Books like 'The Gatekeepers'
Readers who enjoyed The Gatekeepers by Nathan Hystad also liked the following books featuring the same tropes, story themes, relationship dynamics and character types.
sc-fi supernatural action / adventure military, war & conflict aliens first-contact time-travel invasion colonization
-
Never Surrender by Michael Anderle
Rated: 4.54 of 5 stars · 27 ratingsBethany Anne and those in the Etheric Empire have conquered the Aliens who would conquer Earth.However, there are a few that do not appreciate the new rules. Dealing with insurrectionists down on the planet, or with a large military rebellion coming from another system, Bethany Anne and team are ready and willing to give everyone a piece of their mind... -
![Compelling Evidence by Michael Anderle]()
Compelling Evidence by Michael Anderle
Rated: 4.54 of 5 stars · 24 ratingsThe Bitch is back, and she means business. Two hundred years ago an alien race altered the course of the galaxy’s history. Just not in the way they intended.** AMAZON Top 100 Best Selling Author **Bethany Anne Nacht has denied the Kurtherians at every turn. After two centuries of war the Kurtherians have gone into hiding, and so has the Queen Bitch... -
![Sued For Peace by Michael Anderle]()
Sued For Peace by Michael Anderle
Rated: 4.49 of 5 stars · 27 ratingsGreed and Fear, two emotions that rule both individuals...and Countries. Now, China has decided that they will do whatever it takes to acquire TQB technology. There was a glaring flaw in their plan. When they kill an unborn little baby in a raid, the Queen Bitch is Released. Now, China has two options...Kill Bethany Anne, or Sue For Peace... -
![The Dark Messiah by Michael Anderle, Kat Lind]()
The Dark Messiah by Michael Anderle, Kat Lind
Rated: 4.49 of 5 stars · 23 ratingsMichael returns to fulfill a promise to his love, but the world isn't the same place. Michael, the Archangel himself, has returned after a hundred and fifty years rejuvenating in the Etheric Dimension. Now, the most powerful male Vampire the world had ever known is back. The problem? The world went through an Apocalypse and what little honor and justice that previously existed, is gone... -
-
![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... -
![Liberty by Nick Webb]()
Liberty by Nick Webb
Rated: 4.36 of 5 stars · 14 ratingsWar. It rages across United Earth space, claiming millions of lives. The Swarm have returned, larger, more fierce, and more technologically advanced than ever before. The voice from Saturn's moon Titan claiming to be Tim Granger is warning humanity that this time, the Swarm may be unstoppable... -
![Sector Force by Jamie Davis, Michael Anderle]()
Sector Force by Jamie Davis, Michael Anderle
Rated: 4.67 of 5 stars · 6 ratingsTardex is safe and the Marshals of Lone Wolf Squadron stand down for some much needed rest and relaxation.Needless to say, the frontiers of the Etheric Federation don’t stay peaceful for long.The growing squadron must battle sinister forces threatening their part of the frontier.A delegation arrives from a neighboring system to request aid from Commander Beau Ward and his pilots... -
![Countdown by Michael Atamanov]()
Countdown by Michael Atamanov
Rated: 4.41 of 5 stars · 23 ratingsAt long last, an extraterrestrial civilization reached out and made the First Contact. However, no one on Earth took their communique for the genuine article. In a similar vein, very few people appreciated just how little time our new suzerains had promised to keep our planet safe.Regardless, the end of their message showed humankind how to access a mysterious game...Categorized as:
aliens colonization first-contact invasion action-adventure adult alternate-history ancient-china -
![Old Enemy by Nathan Hystad]()
Old Enemy by Nathan Hystad
Rated: 4.40 of 5 stars · 10 ratingsWhen all new threats are dealt with, old enemies emerge from the shadows. Dean Parker has brought his wife home, and he’s looking forward to relaxing and having a future with his family on New Spero. The Iskios vortex is gone, vanquished by the Hero of Earth, but unforeseen enemies linger in the universe. The Bhlat send a warning to the humans, one that suggests the Kraski may not all be dead...Categorized as:
aliens colonization first-contact invasion time-travel action-adventure adult apocalyptic -
![I Married a Mothman by Regine Abel]()
I Married a Mothman by Regine Abel
Rated: 4.40 of 5 stars · 10 ratingsHe’s everything she never knew she wanted.When Venus embarked on a luxury cruise, she never expected to rescue a young Promethean demi-god—or that he’d bind her as his guardian... -
