Books like 'Threshold'
Readers who enjoyed Threshold by David R. Palmer also liked the following books featuring the same tropes, story themes, relationship dynamics and character types.
sc-fi action / adventure aliens post-apocalyptic space-opera
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She is the Principle: A Kurtherian Gambit Series by Michael Anderle
Rated: 4.83 of 5 stars · 6 ratingsA teenage boy with a terminal condition, a group of school bullies, and an incognito Empress with a short temper…Kirian Larsen knows he won’t live to see adulthood. Dex and his gang only care that he’s a human living on “their” planet.Their determination to make his life harder bothers Kirian less than their efforts to do the same for their other victims... -
![Captain Caveman by Jerry Boyd]()
Captain Caveman by Jerry Boyd
Rated: 4.59 of 5 stars · 17 ratingsBob and the crew are off to deliver a shipload of lost property to its rightful owners. What dangers, seen and unseen, will they find at this lost colony? Will there be new crew members, waiting to be found? Find out in Bob and Nikki’s latest adventure... -
![Not Till We Are Lost by Dennis E. Taylor, Ray Porter]()
Not Till We Are Lost by Dennis E. Taylor, Ray Porter
Rated: 4.36 of 5 stars · 14 ratingsThe number one best-selling series that Audible listeners call “wonderfully entertaining”, “packed with humor, geek references and thought-provoking storylines”, and performed by “a true master story teller and actor” returns as the Bobs face their deadliest challenge yet... -
![The Legend of ZERO: Forgotten by Sara King]()
The Legend of ZERO: Forgotten by Sara King
Rated: 4.67 of 5 stars · 6 ratingsIt's been 819 years since Congress abandoned humanity to a Stone Age fate on an Earth infested with man-eating monsters, and now the galactic government, in all its benevolence, has come back to force humanity back into citizen status in its great collective......Except this time, thanks to Prime Commander Dobbs, humanity has a surprise for our alien conquerors...Categorized as:
aliens post-apocalyptic space-opera action-adventure book dystopia exploration fiction -
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![Shaved Ape Key by Jerry Boyd]()
Shaved Ape Key by Jerry Boyd
Rated: 4.61 of 5 stars · 15 ratingsWhat do you do when you can’t give away a space carrier? Learn to be the best captain you can. If one of your most loyal bots has unfinished business, you have to send him out to finish it up, don’t you? Come along as Bob faces his new responsibilities as captain of the B. S. Gene Cernan. And don’t forget to sing along...“There’s room for you, and there’s room for me... -
![Who Can Own the Stars? by Mackey Chandler]()
Who Can Own the Stars? by Mackey Chandler
Rated: 4.50 of 5 stars · 8 ratingsThe Kingdom of Central's sovereign, Heather Anderson, set L1 as a limit for armed ships to respect, de-militarizing the Solar System. Now that the Earth nations are experimenting with star drives they want to challenge this limit anew. The USNA starship, Constitution is intercepted violating the L1 limit and brings them to the brink of war again... -
![Starfoot by Jerry Boyd]()
Starfoot by Jerry Boyd
Rated: 4.53 of 5 stars · 17 ratingsAre Jim and Molly okay? John’s old friend Steve needs help. Can the crew take care of his problem? Can he help with some of their problems? Bob gets caught, loading a saucer. Will it mean big trouble, or a new crew member? Max finds marooned saucers on the Moon... -
![Behold Humanity!: May We Come In? by Ralts Bloodthorne]()
Behold Humanity!: May We Come In? by Ralts Bloodthorne
Rated: 4.60 of 5 stars · 5 ratingsThe Unified Civilized Council, which has ruled for over a hundred million years has discovered new species in the Long Dark. Strange and unknown species that seem to have no rhyme or reason about them. Compounding the problem is the reappearance of the ancient Precursor Autonomous War Machines... -
![Slave Trade by Craig Martelle, Michael Anderle]()
Slave Trade by Craig Martelle, Michael Anderle
