Books like 'Deep Space'
Readers who enjoyed Deep Space by Ian Douglas also liked the following books featuring the same tropes, story themes, relationship dynamics and character types.
sc-fi space hard sci-fi action / adventure military, war & conflict space-opera war military aliens ai
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A Grimm Sacrifice by Jeffery H. Haskell
Rated: 4.50 of 5 stars · 14 ratingsIn order to survive, Interceptor must change the rules.The Consortium is in real trouble. Caliphate Naval forces have stepped up their raids on the border planets and are taking people by the thousands. They can defend the wormhole, or they can defend their planets, not both... -
![The Human Factor by Joshua Dalzelle]()
The Human Factor by Joshua Dalzelle
Rated: 4.49 of 5 stars · 26 ratingsCaptain Jason Burke is a man apart, and not just because he's the only of his kind for thousands of lightyears in any direction. The changes to his body and to his genetic code have made him faster, stronger, more able to survive in his dangerous occupation ... but they've also ensured that he'll never truly fit in with others of his species...Categorized as:
aliens first-contact galactic-empire military space-opera war action-adventure adult -
![A Hop, Skip and a Jump by Mackey Chandler]()
A Hop, Skip and a Jump by Mackey Chandler
Rated: 4.50 of 5 stars · 10 ratingsLee has a lot going for her, tons of money, true friends who will stand by her, an unexpected bonus of extended life from advanced medial treatments, and a start at unraveling some of the pesky secrets in the stars. But there is so much to do to take advantage of all these opportunities that she's overwhelmed. Keeping all they've gained may not be easy... -
![Edge World by B.V. Larson]()
Edge World by B.V. Larson
Rated: 4.48 of 5 stars · 23 ratingsA lonely planet circles a star on the very border of Province 921. Critical resources produced there are claimed by both the Mogwa and the Skay. War between the Galactic giants becomes more likely every day.James McGill and Legion Varus are deployed to protect Edge World, a planet that rotates at a walking pace. Each day is as long as a year back on Earth... -
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![Odysseus Ascendant by Evan Currie]()
Odysseus Ascendant by Evan Currie
Rated: 4.41 of 5 stars · 27 ratingsA mysterious entity may be the key to a starship’s survival—or a terrifying new threat—as the Odyssey One series continues… The Empire has set its sights on its next target: human Terrans. As effective allies of the Priminae, the denizens of Earth have proven themselves enemies to the Empire, and now the Imperial forces know more about the Terran home world than ever before... -
![Redemption by Joshua Dalzelle]()
Redemption by Joshua Dalzelle
Rated: 4.41 of 5 stars · 27 ratingsThere is a fine line between right and wrong, good and evil. For years Jason Burke has straddled that line as best he can, always convinced that despite the violence carried out by him and his team they were firmly on the right side of that line. But as he reflects on his time with Omega Force, he begins to have his doubts...Categorized as:
aliens first-contact galactic-empire military space-opera war action-adventure adult -
![Destroyer by Joshua Dalzelle]()
Destroyer by Joshua Dalzelle
Rated: 4.43 of 5 stars · 24 ratingsA relentless enemy… An old wolf's last hunt… The future of two species hanging in the balance… The Darshik war machine is flagging, but the war is far from over. Even as an exhausted Federation military tenses up for a counterattack after repelling the last Darshik invasion, reports are coming in of a new, more powerful class of ship that's striking deep into Terran space... -
![Secret of the Phoenix by Joshua Dalzelle]()
Secret of the Phoenix by Joshua Dalzelle
Rated: 4.40 of 5 stars · 26 ratingsCaptain Jason Burke has begun to suspect that the random attacks on his ship and crew over the last couple of years may not be so random after all. Evidence is mounting that there is something on the Phoenix ... something that powerful factions will stop at nothing to get their hands on... -
![Iron & Blood by Joshua Dalzelle]()
Iron & Blood by Joshua Dalzelle
Rated: 4.42 of 5 stars · 24 ratingsThe Black Fleet Saga continues… A human planet has been invaded. The enigmatic Darshik have landed troops on a frontier world and have begun subduing major cities even as their blockade repels all attempts by the fledgling United Terran Federation to mount a counteroffensive... -
![In Fury Born by David Weber]()
In Fury Born by David Weber