![Called by Ell Leigh Clarke, Michael Anderle]()
Called by Ell Leigh Clarke, Michael Anderle
Rated: 4.52 of 5 stars · 16 ratingsAfter earning access to a secret base beneath their safe house, Molly and her team are beyond excited by the "toys" they find. However, before they get to explore the super advanced tech and ships they find there, they need to pass one more test. A test which may be more convoluted and intriguing than they could possibly have imagined... -
![Cyborg by Anna Hackett]()
Cyborg by Anna Hackett
Rated: 4.38 of 5 stars · 23 ratingsScientist Ever Haynes was shocked when she was abducted by alien slavers...but the last thing she expected was to find herself pregnant with a cyborg's baby.Ever has been fighting for her life since her abduction, and the only good thing to happen to her was one heated night with a mysterious prisoner--a connection, a flash of light in the darkness. But then he was rescued and she was left behind... -
![Sanctioned by Ell Leigh Clarke, Michael Anderle]()
Sanctioned by Ell Leigh Clarke, Michael Anderle
Rated: 4.53 of 5 stars · 15 ratingsGeneral Lance Reynolds needs Molly’s team for a clandestine operation. The only problem? It kicks off in one week, and the Syndicate needs cleaning up once and for all. So what is a girl to do? Go on the offensive, of course. But with the ultimate take down planned for the bad guys of Planet Estaria, you know it’s going to be EPIC... -
![I Married An Incubus by Regine Abel]()
I Married An Incubus by Regine Abel
Rated: 4.27 of 5 stars · 15 ratingsA match made in Hell…When investigative reporter Malaya Velasco accidentally uncovers the corruption of one of the highest judges of the Obosian justice system, she is framed and condemned to a life sentence on the deadly prison planet Molvi. In her despair, she begs the Prime Mating Agency for an arranged marriage with one of the Wardens of the prison... -
-
![Reprisal by Charles Tillman, Michael Anderle]()
Reprisal by Charles Tillman, Michael Anderle
Rated: 4.68 of 5 stars · 11 ratingsAncient Warrior—Vampire—Queen’s Bitch...Akio accepted his Queen’s charge to stay behind and protect humanity from the Forsaken scourge.She never said it would be easy.An isolated police report about an island overtaken by feral, red-eyed creatures savaging humans spurs Akio to investigate... -
![Weapons Master by Anna Hackett]()
Weapons Master by Anna Hackett
Rated: 4.52 of 5 stars · 14 ratingsA grumpy cyborg weapons master collides with a feisty mechanic from Earth who turns his ordered existence upside down.Abducted from her exploration ship and enslaved on a desert world, mechanic Bellamy Walsh has fought for her survival. She’s had to fight for everything in her life, and she doesn’t ever expect things to be easy... -
![Incoming by Mel Todd]()
Incoming by Mel Todd
Rated: 4.50 of 5 stars · 6 ratingsGetting back home with the knowledge that aliens are coming for your planet is one thing. Figuring out how to get anyone in a position of power to listen to you is something else. With the knowledge that the Elentrin are weeks away from Earth, McKenna must persuade the government that she isn’t crazy and that aliens are coming. But first she has to convince friends and family... -
![Volunteer for the Alien Bride Lottery by Margo Bond Collins]()
Volunteer for the Alien Bride Lottery by Margo Bond Collins
Rated: 4.50 of 5 stars · 6 ratingsI didn’t want to compete in the Alien Bride Games. But I would do anything to save my sister.Hannah’s just a kid. Yeah, sure, she’s 21, old enough for her name to be drawn in The Alien Bride Lottery. But she’s got her whole life in front of her.I, on the other hand, have nothing left to live for... -
![Commander by Mel Todd]()
Commander by Mel Todd
Rated: 4.50 of 5 stars · 6 ratingsDiscovering an Artificial Intelligence lives in your head, strike one. Having the Artificial Intelligence explain aliens are the origin of shifters on Earth, strike two. Having it announce you are the commanding officer of the earth shifters, strike three... -
![Lucky Justice: Lucky's Marines | Book Seven by Joshua James]()
Lucky Justice: Lucky's Marines | Book Seven by Joshua James
Rated: 4.50 of 5 stars · 6 ratingsA simple mission gone impossibly wrong. Ambushed by an enemy that shouldn't exist, Lucky and his Marines must overcome powerful forces with limitless resources – and a princess with limitless ego. But Sergeant Lucky Savage has a powerful weapon of his own. Whether he can manage to control it is an open question... -
![Defender by Anna Hackett]()