Rated: 4.64 of 5 stars · 11 ratingsNo respect for life. Or the law. It’s the trade. In sentience. Run by the Corranites, creatures that have always traded in intelligent alien life.Bought and sold. Nothing more than property.Rivka is having none of it. With an eye toward taking the entire supply line down, she launches into the greater galaxy. All the way to the heart of the Federation.It’s bigger than anyone knows... -
![Technical Details by Sharon Lee, Steve Miller]()
Technical Details by Sharon Lee, Steve Miller
Rated: 4.50 of 5 stars · 6 ratingsTwo stories about the folks who keep the social and technical machinery running. "Landed Alien" finds Kara ven'Arith on a space station maintenance crew when a series of inexplicable events overtake support functions. In "Eleutherios," the friars at a down-and-out abbey are taken in hand by an unlikely savior. Both stories previously appeared on Baen.com website...Categorized as:
post-apocalyptic space-opera action-adventure adult book coming-of-age fiction futuristic -
![Impact! by Laurence E. Dahners]()
Impact! by Laurence E. Dahners
Rated: 4.33 of 5 stars · 21 ratings“Impact" is the twelfth book in a series of near future SciFi/Thrillers whose heroine Ell Donsaii has a nerve mutation that makes her a genius and provides her some astonishing athletic abilities.In “Impact,” Ell’s been taken off the “Most Wanted” list and is resuming somewhat of a normal life. Her old friend Phil Zabrisk is on his way to Mars... -
![Diamond Mask by Julian May]()
Diamond Mask by Julian May
Rated: 4.19 of 5 stars · 16 ratingsThe 21st century was drawing to a close, and metapsychic humankind was poised at last to achieve Unity to be admitted into the group mind of the already unified alien races of the Galactic Milieu. But a growing corps of rebels was plotting to keep the people of Earth forever separate in the name of human individuality...Categorized as:
aliens post-apocalyptic space-opera action-adventure adult anthologies cyberpunk female-author -
![Jack the Bodiless by Julian May]()
Jack the Bodiless by Julian May
Rated: 4.17 of 5 stars · 18 ratingsIn the year 2051, Earth stood on the brink of acceptance as full member of the Galactic Milieu, a confederation of worlds spread across the galaxy. Leading humanity was the powerful Remillard family, but somebody--or something--known only as "Fury" wanted them out of the way...Categorized as:
aliens post-apocalyptic space-opera action-adventure anthologies cyberpunk female-author fiction -
![Dark Cover by Jeffrey Burger]()
Dark Cover by Jeffrey Burger
Rated: 4.33 of 5 stars · 6 ratings"The universe is a pretty big place. If it's just us, it seems like an awful waste of space." ~Carl Sagan Secret, alien operatives have spent decades infiltrating humanity; government, military and key positions in the populous to prepare the world's population for control and mass slavery... -
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![Starfree Port by Randolph Lalonde]()
Starfree Port by Randolph Lalonde
Rated: 4.33 of 5 stars · 6 ratingsThe third book in the First Light Chronicles Series. The crew of the First Light enjoy the first safe harbor since they departed Freeground. While repairs are under way some of the crew get a chance to know each other better, including Captain Jonas Valent and Commander Ayan Rice... -
![The Modloch Empire by J.W. Murison]()
The Modloch Empire by J.W. Murison
Rated: 4.33 of 5 stars · 6 ratingsBook three in the Steven Gordon series takes us in to the heart of the Modloch Empire. Humanity quickly becomes ensnared by galactic politics. The people of Earth have to choose a single representative and the President of the United States is elected. He leaves his office and rushes to the aid of the fleet, now trapped within the Modloch Emperor’s web... -
![Magnificat by Julian May]()
Magnificat by Julian May
Rated: 4.22 of 5 stars · 26 ratingsThe eagerly awaited finale of a modern SF classic--May's Galactic Milieu Trilogy, which began with Jack the Bodiless and continued with Diamond Mask. The mystery involving Jack the Bodiless, the metaphysically talented Dorothea, and Fury, the insane metaphysic creature determined to become sole ruler over all humankind, explodes anew...Categorized as:
aliens post-apocalyptic space-opera action-adventure adult anthologies cyberpunk female-author -
![Artificial Evolution by Joseph R. Lallo]()
Artificial Evolution by Joseph R. Lallo
Rated: 4.25 of 5 stars · 8 ratingsArtificial Evolution is the third book in the Big Sigma series, building upon the story and characters introduced by Bypass Gemini and Unstable Prototypes. Lex, Michella and Squee are once again joined by the mercenaries Silo and Garotte. Along the way they'll need plenty of help from mad engineer Karter Dee and his AI Ma... -
![The Black Planet by J.W. Murison]()
The Black Planet by J.W. Murison
Rated: 4.20 of 5 stars · 10 ratingsThis is the second adventure in the Steven Gordon Series, Steven and his friend reach out into our solar system. Halfway between our sun and the Great Barrier they come across a previously undiscovered Black Planet. While exploring this strange new world they come across a strange alien structure, and what they find inside will change human history forever... -
![The City and The Ship by Anne McCaffrey, S.M. Stirling]()
The City and The Ship by Anne McCaffrey, S.M. Stirling
Rated: 4.14 of 5 stars · 14 ratingsTwo novels in one large volume, both set in the same universe as The Ship Who Sang: The City Who Fought: Simeon was bored with running the mining and processing station that made up his "body." Then the invaders came. If anyone was to survive, somehow he must transform his wargaming hobby into the real thing and become The City Who Fought... -
![Vorpal Blade by John Ringo, Travis S. Taylor]()
Vorpal Blade by John Ringo, Travis S. Taylor
Rated: 4.19 of 5 stars · 26 ratingsThe sequel to Into the Looking Glass. William Weaver, PhD. and SEAL Chief Adams are back and Bill got himself a ship! The former SSBN Nebraska has been converted, using mostly garage mechanics and baling wire, into a warp ship ready to go "out there...Categorized as:
aliens post-apocalyptic space-opera action-adventure adult apocalyptic audiobook book -
![Freddy Anderson's Home by John Ricks]()
Freddy Anderson's Home by John Ricks
Rated: 4.17 of 5 stars · 6 ratingsIt's a hard life when you're a super genius capable of many things, including using your mind in ways that others only dream of. Freddy Anderson used that ability working to save the world from a world ending disaster. However, the human race is now at war. Aliens have attacked and captured many of our top people including Freddy Anderson and are headed back to their home world... -
![The Star Wars Storybook by Geraldine Richelson, George Lucas]()
The Star Wars Storybook by Geraldine Richelson, George Lucas
Rated: 4.17 of 5 stars · 6 ratingsThe intergalactic adventures of Luke Skywalker and the Rebel Alliance as they battle the evil Imperial forces which have overthrown the Old Republic... -
![Scythian Dawn by P.K. Lentz]()
Scythian Dawn by P.K. Lentz
Rated: 4.17 of 5 stars · 6 ratingsGalactic overlords keep Earth mired in a permanent Dark Age. Empires are dust. Only nomadic cultures thrive. One barbarian war band will fight back. A new Dawn will rise.Born to Scythian royalty, Arixa rejected palace life at age nineteen to recruit her own war band, the Dawn, and ride the steppe in defense of the capital...Categorized as:
aliens post-apocalyptic space-opera action-adventure alternate-history book fiction first-contact -
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![Cyborg Strike by David VanDyke]()
Cyborg Strike by David VanDyke
Rated: 4.17 of 5 stars · 6 ratingsCyborgs, genetic engineering, and military action. Under the threat of impending alien invasion, when the Professor and the rogue Septagon Shadow cyborg program surface in Russia, the world has a problem... -
![Mandrake Company by Ruby Lionsdrake]()
Mandrake Company by Ruby Lionsdrake
Rated: 4.17 of 5 stars · 6 ratingsIn a star system run by an oppressive galactic conglomeration, the only way to stay free is to have your own ship. And even that’s not a guarantee. Join the mercenaries of Mandrake Company as they combat bounty hunters, elude government traps, and battle nefarious finance lords in their quest to make their own destinies... -
