Books like 'Entropy'
Readers who enjoyed Entropy by Gerald M. Kilby also liked the following books featuring the same tropes, story themes, relationship dynamics and character types.
sc-fi hard sci-fi action / adventure space space-opera ai space-travel exploration colonization
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A Rock and a Hard Place by Ryk Brown, Jeffrey Kafer
Rated: 4.58 of 5 stars · 12 ratingsTwo worlds preparing their defenses . . . A ship struggling to get back in the fight . . . An enemy continuing its relentless attack . . . A former enemy that could hold the answer . . . With the fate of billions in his hands, Captain Scott is offered a way to save them all and end the bloodshed, but if it backfires, he could lose everything. Sometimes, there is no good choice... -
![Into the Serpent's Lair by Ryk Brown]()
Into the Serpent's Lair by Ryk Brown
Rated: 4.76 of 5 stars · 17 ratingsEmpires at the brink of war…A galactic alliance on the horizon…Worlds on the verge of destruction…Comrades taking up arms against one another…Nathan Scott must use all his cunning to save not only his own world, but the worlds of his friends and his enemies. But to do so, he must make a deal with the devil, and risk everything on a fight no one believes he can win... -
![A Grimm Sacrifice by Jeffery H. Haskell]()
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... -
![Who Takes No Risk by Ryk Brown]()
Who Takes No Risk by Ryk Brown
Rated: 4.56 of 5 stars · 21 ratingsPart 2: Episode 7 Old allies go dark… New worlds join the fight… A rescue from an enemy held world… A lone operative with a dangerous plan… The Karuzari finally have the support of an industrialized system, but they need time to build their forces. Unfortunately, time is the one thing they may not have... -
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![Judas Unchained by Peter F. Hamilton]()
Judas Unchained by Peter F. Hamilton
Rated: 4.33 of 5 stars · 43 ratingsRobust, peaceful, and confident, the Commonwealth dispatched a ship to investigate the mystery of a disappearing star, only to inadvertently unleash a predatory alien species that turned on its liberators, striking hard, fast, and utterly without mercy. The Prime are the Commonwealth's worst nightmare... -
![I Am Justice by Ryk Brown]()
I Am Justice by Ryk Brown
Rated: 4.53 of 5 stars · 21 ratingsPart 2: Episode 9 A chance to gain resources… A need to prepare a defense… A trap about to be sprung… An opportunity for justice… As his sister faces a critical moment, Captain Scott must chase his friends to regions he has yet to travel. Sometimes, you just have to take risks for those you care about. Sometimes, quite often... -
![The Saints of Salvation by Peter F. Hamilton]()
The Saints of Salvation by Peter F. Hamilton
Rated: 4.40 of 5 stars · 31 ratingsHumanity is struggling to hold out against a hostile takeover by an alien race that claims to be on a religious mission to bring all sentient life to its God at the End of Time. But while things may look grim in the immediate aftermath of the attack, mankind is busy playing an even longer game than the aliens may have expected...Categorized as:
colonization exploration space-opera space-travel action-adventure adult aliens audiobook -
![Starman's Saga: The Long, Strange Journey of Leif The Lucky by Colin Alexander]()
Starman's Saga: The Long, Strange Journey of Leif The Lucky by Colin Alexander
Rated: 4.50 of 5 stars · 10 ratingsIn the year 2069, humanity’s last chance for peace is the first ever interstellar mission. A multi-national crew of the most talented scientists and pilots has been chosen based on their expertise and skill. The final spot aboard the craft is assigned as a prize in a global “BerthRight” lottery, and Leif Grettison is the “everyman volunteer” who won. However, Leif isn’t really an “everyman... -
![Messinants by S.H. Jucha]()
Messinants by S.H. Jucha