Defender by Anna Hackett
Rated: 4.38 of 5 stars · 20 ratingsRescued from alien slavers, the only place she feels safe is in the brawny arms of a big, gruff cyborg... Astrophysicist Dr. Jayna Lennox's life imploded the day her ship was attacked by aliens. Through months of captivity, she's survived by shutting down and not feeling. Then she's freed by the House of Rone cyborgs and finds herself in the arms of huge, tough Mace... -
![Rebirth by Ell Leigh Clarke, Michael Anderle]()
Rebirth by Ell Leigh Clarke, Michael Anderle
Rated: 4.48 of 5 stars · 15 ratingsMolly is back from the dead. And now even more capable. But the transformation is not without more serious issues. Problems that not even ADAM can help with. Feeling cursed, she undergoes a Vision Quest. The rest of the team prepare for the General's clandestine assignment back at the base. But with the fate of the Federation hanging in the balance, a question arises... -
![Challenges by Natalie Grey, Michael Anderle]()
Challenges by Natalie Grey, Michael Anderle
Rated: 4.58 of 5 stars · 12 ratingsTabitha has one night to challenge her past, and her belief in herself. Normally, a person would fail. However, Tabitha has an ace in the hole. A female vampire with hundreds of years of life and wisdom and she is willing to protect Tabitha and tell her the truth. Whether Tabitha wants it, or not. And whether the Vampire wants to hurt others is not in question... -
![Beast by Anna Hackett]()
Beast by Anna Hackett
Rated: 4.32 of 5 stars · 24 ratingsAbducted by alien slavers and taken to a lawless desert world, the last thing starship pilot Mia expects is to find herself in the protective, brawny arms of a wild, blue-skinned alien! Rescued by gladiators on the alien world of Carthago, Mia is working to find other abducted humans who are still lost. But someone else also needs her help--the untamed alien who's saved her twice... -
-
![Claimed for the Alien Bride Lottery by Margo Bond Collins]()
Claimed for the Alien Bride Lottery by Margo Bond Collins
Rated: 4.38 of 5 stars · 8 ratingsI thought I’d escaped being given to an alien warrior. I was wrong.I was one hour away from washing out of the Alien Bride Games.None of the Khanavai warriors had chosen me, and I was scheduled on the next shuttle off the filming station.But then a bright red alien passed me in a hallway—and the next thing I knew, we were all over each other... -
![Hero to the End by Timothy Ellis]()
Hero to the End by Timothy Ellis
Rated: 4.38 of 5 stars · 8 ratings'If we fall, humanity is lost. Those are the stakes.' The Darkness War rages on, and a war weary Jonathon Hunter faces obstacles which only humans can create, while an enemy which keeps growing stronger continues to force him to retreat... -
![Lucky Revenge by Joshua James]()
Lucky Revenge by Joshua James
Rated: 4.38 of 5 stars · 8 ratingsThe universe if FUBAR. Just when things couldn't get any worse, humanity finds a way. The invasion force is in shambles. The universe is on fire. An ancient enemy is about to end mankind for good. Sgt. Lucky Lee Savage saw it all coming. He warned all the right people. He took all the right steps. Look what that got him... -
![New Alliance by Nathan Hystad]()
New Alliance by Nathan Hystad
Rated: 4.38 of 5 stars · 8 ratingsDean Parker thought he was going to coast into retirement. He was wrong.Things have slowed down for Dean and Mary as they manage the expanding human colonies on Haven, New Spero, and Earth-until they receive a distress call from the Keppe.Magnus and Natalia are in the midst of a three-year exploration mission on the alien vessel, but mysteriously vanish with less than a year left to go...Categorized as:
aliens colonization first-contact invasion time-travel action-adventure adult audiobook -
![Lucky Empire by Joshua James]()
Lucky Empire by Joshua James
Rated: 4.38 of 5 stars · 8 ratingsMankind's luck has run out... As humanity rushes toward universal slaughter, the last Marine standing in the way of extinction is the least qualified one around — just ask him. With the conspiracy now fully in power, Lucky & Co. have turned into fugitives within the Empire... -
![Big Dicker by K.C. Cross, J.A. Huss]()
Big Dicker by K.C. Cross, J.A. Huss
Rated: 4.38 of 5 stars · 8 ratingsWelcome to Mighty Minions Resort. Jimmy’s personal hell. All Jimmy wants is a booster shot of DNA scrambler so he never has to find his one-true soul mate. But life rarely goes the way you plan it. After dropping Xyla off on Blue Sand Beach for a little vacay with her sexbot girlfriends the Big Dicker has to make an emergency landing on the demon-themed Mighty Minions Resort... -