![The Fall of the Sky Lords by John Brosnan]()
The Fall of the Sky Lords by John Brosnan
Rated: 4.13 of 5 stars · 8 ratingsThis final volume of "The Sky Lords Trilogy" finds Jan Dorvin encased in an underwater cell, the prisoner of the sexually indeterminate Eloi. Far above, the struggle against the mighty airships continues, as Ashley, a rogue computer personality, once again joins forces with Milo Haze...Categorized as:
post-apocalyptic space-opera action-adventure adult book dystopia fiction male-author -
![Swallow the Sky: A Space Opera by Chris Mead]()
Swallow the Sky: A Space Opera by Chris Mead
Rated: 4.13 of 5 stars · 8 ratingsNEW EDITION - August 2015. Professionally edited and proofed..Swallow the Sky embodies the essence of classic science fiction: real science, adventure, high spirits, and above all, a sense of wonder.Galactic culture is still reverberating from the nanotech disaster that destroyed Earth... -
![Retribution by Dean M. Cole]()
Retribution by Dean M. Cole
Rated: 4.13 of 5 stars · 8 ratingsIt’s 2016. Air Force Fighter Pilots Jake Giard and Sandra Fitzpatrick saved the world … twice!But That Was Yesterday.Independence Day meets The X-Files when Air Force fighter pilots Jake Giard and Sandra Fitzpatrick join a decades-old global conspiracy to integrate humanity into a galactic government...Categorized as:
aliens post-apocalyptic space-opera action-adventure adult apocalyptic audiobook book -
![The Legend of ZERO: The Many Misadventures of Flea, Agent of Chaos by Sara King, Lance MacCarty]()
The Legend of ZERO: The Many Misadventures of Flea, Agent of Chaos by Sara King, Lance MacCarty
Rated: 4.10 of 5 stars · 10 ratingsYou asked for it, so here it is: an ILLUSTRATED Legend of ZERO story! BLURB: A rogue Trith is out to start a war, and only one bug can bring him down. In this Legend of ZERO novella, Joe Dobbs' eccentric, ceiling-lurking groundmate Flea teams up with Forgotten to stop a Trith from killing his friends. The task, however, is harder than it sounds--often because of Flea's own dubious choices...Categorized as:
aliens post-apocalyptic space-opera action-adventure adult book fiction first-contact -
![Shakedowners by Justin Woolley]()
Shakedowners by Justin Woolley
Rated: 4.38 of 5 stars · 8 ratingsSome starship captains explore strange new worlds, seeking out new life and new civilisations. Some lead missions of discovery through wormholes to the other side of the galaxy. Then there's Captain Iridius B. Franklin, someone who spent too long seeking out strange new bars and new alien cocktails... -
![Star Force: Earth Evacuation by Aer-ki Jyr]()
Star Force: Earth Evacuation by Aer-ki Jyr
Rated: 4.26 of 5 stars · 10 ratingsEarth's naivety has come to an end. The peace that they thought was their birthright is shattered when their true birthright returns in the form of an alien invasion bent on their total destruction...and from the Dinosaurs no less...Categorized as:
aliens post-apocalyptic space-opera action-adventure book dystopia fiction galactic-empire -
![Arrival by Ryk Brown]()
Arrival by Ryk Brown
Rated: 4.00 of 5 stars · 16 ratingsThe Eden Project was a dream. To start the first extra-solar colony… To avoid the mistakes of our past… To start anew.Three generations, born and raised on a starship hurtling through space. To never know an open sky… To never feel the wind on their face… To never witness the sun rise or set...Categorized as:
aliens post-apocalyptic space-opera action-adventure adult audiobook book exploration -
![Vacuum Diagrams by Stephen Baxter]()
Vacuum Diagrams by Stephen Baxter
Rated: 4.00 of 5 stars · 16 ratings"And everywhere the Humans went, they found life..."This dazzling future history, winner of the 2000 Philip K. Dick Award, is the most ambitious and exciting since Asimov's classic Foundation saga. It tells the story of Humankind - all the way to the end of the Universe itself... -