Rated: 4.50 of 5 stars · 10 ratingsPyre is a volatile planet. Its surface belches heat and noxious gases, forcing downsiders to inhabit domes. But Pyre’s instability isn’t limited to its geology. The colonists, who were marooned in the system hundreds of years ago, have endured a tumultuous history.Exploring Triton, Pyre’s third moon, spacers inadvertently activate an alien dome...Categorized as:
colonization exploration space-opera space-travel action-adventure adult aliens audiobook -
![Secrets in the Stars by Mackey Chandler]()
Secrets in the Stars by Mackey Chandler
Rated: 4.50 of 5 stars · 10 ratingsWhen Lee Anderson and her parents discovered a new world teeming with life, it was the dream of every explorer: they were rich beyond their imaginations. But tragedy struck when a herd of creatures overran their camp and killed her parents. The only other adult in her life had been their partner Gordon, who adopted her as parent. Which didn’t turn out to be easy, because he wasn’t human...Categorized as:
exploration space-opera space-travel action-adventure adult aliens book coming-of-age -
![That Which Other Men Cannot Do by Ryk Brown]()
That Which Other Men Cannot Do by Ryk Brown
Rated: 4.44 of 5 stars · 26 ratingsEpisode 15 New forces grow… Old friends are lost… New alliances are forged… Old weapons are made new… With political unrest growing, the Alliance must rush to rebuild their fleet and expand their 'sphere of influence' before their support runs out. But when the Jung up the ante, the Alliance must turn up the heat... -
![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... -
![Sanctuary by Ryk Brown]()
Sanctuary by Ryk Brown
Rated: 4.52 of 5 stars · 20 ratingsPart 2: Episode 8 A family nearly destroyed… A loved one in need of help… A fleet in need of a home port… An Alliance struggling to be reborn… Captain Scott has lost his entire family, save his sister, who needs better medical care than the Aurora can provide... -
![Rescue The Princess by John Hindmarsh]()
Rescue The Princess by John Hindmarsh
Rated: 4.42 of 5 stars · 12 ratingsJack suffered from an attack by the Blue Caps. He sued the RSN and won. He also sued the Royal Family and won. Now he’s acquired his own warship and his first mission is to rescue the princess.What? Yes, Sofia is missing. The Queen has taken an intense dislike to her daughter’s ambitions and Sofia has disappeared. Jack sets out to rescue her with the assistance of Black Company marines... -
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![Return of the Corinari by Ryk Brown]()
Return of the Corinari by Ryk Brown
Rated: 4.61 of 5 stars · 16 ratingsPart 2: Episode 13 A host of new allies… A plethora of advanced technologies… A daring gamble to advance their forces… A chance to retake lost worlds once and for all… The Dusahn have been backed into a corner, barely able to hold the worlds of the Pentaurus cluster, let alone the entire sector. Forced to dig in, they may have to resort to drastic measures to save their fledgling empire... -
![Liberation by Ryk Brown]()
Liberation by Ryk Brown
Rated: 4.37 of 5 stars · 26 ratingsEpisode 10 Heartfelt reunions with friends… Desperate plans to gain advantage… Opportunities that cannot be ignored… Discovery of family once thought lost… The time has come for Captain Scott to fight for that which was taken… the very freedom of the world he was sworn to protect. “Liberation” is a 108,000 word novel, and is the 10th episode in The Frontiers Saga... -
![Empaths by S.H. Jucha]()
Empaths by S.H. Jucha
Rated: 4.40 of 5 stars · 10 ratingsCaptain Jessie Cinders faces a hazardous choice. The murderer of the governor’s nephew stands before him. But, the frightened teenager, Aurelia Garmenti, doesn’t resemble the commandant’s description of the vicious, hardened killer his security forces seek.To complicate matters, Jessie’s mind has felt Aurelia’s mental powers... -
![The Long Voyage of the Little Fleet by Mackey Chandler]()
The Long Voyage of the Little Fleet by Mackey Chandler
Rated: 4.40 of 5 stars · 10 ratingsIn the first book of this series "Family Law", Lee's parents and their business partner Gordon found a class A habitable planet. They thought their quest as explorers was over and they'd live a life of ease. But before they could return and register their claim Lee's parents died doing a survey of the surface... -
