading?

If you're enjoying this list of ocean based sci-fi, why not join the DSF community for more awesome content? You'll get to be notified whenever a top 10 list or any other articles of interest go up on our site. It's free to sign up and you'll also get recommendations for new releases and discounted ebooks from our expert editorial team, from bestsellers to hidden gems.

The Swarm by Frank Schatzing

Whales begin sinking ships. Toxic eyeless crabs poison Long Island’s water supply. Around the world, countries are beginning to feel the effects of the ocean’s revenge. In this riveting novel, full of twists, turns, and cliffhangers, a team of scientists discovers a strange, intelligent life force called the Yrr that takes form in marine animals in order to wreak havoc on man for his abuses. The Day After Tomorrow meets The Abyss in his gripping, scientifically realist, utterly imaginative thriller. With the compellingly creepy and vivid skill of this author to evoke story, character, and place, Frank Schatzing’s book are certain to find a home with fans of Michael Crichton.

Grab The Swarm here on Amazon. Also available on audiobook.

Starfish by Peter Watts (Rifters Trilogy Book One)

A huge international corporation has developed a facility along the Juan de Fuca Ridge at the bottom of the Pacific Ocean to exploit geothermal power. They send a bio-engineered crew - people who have been altered to withstand the pressure and breathe the seawater - down to live and work in this weird, fertile undersea darkness.  

Unfortunately, the only people suitable for longterm employment in these experimental power stations are crazy, some of them in unpleasant ways. How many of them can survive, or will be allowed to survive, while worldwide disaster approaches from below?

Dive into Starfish here on Amazon. Also available on audiobook.

Cachalot (Humanx Commonwealth) by Alan Dean Foster

Welcome to Cachalot, a planet made almost entirely of water, an ocean refuge for Earth’s marine mammals, rescued from near extinction at the hands of humans thousands of years ago. Free from predators and human impact, the whales thrive in their new home, growing in size and intelligence. Everything is perfect. Until humans decide to establish floating towns on Cachalot, drawn by the planet’s abundant natural resources. Now someone or something is killing off Cachalot’s human population, a mystery a team of marine biologists has to been sent to Cachalot to solve—a mission that could cost them their lives.

Get your copy of Cachalot
here on Amazon.

Blueheart by Alison Sinclair

Poised on the brink of disaster, the hidden underwater inhabitants of the planet Blueheart strive to create a new species while plans are in motion to transform the planet into an Earth-like world, and as a battle rages, Rache returns and must make a difficult choice--his humanity or his world.

Get your copy of Blueheart
in paperback here on Amazon.

Are there other ocean based sci-fi titles you feel deserve a spot on this list? What are they? Any books here you previously missed that you're now planning to dive into? Fill us in in the comments here, or over in the Discover Sci-Fi Facebook Group! 

*All book-related copy in this post was pulled from Amazon, Goodreads & Wikipedia, unless otherwise credited.