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![Sentenced to Prism by Alan Dean Foster]()
Sentenced to Prism by Alan Dean Foster
Rated: 4.00 of 5 stars · 14 ratingsThe company had a big problem, it was illegally exploiting a fabulously rich planet maned Prism, a world where even the tiniest creatures were living jewels. But somehow, all contact had been lost with the scientist of the survey team. The Company didn't want to draw attention to itself by sending in a rescue mission so they assigned Evan Orgell, a self-confident problem-solver, to investigate... -
![Doctor Who: Engines of War by George Mann, Aslı Dağlı]()
Doctor Who: Engines of War by George Mann, Aslı Dağlı
Rated: 4.00 of 5 stars · 14 ratings"The death of billions is as nothing to us Doctor, if it helps defeat the Daleks."The Great Time War has raged for centuries, ravaging the universe. Scores of human colony planets are now overrun by Dalek occupation forces. A weary, angry Doctor leads a flotilla of Battle TARDISes against the Dalek stronghold but in the midst of the carnage, the Doctor's TARDIS crashes to a planet below: Moldox... -
![The Dragon Never Sleeps by Glen Cook]()
The Dragon Never Sleeps by Glen Cook
Rated: 4.00 of 5 stars · 12 ratingsFor four thousand years, the Guardships have ruled Canon Space - immortal ships with an immortal crew, dealing swiftly and harshly with any mercantile houses or alien races that threaten the status quo. But now the House Tregesser has an edge: a force from outside Canon Space offers them the resources to throw off Guardship rule... -
![The Last Valkyrie by Dietmar Arthur Wehr, Shiromi Arserio]()
The Last Valkyrie by Dietmar Arthur Wehr, Shiromi Arserio
Rated: 4.00 of 5 stars · 10 ratingsWhen the Synthetic Intelligence Val Ky Ree wakes from her emergency shut-down after a climactic battle, she discovers thousands of years have passed, and her creator race, the Aesir, have all gone. The last of her kind, she finds a new purpose in protecting the remaining few thousand humans from the hostile alien races called The Compact...Categorized as:
aliens post-apocalyptic space-opera action-adventure adult book fiction first-contact -
![The Navigator by P.M. Johnson]()
The Navigator by P.M. Johnson
Rated: 4.25 of 5 stars · 8 ratingsEARTH HAS CHANGED. The old world order collapsed following the meteor impacts of 2031 when fire rained down from the skies, instantly vaporizing millions. Billions more died during the Long Winter and resource wars that followed. Over one hundred years have passed since those devastating events and new societies have formed around the globe...Categorized as:
post-apocalyptic space-opera action-adventure book dystopia fiction first-contact young-adult -
![First Contact by D.L. Harrison]()
First Contact by D.L. Harrison
Rated: 4.00 of 5 stars · 8 ratingsAlicia Jones is a genius, and a little odd. At just twenty three years of age, she is close to finishing her doctoral dissertation. But when she tests her latest theory in the lab to generate a strong EM field, it has very unanticipated results. Results that lead to faster than light travel, and first contact with another race... -
![The Reaper Plague by David VanDyke]()
The Reaper Plague by David VanDyke
Rated: 4.00 of 5 stars · 8 ratingsWith a homicidal alien spacecraft inbound at high speed, Skull and Raphaela fly to meet it in a desperate bid to buy time for the Earth. In the meantime Brigadier Spooky Nguyen presses to build the world's first space battleship while Colonel Muzik and Master Sergeant Repeth fight a life-and-death battle to return civilization to the nuked and plague-ridden nation's capital...Categorized as:
aliens post-apocalyptic space-opera action-adventure adult apocalyptic book dystopia -
![The Luck of Han'anga by Thomas Watson]()
The Luck of Han'anga by Thomas Watson
Rated: 4.33 of 5 stars · 6 ratingsThe Human Commonwealth of Worlds had colonized their small corner of the galaxy for almost four centuries before an intelligent non-human species was encountered. The Commonwealth was a civilization at peace with itself, but it was all Humanity knew... -
