Books like 'Antigen'
Readers who enjoyed Antigen by R.A. Steffan also liked the following books featuring the same tropes, story themes, relationship dynamics and character types.
futuristic science fiction aliens m-f bodyguard-hero cold hero suspense forced proximity competent heroine independent heroine
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Three Babies and the Alien Warrior by Honey Phillips
Can a jaded alien warrior redeem himself in order to protect the woman and children who need him? After a painful divorce, Linda takes a job as the chief administrator of a rural hospital. Her hard won peace is shattered when strange black-suited men raid the maternity ward and she finds herself on board an alien spaceship... -
![Elanie & the Empath by Jess K. Hardy]()
Elanie & the Empath by Jess K. Hardy
Half-human. Half-machine. Totally unprepared for love. I wasn’t built for emotions. I was built for efficiency. As a bionic, part organic and part AI, I’ve spent my life working aboard my interstellar pleasure cruise in rational, dispassionate contentment. But when I finally install my long-overdue hormone upgrade, everything changes. Fast... -
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![Daughter of the Alien Warrior by Honey Phillips, Bex McLynn]()
Daughter of the Alien Warrior by Honey Phillips, Bex McLynn
Can a grieving alien warrior and a desperate mother overcome their painful pasts through the shared love of a child? One year ago, Jade’s husband was killed and the baby she had wanted for so long disappeared. She has been searching for her daughter ever since. Nothing - not even being abducted by aliens - is going to stop her... -
![Imperator by Anna Hackett]()
Imperator by Anna Hackett
Rated: 4.44 of 5 stars · 20 ratingsSpace station security specialist Sam has done one thing since her abduction by alien slavers…fight to survive. But now one strong alien gladiator stands at her side and Sam knows she is no longer alone. Thrust into a lawless desert arena, Sam Santos has done terrible things in order to stay alive. As the Champion of Zaabha, she’s been fighting to find a way out... -
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![A Family for the Alien Warrior by Honey Phillips]()
A Family for the Alien Warrior by Honey Phillips
A grumpy alien warrior. A pregnant librarian. A ready-made family? Wanda has never hankered after excitement - or romance. A quiet life as a small town librarian suits her just fine. But while she doesn’t need a man, she does want a child. Just as her hard-earned dreams come true, she is abducted by aliens...Categorized as:
aliens forced proximity creative-anatomy m-f cold hero science fiction pregnancy abduction -
![Emperor by Anna Hackett]()
Emperor by Anna Hackett
When an experimental starship test goes horribly wrong, a scientist from Earth finds herself fighting for her survival, and her only lifeline is a wild, powerful alien king. Waking on an alien world, wracked by pain, Dr. Poppy Ellison is confused and adrift…until his voice calls to her in the darkness...Categorized as:
aliens cold hero m-f science fiction futuristic sweet heroine explicit-open-door length-medium -
![Core's Attack by S.E. Smith]()
Core's Attack by S.E. Smith
Thrust into a deadly game…. Avery Lennox has been called many names, but bond mate was never one of them... -
![Relic of Sorrows by Lindsay Buroker]()
Relic of Sorrows by Lindsay Buroker
Captain Alisa Marchenko finally has a lead on finding her daughter, but her passengers want her to take them on their quest instead. Even though the Star Nomad is her ship, they have power she cannot fight, and she finds herself with no choice but to accept another detour. But the ancient relic they seek has the ability to destroy worlds and is coveted by many...Categorized as:
aliens m-f competent heroine cold hero bodyguard-hero military science fiction futuristic -
![Possessed by the Alien Hero by Krista Luna]()
Possessed by the Alien Hero by Krista Luna
I live without emotion. Yet one touch from my fated mate shatters all my restraint. SOFIA. I did it! I helped cure the virus our enemy used to kill so many humans and Varool. Then I created a new one that will turn the tables on the bugs and win us the war. If we can release it into the heart of the attacking Swarm. Enter Yash. Tall. Aloof. Alien. Gorgeous. He’s even royalty of some sort...Categorized as:
aliens strong heroine cold hero creative-anatomy m-f science fiction humor futuristic -
![The Arcav Captain's Queen by Hope Hart]()
The Arcav Captain's Queen by Hope Hart
She wants her planet back. .. . .. But all he wants is her. Forced to become a monster to survive her father’s cruelties, Saria wants only one thing: To convince the Arcav King to help her lead her people out of the darkness and into the light. She has no intention of mating anyone. Least of all Roax- the bossy bodyguard who the Arcav King ordered to be her shadow...Categorized as:
aliens creative-anatomy m-f military science fiction futuristic non-human-hero explicit-plentiful -
![Saved by the Alien Hybrid by Lynell Miles]()
Saved by the Alien Hybrid by Lynell Miles
Commander Cordelia Normandy is desperate for redemption. After her catastrophic final flight mission, she sees her new assignment delivering colonists as a fresh start. At least, until she wakes from cryosleep to find herself caught in an interstellar war between an alien empire and their hybrid creations. As a hybrid rebel fighting against the empire that made him, Rentir has only known conflict... -
![Alien AI's Marine by Mina Carter]()
Alien AI's Marine by Mina Carter
He's the lone human male in a sea of lethal alien warriors. He's either gifted or suicidal. .. Kidnapped by aliens, rescued, and now on a secret base in a system he can't even pronounce, Major Jay Stephens has given up on a wing and a prayer. .. he's now on kicking butt and taking names. Especially when it comes to the alien AI who's risked everything, even her 'life' to protect him...Categorized as:
aliens non-human-heroine m-f science fiction military futuristic open-door length-short -
![Sanctuary for the Alien Warrior by Honey Phillips]()
Sanctuary for the Alien Warrior by Honey Phillips
Can an alien warrior and an orphaned infant provide a new beginning for a lonely woman? Tired of relentless hours, arrogant clients, and endless demands, Barbara is ready to abandon her career as a corporate attorney for a simpler life. She doesn’t expect that life to involve an alien abduction, an abandoned baby, and an all-too-intriguing alien warrior with a very friendly tail...Categorized as:
aliens m-f creative-anatomy strong heroine competent heroine science fiction futuristic alpha male -
![Heart Fate by Robin D. Owens]()
Heart Fate by Robin D. Owens
Rated: 4.21 of 5 stars · 24 ratingsWed to a wealthy older man when she was just a girl, Lahsin Yew runs away from her abusive home to find a new life. At seventeen, she? s about to enter her Second Passage, when her Flair? and perhaps her HeartMate? will be revealed. Lahsin finds sanctuary in a secret garden, where she meets Tinne Holly...Categorized as:
tortured heroine aliens m-f contemporary rape futuristic science fiction length-medium -
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![Alien in Disguise by Cara Bristol]()
Alien in Disguise by Cara Bristol
Hell hath no fury like a woman abducted by aliens…twice. The space cruise is supposed to be the vacation of a lifetime. Instead, Jessie Sayles gets abducted by aliens. After the rescue, she’s determined to sound the alarm that humans have been targeted by a galactic slave cartel... -
![Faith, Part 3 by Grace Goodwin]()
Faith, Part 3 by Grace Goodwin
Rated: 4.67 of 5 stars · 6 ratingsThe traitor within the Jax household has been found, and the repercussions are staggering, with Faith barely surviving and their mating destroyed. But Faith has always been unpredictable—just ask her sisters— and nothing will stop her from getting what she wants…and she wants Thor. Even if it kills her. Download now for the exciting conclusion to Faith's story! -
![Xenon by Regine Abel]()
Xenon by Regine Abel
What is dead is never truly gone. When she embarks on a rescue mission in an abandoned lab, the last thing Kate Lewis expects is for a long dead Xian Warrior to rise from his ashes. Then he claims she’s his soulmate. Although she doesn’t doubt his sincerity, Kate cannot help but question the truth of his words...Categorized as:
multicultural aliens suspense m-f hurt-comfort creative-anatomy competent heroine strong heroine -