![Damned To Hell: A Kurtherian Gambit Series by Natalie Grey, Michael Anderle]()
Damned To Hell: A Kurtherian Gambit Series by Natalie Grey, Michael Anderle
Rated: 4.53 of 5 stars · 13 ratingsRisk Be Damned is part of the Best-Selling Kurtherian Gambit Series Risking One's Heart is often harder than Risking One's life. Jennifer is in a bind, and that doesn't even stop to consider she got herself stuck right in the spider's castle. No, she did something a little rash, more for herself, than anything else... -
![The Theos by Nathan Hystad]()
The Theos by Nathan Hystad
Rated: 4.30 of 5 stars · 10 ratingsSome secrets prefer to stay buried. When Dean’s closest ally is kidnapped by an ancient race, his grief threatens to turn to madness. With the support of his friends, he embarks on a mission to get his loved one back, and stop the eventual destruction of the known Universe. But Dean can’t do it without solving an age-old mystery...Categorized as:
aliens colonization first-contact invasion time-travel action-adventure adult apocalyptic -
![Cascade by Joshua James]()
Cascade by Joshua James
Rated: 4.30 of 5 stars · 10 ratingsOPERATION CASCADE IS UNDERWAY.The changes on Enceladus are causing ripples throughout the solar system — and beyond. But the Artifact isn't done yet.The end is only the beginning...Cascade, the second book in the Saturn's Legacy series, is a sci-fi thriller full of mystery, intrigue, and epic action from the depths of the ocean to the edge of outer space... -
![Betrayer by C.J. Cherryh]()
Betrayer by C.J. Cherryh
Rated: 4.31 of 5 stars · 23 ratingsBetrayer (Foreigner, Book 12)The twelfth novel in Cherryh’s Foreigner space opera series, a groundbreaking tale of first contact and its consequences…In the wake of civil war, Bren Cameron, the brilliant human diplomat of the alien atevi civilization, has left the capital and sought refuge at his country estate, Najida... -
-
![Rhal by Erin Tate]()
Rhal by Erin Tate
Rated: 4.25 of 5 stars · 12 ratingsNew Edition found hereSometimes a lie is the only way to get to the truth. Rhal fa Adar—Ujal assassin—is a liar and Cara is more than ready to beat the truth out of him.To Cara Marte, the Ujal are everyday average people—er, aliens—who occasionally grow fins and scales... -
![Artifact by Joshua James]()
Artifact by Joshua James
Rated: 4.25 of 5 stars · 12 ratingsFOR MILLIONS OF YEARS, SATURN HID AN ALIEN SECRET.IN 2065, HUMANITY WILL FIND IT.Lowell Carpenter is a disgraced Marine assigned to a remote US research station on Saturn's moon Enceladus, where scientists have made an extraordinary discovery in the ocean below.A special forces team, led by Lowell’s murderous former commanding officer, shows up to investigate... -
![Cloaked by Ell Leigh Clarke, Michael Anderle]()
Cloaked by Ell Leigh Clarke, Michael Anderle
Rated: 4.49 of 5 stars · 13 ratingsNot everything someone sees is real. Now, both sides of the story are tested by those who hide their reasons. For some, the reasons are good, for others not so much. Molly, Oz, Joel, Sean, Jack and the others are back in Action, supporting the Etheric Federation to stop a planet from being destroyed... -
![Chasing the Shadows by Maria V. Snyder]()
Chasing the Shadows by Maria V. Snyder
Rated: 4.29 of 5 stars · 24 ratingsYear 2522. Lyra Daniels is dead.Okay, so I only died for sixty-six seconds. But when I came back to life, I got a brand new name and a snazzy new uniform. Go me! Seriously, though, it's very important that Lyra Daniels stays dead, at least as far as my ex-friend Jarren, the murdering looter, knows.While dying is the scariest thing that's happened to me, it morphed my worming skills...Categorized as:
aliens first-contact invasion time-travel action-adventure archaeology audiobook book -
![Game Changer by Michael Atamanov]()
Game Changer by Michael Atamanov
Rated: 4.40 of 5 stars · 16 ratingsOur galaxy is at war! Great alien races have just clashed in desperate combat and its aftershocks are echoing even in our backwater. The Geckho - protectors and overlords of planet Earth - join the global conflict too. Is it a good thing for humanity? Hard to say. On one hand, the Geckho are too busy to defend our planet which doesn’t sound too good...Categorized as:
aliens colonization first-contact invasion action-adventure adult alternate-history audiobook -
![Centurion by Anna Hackett]()
Centurion by Anna Hackett