![Calling The Change by Michelle Diener]()
Calling The Change by Michelle Diener
Rated: 4.33 of 5 stars · 6 ratingsHe rescued her despite impossible odds—Garek has rescued Taya and the rest of his village from the sky raiders, but their return home doesn't bring easier times. The sky raiders aren't simply going to go away—they still need the shadow ore they came for, and they want the ships Garek stole from them back. But they aren't the only threat . . -
![Revolution's Shore by Kate Elliott, Alis A. Rasmussen]()
Revolution's Shore by Kate Elliott, Alis A. Rasmussen
Rated: 4.00 of 5 stars · 6 ratingsIn the second volume of the Highroad trilogy, plucky interstellar adventurer Lily Ransome sets out with a ragtag group to defeat a cruel empire bent on consuming the universeLilyaka Hae Ransome grew up on the colonized planet of Unruli... -
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![The Collected Short Fiction of C.J. Cherryh by C.J. Cherryh]()
The Collected Short Fiction of C.J. Cherryh by C.J. Cherryh
Rated: 4.00 of 5 stars · 6 ratingsDaw is thrilled to present the first and only complete and comprehensive volume of C.J. Cherryh's short fiction in trade paperback Featuring the short stories, novellas, and novelettes-including the award-winning story, Cassandra, and a new novella written specifically for this book-of the multiple award-winning author, this volume is a must-have for fans and newcomers alike...Categorized as:
post-apocalyptic space-opera action-adventure adult anthologies audiobook female-author fiction -
![Man-Kzin Wars X: The Wunder War by Hal G.P. Colebatch, Larry Niven]()
Man-Kzin Wars X: The Wunder War by Hal G.P. Colebatch, Larry Niven
Rated: 4.00 of 5 stars · 6 ratingsThe first colonists from Earth named the planet Wunderland. Generations later, the felinoid alien invaders called Kzin came and turned it into a hell for humans... -
![The Rebel Files: Collected Intelligence of the Alliance by Daniel Wallace]()
The Rebel Files: Collected Intelligence of the Alliance by Daniel Wallace
Rated: 4.00 of 5 stars · 6 ratingsThis top-secret cache reproduces highly sensitive intelligence that traces the Rebel Alliance from its formation through its tireless fight against the Empire and the First Order. From its earliest beginnings in covert opposition to Imperial operations, the Alliance could not leave its most sensitive information open to the risk of digital interception... -
![Web of Titan by Dom Testa]()
Web of Titan by Dom Testa
Rated: 4.00 of 5 stars · 6 ratingsThe first book in the Galahad series, Dom Testa's science fiction epicWhen the tail of the comet Bhaktul flicks through the Earth's atmosphere, deadly particles are left in its wake, and mankind is confronted with a virus that devastates the adult population. A renowned scientist proposes a bold plan: to build a ship that will carry a crew of 251 teenagers to a home in a distant solar system...Categorized as:
aliens post-apocalyptic space-opera action-adventure apocalyptic book dystopia fiction -
![The Best Science Fiction and Fantasy of the Year, Volume 2 by Jonathan Strahan, Ted Chiang]()
The Best Science Fiction and Fantasy of the Year, Volume 2 by Jonathan Strahan, Ted Chiang
Rated: 4.00 of 5 stars · 6 ratingsThe depth and breadth of what science fiction and fantasy fiction is changes with every passing year. The two dozen stories chosen for this book by award-winning anthologist Jonathan Strahan carefully maps this evolution, giving readers a captivating and always-entertaining look at the very best the genre has to offer...Categorized as:
aliens post-apocalyptic space-opera action-adventure adult anthologies exploration fiction -
![Guardian Awakening by C. Osborne Rapley]()
Guardian Awakening by C. Osborne Rapley
Rated: 4.00 of 5 stars · 6 ratingsFollowing an unsuccessful and debilitating experiment by the Navy, Tristan Taylor’s now reclusive and desolate life takes a shocking turn with the arrival of an alien warrior whose ship has crash-landed behind his isolated cottage...
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