![The Weak and the Innocent by Ryk Brown]()
The Weak and the Innocent by Ryk Brown
Rated: 4.35 of 5 stars · 27 ratingsEpisode 14 A ship in the hands of their enemy… A liberation gone wrong… A chance to double their ranks… A bold and daring plan… Their support from the Pentaurus cluster dwindling fast, the Alliance faces new and unpleasant realities in the Sol sector. But untoward changes also bring unexpected opportunities… The 'trick' is in how you use them... -
![Colony Mars Boxset by Gerald M. Kilby]()
Colony Mars Boxset by Gerald M. Kilby
Rated: 4.33 of 5 stars · 12 ratingsAll contact is lost with the first privately funded colony on Mars during a long and destructive sandstorm. Satellite imagery of the aftermath shows extensive damage to the facility and the fifty-four colonists who called it home are presumed dead. Three years later, a new mission sets down on the planet surface to investigate what remains of the derelict site...Categorized as:
colonization exploration space-travel action-adventure adult book fiction futuristic -
![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... -
![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... -
![Born of the Ashes by Ryk Brown]()
Born of the Ashes by Ryk Brown
Rated: 4.34 of 5 stars · 27 ratingsEpisode 11 A world in chaos… An eager new ally… A newly acquired ship… An even greater threat on its way… Captain Nathan Scott must decide whether to stand and fight to the end, or live to fight another day… even if it means the end of his world. “Born of the Ashes” is a 122,000 word novel, and is the 11th episode in The Frontiers Saga... -
![Resistance by Ryk Brown]()
Resistance by Ryk Brown
Rated: 4.34 of 5 stars · 27 ratingsEpisode nine of The Frontiers Saga...A chance to gain much needed resources… A group of highly trained, merciless soldiers… A half-completed ship on a trajectory to nowhere… A lone operative on familiar yet dangerous ground… Captain Scott and the crew of the Aurora have a chance to get everything they need to liberate their home world, but they may have to fight someone else's war first... -
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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:
colonization exploration space-opera space-travel action-adventure adult aliens audiobook -
![Escalation by Ryk Brown]()
Escalation by Ryk Brown
Rated: 4.29 of 5 stars · 14 ratingsA cease-fire that has lasted seven years… Worlds half-destroyed that have been rebuilt anew… Friends and crewmates scattered light-years apart… New leaders that would be kings… The Jung threat has been renewed, in ways not imagined. It will take a new savior to inspire the masses, and once again lead those willing to fight against oppression... -
![Rise of the Alliance by Ryk Brown]()
Rise of the Alliance by Ryk Brown
Rated: 4.34 of 5 stars · 26 ratingsEpisode 12A new ally providing aid…An old ally joining the fight…Their resources growing with each passing day…Their homeworld finally on the road to recovery…Things finally seem to be coming together for Captain Scott and the Alliance, as he takes his forces on the offensive. However, the Jung may in turn give him more trouble than he bargained for... -
![Salvation Lost by Peter F. Hamilton]()
Salvation Lost by Peter F. Hamilton
Rated: 4.30 of 5 stars · 30 ratingsThe comparative utopia of twenty-third century Earth is about to go dreadfully awry when a seemingly benign alien race is abruptly revealed to be one of the worst threats humanity has ever faced. Driven by an intense religious extremism, the Olyix are determined to bring everyone to their version of god as they see it...Categorized as:
colonization exploration space-opera space-travel action-adventure adult aliens audiobook -
![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:
colonization exploration space-opera space-travel action-adventure adult aliens audiobook -
![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... -
![A Line in the Sand by Ryk Brown]()
A Line in the Sand by Ryk Brown