Rated: 4.40 of 5 stars · 16 ratingsRescued from her alien captors, the only person who makes her feel safe is a cold, emotionless cyborg. Abducted from her exploration ship, paramedic Sage McAlister has spent months locked in cells and labs belonging to the Edull. Rescued by the cool, powerful cyborgs of the House of Rone, she finds herself among fellow human survivors on the desert world of Carthago... -
![Independence by Nick Webb]()
Independence by Nick Webb
Rated: 4.19 of 5 stars · 16 ratingsWe hoped, desperately, that they came in peace. We were wrong. Thirty years after the Second Swarm War devastated Earth and its colonies, a powerful, mysterious alien ship has invaded our space. Entire planets are ravaged, whole moons shattered. Any starship sent against it never comes home... -
![Initiate by Joshua Anderle, Michael Anderle]()
Initiate by Joshua Anderle, Michael Anderle
Rated: 4.31 of 5 stars · 21 ratingsIt was just one fight, but it changed Kaiden Jericho's life forever.He was in a gang but was trying to change his future when a board member of the elite advanced academy NEXUS made a snap decision and offered him a chance. Then fate, or an unbalanced genius, offered him another... -
![Penitent by Dan Abnett]()
Penitent by Dan Abnett
Rated: 4.44 of 5 stars · 13 ratingsBook 2 in the Bequin seriesAlizebeth Bequin's world has been turned upside-down. Now she must choose who she will follow as Inquisitors Eisenhorn and Ravenor battle to discover the secrets at the heart of Queen Mab... -
![Claimed By Honor: A Kurtherian Gambit Series by Justin Sloan, Michael Anderle]()
Claimed By Honor: A Kurtherian Gambit Series by Justin Sloan, Michael Anderle
Rated: 4.41 of 5 stars · 14 ratingsMichael has moved on, can his Justice Enforcer make a difference?Does the Sun come up in the morning?The New York City-State wakes up and their world has been shaken to its core. The Enforcers have been scattered, but they aren't finished. This vampire is but a bump in their road to keeping the city-state in the hands of the CEO's... -
-
![Retribution by Ell Leigh Clarke, Michael Anderle]()
Retribution by Ell Leigh Clarke, Michael Anderle
Rated: 4.47 of 5 stars · 12 ratingsSometimes, retribution is a slippery slope towards self-destruction. When the General Invites Molly and her crew to the ArchAngel, it's not long before news also arrives of a serious threat to the Federation. It falls to Molly and her team to deal with the threat, which winds up in an intense hostage situation... -
![Plundered by Tana Stone]()
Plundered by Tana Stone
Rated: 4.25 of 5 stars · 23 ratingsMy sister gave herself to the raider warlord to save me. Now I’m hunting him down and getting her back.I’ve never forgiven myself for letting that brute drag her off my ship, and I’ve done nothing but search for his horde of warships since he let my ship go free... -
![Ruins of the Earth by Christopher Hopper, J.N. Chaney]()
Ruins of the Earth by Christopher Hopper, J.N. Chaney
Rated: 4.27 of 5 stars · 21 ratingsA secret buried in the Antarctic.A puzzle unsolved for thousands of years.And a Brooklyn-born Master Gunnery Sergeant who's royally pissed that he has to babysit the researchers sent to figure it all out.Patrick "Wic" Finnegan's last op as a Marine Raider before retirement sends him to the frozen Ellsworth Subglacial Highlands... -
![Six Bits by Laurence E. Dahners]()
Six Bits by Laurence E. Dahners
Rated: 4.33 of 5 stars · 6 ratingsWarning! This book is a collection of short stories, novelettes, and novellas. Two of them, Porter and Macos have been available on Amazon as stand-alone stories in the past, but readers complained that they were too short to justify Amazon’s minimum $0.99 price... -
![Click Click Boom by Jonathan Yanez, Justin Sloan]()
Click Click Boom by Jonathan Yanez, Justin Sloan
Rated: 4.33 of 5 stars · 6 ratingsRiot has tasted the turbulence of the universe, and she loves it. With echoes of wonder and cries for help, swarms of claws and clans under siege, the vastness calls out for a hero. Instead, Riot and her War Wolves will rush in to save them. But after she's blown some stuff up... -
![The Incarnator by Roman Prokofiev]()
The Incarnator by Roman Prokofiev
Rated: 4.33 of 5 stars · 6 ratingsWhen the shattered fragments of the Black Moon collapsed onto planet Earth, splitting continents apart and flooding them with raging oceans, Darkness descended onto our world. The eruptions of hostile energy from behind the Edge distorted the laws of the physical world, creating new life forms which now threaten to take over the planet...
Or - use our amazing romance book finder to get recommendations based on your favorite content tropes and themes. Mix and match at will.