Rated: 4.26 of 5 stars · 19 ratingsImperial Intelligence couldn't find them, the Imperial Fleet couldn't catch them, and local defenses couldn't stop them. It seemed the planet-wrecking pirates were invincible. But they made a big mistake when they raided ex-commando leader Alicia DeVries' quiet home work, tortured and murdered her family, and then left her for dead... -
![Breakaway by Craig Alanson, R.C. Bray]()
Breakaway by Craig Alanson, R.C. Bray
Rated: 4.50 of 5 stars · 18 ratingsThe Expeditionary Force saga continues with Breakaway, the eagerly awaited sequel to number-one Audible-ranked and New York Times best-selling Brushfire, from an epic sci-fi writer at the top of his game. Join the millions of listeners who have enjoyed R.C. Bray’s hilarious portrayal of Joe, Skippy, The Merry Band of Pirates and so many other unforgettable characters... -
![Omnia by S.H. Jucha]()
Omnia by S.H. Jucha
Rated: 4.33 of 5 stars · 12 ratingsAlex Racine, who led an elite group of humans and SADEs (self-ware digital entities), left the newly discovered planet of Celus-5 under difficult circumstances. Few of the Harakens with Alex thought there was little he could do to bring peace to the embroiled planet... -
![Allora by S.H. Jucha]()
Allora by S.H. Jucha
Rated: 4.33 of 5 stars · 12 ratingsUntil the Confederation created Allora, it had produced SADEs (self-aware digital entities) for hundreds of years with enormous consistency and harnessed their capabilities to power the society. But this particular, young SADE was disturbed by her confinement... -
![Celus-5 by S.H. Jucha]()
Celus-5 by S.H. Jucha
Rated: 4.33 of 5 stars · 12 ratingsFor the Sojourn’s initial mission, the Haraken explorer ship undertakes the investigation of Celus-5, a world identified by Willem, a SADE (self-aware digital entity), and his team of scientists, as the best prospect for a new colony.What should be a routine survey mission becomes a disaster. To the Harakens’ surprise, they discover, not one, but two alien species engaged in conflict... -
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![Green World by B.V. Larson]()
Green World by B.V. Larson
Rated: 4.42 of 5 stars · 20 ratingsRebels build a secret base on Green World. Their plan is to attack Earth and retake all the planets the Humans have conquered.Hegemony starships gather to strike the Rebels first, but where is their base? As the fleets search, Earth warships trespass into Skay space igniting a fresh border conflict between rival Galactics...Categorized as:
aliens first-contact galactic-empire invasion military space-opera war action-adventure -
![Haraken by S.H. Jucha]()
Haraken by S.H. Jucha
Rated: 4.29 of 5 stars · 14 ratingsNine years of tranquility came to an abrupt end when a Méridien starship entered the Hellébore system, sounding a dire warning for Alex Racine, the Haraken president. Unwanted visitors had arrived again. But this time, they’re not alien; they’re human... -
![The War Ship: Rise of the Jain, Book Two by Neal Asher]()
The War Ship: Rise of the Jain, Book Two by Neal Asher
Rated: 4.29 of 5 stars · 14 ratingsTheir nemesis lies in wait . . . Orlandine has destroyed the alien Jain super-soldier by deploying an actual black hole. And now that same weapon hoovers up clouds of lethal Jain technology, swarming within the deadly accretion disc’s event horizon. All seems just as she planned. Yet behind her back, forces incite rebellion on her home world, planning her assassination... -
![Defiance by Joel Shepherd]()
Defiance by Joel Shepherd
Rated: 4.37 of 5 stars · 23 ratingsThe UFS Phoenix is hunting for the long-lost drysine data-core. Within it lie the secrets to saving humanity from the resurgent deepynine machine-race. To recover it, Captain Erik Debogande must work together with the man who holds his sister hostage — the power-hungry parren leader Aristan. Aristan has sworn he will return Lisbeth Debogande once Phoenix grants him equal access to its prize... -
![By Other Means by Evan Currie]()
By Other Means by Evan Currie
Rated: 4.25 of 5 stars · 16 ratingsThe Hayden War has ended and now SOLCOM and the Alliance are face to face in talks, but neither side has the slightest idea what happened in the ultimate battle of the war... -
![Blood World by B.V. Larson]()
Blood World by B.V. Larson
Rated: 4.25 of 5 stars · 16 ratingsA dirty deal was struck. Humanity was allowed to keep three hundred rebellious worlds. In return, we declared war on a powerful enemy from beyond the frontier. A frantic build-up of forces has begun, but the task is hopeless. Seeking allies, Earth’s legions are sent to BLOOD WORLD. A planet on the fringe of known space, where the people only respect masters of combat...Categorized as:
aliens first-contact galactic-empire invasion military space-opera war action-adventure -
![Sol by S.H. Jucha]()
Sol by S.H. Jucha