Rated: 4.48 of 5 stars · 16 ratingsPart 2: Episode 14An enemy lashing out in desperation…An alliance poised to expand…A new fleet of ships to help them…A covert mission to get answers…The Dusahn Empire has been contained for the moment. But there is much work to be done in order to keep them from reasserting their dominance over the Pentaurus sector... -
![Rise of the Corinari by Ryk Brown]()
Rise of the Corinari by Ryk Brown
Rated: 4.22 of 5 stars · 18 ratingsA time to recover…A chance to make a new ally…A brief respite to repair and rearm…An opportunity for a people to regain their honor…For every civilization there comes a moment when a stand must be made against tyranny.The time has come for the Alliance to draw a line in the sand... -
![A Show of Force by Ryk Brown]()
A Show of Force by Ryk Brown
Rated: 4.31 of 5 stars · 27 ratingsEpisode 13 The liberation old worlds… The addition of new allies… The fall of a regime… The death of a trusted friend… The Aurora begins clearing a 20 light year sphere of safety around Earth, taking out Jung forces as they liberate the core systems. However, Captain Scott and the Alliance quickly discover that not every world wants to be liberated, and the Jung have a few surprises of their own... -
![Slow Time Between the Stars by John Scalzi]()
Slow Time Between the Stars by John Scalzi
Rated: 4.20 of 5 stars · 20 ratingsAn artificial intelligence on a star-spanning mission explores the farthest horizons of human potential—and its own purpose—in a mind-bending short story by New York Times bestselling author John Scalzi.Equipped with the entirety of human knowledge, a sentient ship is launched on a last-ditch journey to find a new home for civilization. Trillions of miles. Tens of thousands of years... -
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![Plains of Utopia: Colony Six Mars (Colony Mars Series Book 6) by Gerald M. Kilby]()
Plains of Utopia: Colony Six Mars (Colony Mars Series Book 6) by Gerald M. Kilby
Rated: 4.50 of 5 stars · 6 ratingsXenon Hybrid, the Red Planet’s ceremonial head-of-state, has not been seen for many years after withdrawing to an isolated enclave in the far north where he steadily built up a following of citizens seeking out an alternative lifestyle. They bother no one, and no one bothers them...Categorized as:
colonization exploration space-travel action-adventure adult book fiction hard-sci-fi -
![Head of the Dragon by Ryk Brown]()
Head of the Dragon by Ryk Brown
Rated: 4.31 of 5 stars · 26 ratingsTime is running out…An ally has all but fallen…Resources are running low…The time for attack has come...The Alliance must strike deep into the heart of the empire.This time, the Aurora will be going home, or going to her grave.“Head of the Dragon” is a 133,000 word novel, and is the 6th episode in The Frontiers Saga... -
![Explorer by C.J. Cherryh]()
Explorer by C.J. Cherryh
Rated: 4.30 of 5 stars · 27 ratingsIt has been nearly ten years since the starship Phoenix returned to Alpha, the station orbiting the world of the atevi, which had been abandoned following a rift between a faction of the station's inhabitants and the spacers' Pilot's Guild...Categorized as:
colonization exploration space-opera space-travel action-adventure adult aliens audiobook -
![The Expanse by Ryk Brown]()
The Expanse by Ryk Brown
Rated: 4.30 of 5 stars · 27 ratingsEpisode 7A newly repaired ship…A willing and eager crew…A host of new technologies…A long anticipated return home…The crew of the UES Aurora finally has the chance to fulfill their mission, but first they must complete a long and dangerous journey across a thousand light years of unexplored space.“The Expanse” is a 104,000 word novel, and is the 7th episode in The Frontiers Saga... -
![New Canaan by M.D. Cooper]()
New Canaan by M.D. Cooper
Rated: 4.30 of 5 stars · 10 ratingsTanis Richards has spent half her life on the Intrepid, guiding the great colony ship, and its two million passengers, across hundreds of light-years. She has risked life, limb and those dearest to her to get this far. Now she’s within reach of her goal; the New Canaan System, and a normal, stable life. The kind she's only dreamed about...Categorized as:
ai colonization exploration space-opera space-travel action-adventure adult audiobook -
![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:
colonization exploration space-opera space-travel action-adventure adult aliens audiobook -
![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:
colonization exploration space-opera space-travel action-adventure adult aliens audiobook -
![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... -
![The Quantum War by Derek Künsken]()
The Quantum War by Derek Künsken
Rated: 4.25 of 5 stars · 12 ratingsThe eagerly awaited third volume in the number one bestselling Quantum Evolution series. An all-new, ground-breaking, action-packed new science fiction adventure set in the universe of The Quantum Magician and The Quantum Garden... -
![Tau Ceti by Laurence E. Dahners]()
Tau Ceti by Laurence E. Dahners
Rated: 4.21 of 5 stars · 14 ratings“Tau Ceti" is the sixth in a series of near future SciFi/Thrillers whose young heroine Ell Donsaii has a nerve mutation which has made her a genius and an athletic phenomenon.In “Tau Ceti!”, she is continuing to find uses for the quantum entangled wormholes that she has discovered. These wormholes aren’t big enough to send people through, yet they are making huge changes in our world... -
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![Habitats by Laurence E. Dahners]()
Habitats by Laurence E. Dahners
Rated: 4.21 of 5 stars · 14 ratings“Habitats" is the seventh in a series of near future SciFi/Thrillers whose youngheroine Ell Donsaii has a nerve mutation which has made her a genius as well as an athletic phenomenon.In “Habitats,” she is continuing to find uses for the quantum entangled wormholes that she discovered. These wormholes aren’t big enough to send people through, yet they are making huge changes in our world... -
![Prelude to Extinction by Andreas Karpf]()
Prelude to Extinction by Andreas Karpf
Rated: 4.21 of 5 stars · 14 ratingsEarth's first interstellar mission -- An alien colony in ruins -- Their fight for survival has only just begun.When Jack Harrison climbed down the short ladder from the airlock and stepped onto the debris covered soil, the ground crackled with the sound of dried leaves and twigs... -
![Celestia CV-02 by Ryk Brown]()
Celestia CV-02 by Ryk Brown
Rated: 4.26 of 5 stars · 27 ratingsEpisode 8A world divided…A ship under construction…A military scrambling to prepare a defense…A moment that everyone hoped would never come…The Earth Defense Force must find a way to defend their world against invasion by the Jung Empire. More importantly, they must protect their newest ship, the UES Celestia, as she may be their last hope... -
![Inhibitor Phase by Alastair Reynolds]()
Inhibitor Phase by Alastair Reynolds
Rated: 4.19 of 5 stars · 16 ratingsMiguel de Ruyter is a man with a past.Fleeing the 'wolves' - the xenocidal alien machines known as Inhibitors - he has protected his family and community from attack for forty years, sheltering in the caves of an airless, battered world called Michaelmas. The slightest hint of human activity could draw the wolves to their home, to destroy everything ... utterly... -
![Tales of Known Space: The Universe of Larry Niven by Larry Niven, Rick Sternbach]()
Tales of Known Space: The Universe of Larry Niven by Larry Niven, Rick Sternbach
Rated: 4.16 of 5 stars · 19 ratingsRanging from the 20th Century to the 31st, these interconnected stories trace Man's expansion and colonization throughout the galaxy...Becalmed in hellHowie's spaceship had a malfunction...but it might be only psychosomatic!Wait it outHe was trapped on Pluto...and all his assets were frozen!The borderland of SolForward possessed the ultimate weapon..Categorized as:
space-opera space-travel action-adventure adult aliens anthologies fiction hard-sci-fi -
![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:
colonization exploration space-opera space-travel action-adventure adult aliens audiobook
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