Rated: 4.35 of 5 stars · 24 ratingsSol’s warships paid the ultimate price for threatening the Haraken and New Terran worlds. Now, Haraken President Alex Racine and his Méridien partner, Renée de Guirnon, are engaged in a desperate gamble to stop a war between their worlds and United Earth’s (UE) massive forces before it starts... -
![Homeworld by Evan Currie]()
Homeworld by Evan Currie
Rated: 4.29 of 5 stars · 30 ratingsWar comes home to the Sol system when the Drasin track a human ship back to Earth, with devastating consequences. Facing massive force of invading alien ships wielding terrible power, the crew of the NAC spacecraft, their allies, and the people of Earth must mount a desperate effort to stop them... -
![The Long-Range War by Christopher G. Nuttall]()
The Long-Range War by Christopher G. Nuttall
Rated: 4.38 of 5 stars · 8 ratingsThe gloves have finally come off ... The Tokomak, the unquestioned masters of the galaxy, have dispatched a massive fleet to crush the Solar Union - and the fledgling Galactic Alliance - before the human race and its alien allies can tear the galactic order asunder. Hundreds of thousands of starships under the command of an alien tactical genius, bent on exterminating the entire human race .. -
![TFS Fugitive by Tori L. Harris]()
TFS Fugitive by Tori L. Harris
Rated: 4.47 of 5 stars · 15 ratingsHaving successfully repelled the Resistance incursion into the Sol system, Terran Fleet Command must now deal with the far-flung worlds of the Sajeth Collective, which sponsored the attack. Task forces are dispatched to Damara and Lesheera to begin the first Human blockades of entire planets...Categorized as:
aliens first-contact galactic-empire invasion military space-opera war action-adventure -
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![Rogue World by B.V. Larson]()
Rogue World by B.V. Larson
Rated: 4.29 of 5 stars · 27 ratingsThe Galactics arrived with their Battle Fleet in 2052. Rather than being exterminated under a barrage of hell-burners, Earth joined a vast Empire that spanned the Milky Way. Today, Battle Fleet 921 is returning to Earth. It hasn’t been seen by human eyes since our blissful day of Annexation...Categorized as:
aliens first-contact galactic-empire invasion military space-opera war action-adventure -
![The Hot Gate by John Ringo]()
The Hot Gate by John Ringo
Rated: 4.27 of 5 stars · 29 ratingsNew York Times Best-Selling Author.The Big Showdown with an Alien Empire, to Keep the Earth Free—and Maybe Free the Galaxy as Well. The fight to free the Earth from alien domination began in Live Free or Die, and continued in Citadel. Now Tyler Vernon, and his troops aboard the gigantic battle station Troy, face a desperate battle with the forces of galactic tyranny... -
![Intruder by C.J. Cherryh]()
Intruder by C.J. Cherryh
Rated: 4.31 of 5 stars · 24 ratingsThe civil war among the alien atevi has ended. Tabini-aiji, powerful ruler of the Western Association, along with Cajeiri his son and heir, and his human paidhi, Bren Cameron, have returned to the Bujavid, their seat of power.But factions that remain loyal to the opposition are still present, and the danger these rebels pose is far from over... -
![Out of the Black by Evan Currie]()
Out of the Black by Evan Currie
Rated: 4.26 of 5 stars · 30 ratingsDeep in blackest space, the Drasin have watched humanity’s journey to the stars—and determined that a species as barbaric as ours has no place in the cosmos.The wreckage of the starship Odyssey, once Earth’s greatest guardian, lies strewn across New York City. Abandoned by all but its captain, Odyssey’s sacrifice covered the withdrawal of countless troops as the Drasin assault ravaged the planet... -
![Croma Venture by Joel Shepherd]()
Croma Venture by Joel Shepherd
Rated: 4.25 of 5 stars · 12 ratingsUpon the ancient drysine moon/city of Defiance, the UFS Phoenix is being rebuilt, but her crew cannot do so in peace. Parren factions jostle for control of not only Defiance, but of the drysine data-core that Phoenix won at such an awful price. But the parren do not lay sole claim to that ancient knowledge, and within the bowels of the machine-city, something long-dead is awakening... -
![Battleship Indomitable by David VanDyke, B.V. Larson]()
Battleship Indomitable by David VanDyke, B.V. Larson
Rated: 4.25 of 5 stars · 12 ratingsFrom Hugo Award finalist David VanDyke and million-selling science-fiction legend B.V. Larson comes book two in the epic military space opera adventure saga!Commodore Straker's rebellion grows in strength--but his enemies are growing even faster...Categorized as:
aliens first-contact galactic-empire invasion military space-opera action-adventure adult -
![Earth Fleet by B.V. Larson]()
Earth Fleet by B.V. Larson
Rated: 4.25 of 5 stars · 12 ratingsAt long last Earth has a handful of starships. Surrounded by Rebel Kher, Imperials and the mysterious Nomads, Humanity dares to assert our right to independence. The interstellar community reacts harshly. In the eyes of our neighbors, we’re upstarts, dangerous beings that don’t know our place. For the Kher, freedom can only be won through battle...Categorized as:
aliens first-contact galactic-empire invasion military space-opera war action-adventure -
![Deep Black (Infinite Sky #1) by Samuel Best]()
Deep Black (Infinite Sky #1) by Samuel Best
Rated: 4.25 of 5 stars · 12 ratingsTwo crews return to Titan. Who will survive?Titan. Sixth moon of Saturn. A deadly enigma harboring the greatest secret in the history of humankind.In the wake of the first mission, two companies with very different goals plot a return to that distant moon. Their ships are safer, their technology has improved…and they want answers... -
![TFS Theseus by Tori L. Harris]()
TFS Theseus by Tori L. Harris
Rated: 4.21 of 5 stars · 14 ratings“Welcome to the Pelaran Alliance …” With those simple words, the Guardian spacecraft openly revealed itself to Humanity, heralding a new chapter in its 500-year-long mission to cultivate our world...Categorized as:
aliens first-contact galactic-empire invasion military space-opera war action-adventure -
![Méridien by S.H. Jucha]()
Méridien by S.H. Jucha
Rated: 4.21 of 5 stars · 14 ratingsThe Méridiens are fleeing to their far colonies—and they have reason to run. Over the course of decades, they have lost hundreds of ships, billions of people, and seven Confederation colonies to an alien enemy: an advancing swarm of silver ships transported in the bowels of a gigantic, spherical vessel... -
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![The Human by Neal Asher]()
The Human by Neal Asher
Rated: 4.21 of 5 stars · 14 ratingsA warship is laying waste to the galaxy, making for unexpected allies in the face of incredible acts of war. This is the high-octane conclusion to Neal Asher's Rise of the Jain trilogy.An entire galaxy hangs in the balance.A Jain warship has risen from the depths of space, emerging with a deadly grudge and a wealth of ancient yet lethal technology... -
![Into the Stars by James Rosone]()
Into the Stars by James Rosone
Rated: 4.21 of 5 stars · 14 ratingsThe stars are within mankind’s reach……But what awaits in the void may end humanity…Mars and the Moon have been colonized, piracy runs rampant in the asteroid belts, and a thriving society grows in the depths of space. Humanity prepares to embark upon its greatest journey—the colonization of Alpha Centauri...Categorized as:
aliens first-contact galactic-empire invasion military space-opera action-adventure adult -
![Home World by B.V. Larson]()
Home World by B.V. Larson
Rated: 4.27 of 5 stars · 26 ratingsThe Galactics arrived with their Battle Fleet in 2052. Rather than being exterminated under a barrage of hell-burners, Earth joined a vast Empire that spanned the Milky Way. When the Earth is invaded by a rival empire, James McGill’s legion must defend the Home World. The top brass has complex plans, but none of that matters much to McGill, who chooses his own unique path...Categorized as:
aliens first-contact galactic-empire invasion military space-opera war action-adventure -
![Valkyrie Rising by Evan Currie]()
Valkyrie Rising by Evan Currie
Rated: 4.19 of 5 stars · 16 ratingsTwo years after the initial invasion of Hayden's World, the newly reinforced Hayden Militia is in a state of stalemate with the remaining enemy forces but neither side is content to leave things at that.The alien alliance has dispatched their varsity to clean up the resistance on Hayden while the USF has officially activated Task Force V, the latest and most advanced combat ships built by humans... -
![War Factory by Neal Asher]()
War Factory by Neal Asher
Rated: 4.19 of 5 stars · 16 ratingsThorvald Spear, resurrected from his death over a hundred years earlier, continues to hunt Penny Royal, the rogue AI and dangerous war criminal on the run from Polity forces. Beyond the Graveyard, a lawless and deadly area in deep space, Spear follows the trail of several enemy Prador, the crab-like alien species with a violent history of conflict with humanity... -
![Invaders by Laurence E. Dahners]()
Invaders by Laurence E. Dahners
Rated: 4.42 of 5 stars · 15 ratings“Invaders” is about events that occur several years after those in the novel “Disc.” GSI (Gettnor Space Industries) is beginning to investigate our solar system and mine the asteroids. Aircraft and automobile companies are beginning to switch over to thrusters from their more traditional products. New uses for thrusters are popping up in the healthcare and sports industries... -
![Deceiver by C.J. Cherryh]()
Deceiver by C.J. Cherryh
Rated: 4.29 of 5 stars · 23 ratings"One of the best long-running SF series in existence" (Publishers Weekly) continues with the second novel in a brand-new Foreigner sequence. The civil war among the alien Atevi has ended. Tabini-aiji, powerful ruler of the Western Association, along with Cajeiri, his son and heir, has returned to the Bujavid, his seat of power... -
![Qalea Drop by Joel Shepherd]()
Qalea Drop by Joel Shepherd
Rated: 4.47 of 5 stars · 13 ratingsThe UFS Phoenix embarks on a dangerous quest for the AI Ceephay Queen who rules at the heart of the Reeh Empire. For cover, Phoenix will use the enormous war being launched by the new rulers of the croma, Croma'Dokran, into reeh space... -
![March to the Stars by David Weber, John Ringo]()
March to the Stars by David Weber, John Ringo
Rated: 4.17 of 5 stars · 18 ratingsStranded on Marduk with his Royal Marine protectors, spoiled prince Roger MacClintock experiences a change in attitude during a long journey back to civilization across a sea filled with dangerous monsters and well-armed enemies... -
![Orion Fleet by B.V. Larson]()
Orion Fleet by B.V. Larson
Rated: 4.26 of 5 stars · 24 ratingsWhat enemy could be more terrifying than a soulless, alien machine? A year ago the Kher Empire was forced to retreat, but they were not beaten. In ORION FLEET they return with a new weapon. A huge ship driven by AI begins methodically grinding inhabited worlds to dust. This unstoppable enemy is without fear or remorse, and the Rebels begin a desperate battle just to slow its advance...Categorized as:
aliens first-contact galactic-empire invasion military space-opera war action-adventure -
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![Howling Dark by Christopher Ruocchio]()
Howling Dark by Christopher Ruocchio
Rated: 4.26 of 5 stars · 24 ratingsThe second novel of the galaxy-spanning Sun Eater series merges the best of space opera and epic fantasy, as Hadrian Marlowe continues down a path that can only end in fire.Hadrian Marlowe is lost. For half a century, he has searched the farther suns for the lost planet of Vorgossos, hoping to find a way to contact the elusive alien Cielcin...Categorized as:
aliens first-contact galactic-empire invasion military space-opera action-adventure adult -
![Soldiers of Fortune by Joshua Dalzelle]()
Soldiers of Fortune by Joshua Dalzelle
Rated: 4.23 of 5 stars · 27 ratingsAfter the daring rescue of a political dissident, Omega Force is contracted to investigate a rash of violent attacks on civilian shipping lanes within a group of star systems known as the Concordian Cluster... -
![Lines of Departure by Marko Kloos]()
Lines of Departure by Marko Kloos
Rated: 4.11 of 5 stars · 27 ratingsVicious interstellar conflict with an indestructible alien species. Bloody civil war over the last habitable zones of the cosmos. Political unrest, militaristic police forces, dire threats to the Solar System…Humanity is on the ropes, and after years of fighting a two-front war with losing odds, so is North American Defense Corps officer Andrew Grayson... -
![1st to Fight by Rick Partlow]()
1st to Fight by Rick Partlow
Rated: 4.42 of 5 stars · 13 ratingsI retired from the USMC, and now I write about space marines. I never thought I’d actually become one. As a sci-fi author with a hit TV show, I have a few ideas about what alien invaders are supposed to look like. In my stories, they’re technologically advanced monsters, with tentacles, and no faces. Turns out I was right about the technology. And about how angry they’d be...Categorized as:
aliens first-contact galactic-empire invasion military space-opera action-adventure adult -
![Demon Star by B.V. Larson, David VanDyke]()
Demon Star by B.V. Larson, David VanDyke
Rated: 4.25 of 5 stars · 23 ratingsThree stars, three worlds, three civilizations…one massive war. In a triple star system, not all planets are equal. When the DEMON STAR swings closest in her orbit, the Insectoids always invade. They raid the inner worlds with grim regularity, riding hordes of stealthed ships in ever growing waves. Their mission is to destroy all opposition—alien, human or otherwise... -
![Citadel by John Ringo]()
Citadel by John Ringo
Rated: 4.20 of 5 stars · 30 ratingsOf all the hosts of Eurotas the Troias were the most fell. For they were born of Winter.Between the Solar Array Pumped Laser and Troy, the two trillion ton nickel-iron battlestation created by eccentric billionaire Tyler Vernon, Earth has managed to recapture the Sol system from their Horvath conquerors and begin entering the galactic millieu...
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