![Of A Darker Void by G.S. Jennsen]()
Of A Darker Void by G.S. Jennsen
Rated: 4.50 of 5 stars · 8 ratingsWhen man and machine are one and the same, death is no longer an inevitability. But in the darkest reaches of space, neither is life. Diplomat. Rebel. Fugitive. Nika Tescarav has lived many lives, though she no longer remembers most of them... -
![The Iriduan's Mate by Susan Trombley]()
The Iriduan's Mate by Susan Trombley
A former elite Iriduan soldier, Shulgi lives with many regrets. .. He’s determined to redeem himself by curing the mate imprinting affliction that affects Iriduan males. Unfortunately, the necessity for secrecy makes it difficult to spread the cure to those males in need of it most... -
![Alien Commander's Mate by Mina Carter]()
Alien Commander's Mate by Mina Carter
Alone. Ill. She’ll do anything to find her kids. Both her children taken by the Lathar and her home destroyed in the process, Amanda Kallson is at her wits end and desperate. With nothing left to tie her to Earth, she’ll do anything to track down her daughters… even take an alien warriors crazy deal. It doesn’t hurt that said alien warrior is tall, ripped and as handsome as hell...Categorized as:
suspense aliens m-f futuristic science fiction non-human-hero length-novella explicit-open-door -
![Legion by Regine Abel, Juno Wells]()
Legion by Regine Abel, Juno Wells
He gave her his soul, but she couldn’t hold it. Ayana has devoted her life training to join the Vanguard, an elite intergalactic military force dedicated to fighting back the Kryptids who nearly destroyed Earth. Only the most powerful psychics are chosen...Categorized as:
aliens multicultural creative-anatomy black-mc suspense m-f competent heroine bodyguard-hero -
![A Very Arcav Christmas by Hope Hart]()
A Very Arcav Christmas by Hope Hart
Rated: 4.30 of 5 stars · 13 ratingsBabies, weddings, and Christmas. .. oh my! For the human women on Arcavia, there's plenty to celebrate during the holidays. Sure, the Grivath are a constant threat, but with a surprise wedding to plan, a baby on the way, and even a visit from Santa, the first Arcav Christmas is sure to be incredible... -
![North by Anna Hackett]()
North by Anna Hackett
We survived the invasion and beat the aliens. But they left something behind…. I was born to protect. I’m a Connors, a soldier like my father before me, and I’m the medic for Hunter Squad. Every time we go out to hunt the mutated monsters the aliens left behind, I’m there to treat anyone who gets hurt. But sometimes, I can’t always save everyone, and that haunts me... -
![Alien Duke's Fated Mate by Mina Carter]()
Alien Duke's Fated Mate by Mina Carter
She's the best pilot in the galaxy. .. He's an arrogant alien duke. Major Zara Reid has one mission - prove human pilots can fly alongside the alien Latharians. She didn’t expect their arrogant Lord Starfighter to try and undermine her at every turn... -
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![Adaptation: Book 2 by Pepper Pace]()
Adaptation: Book 2 by Pepper Pace
Carmella was still a teen when the Motherships first appeared dotting the skies over the Earth. For years the world tried to normalize while the silent Motherships hovered. And then they arrived, promising that they meant no harm. But within 10 years, 80% of the world's population would be wiped out. Including everyone that Carmella loved...Categorized as:
aliens multicultural black-mc m-f dystopian science fiction futuristic african-american -
![Rose Point by M.C.A. Hogarth]()
Rose Point by M.C.A. Hogarth
Rated: 4.26 of 5 stars · 13 ratingsReese is only just getting used to running the Earthrise in the black—and with an Eldritch in her crew—when a trip to a colony world gives rise to a whole new Hirianthial is showing powers that even the Eldritch rarely have, and that only in legend. He badly needs training, support and advice, and the only place he can find them is. .. at home...Categorized as:
aliens multicultural black-mc competent heroine cold hero science fiction futuristic length-long -
![Manu by Anna Hackett]()
Manu by Anna Hackett
Rated: 4.28 of 5 stars · 11 ratingsAs the battle against the invading aliens intensifies, a group of bad boy bikers and mercenaries will stand and fight for humanity’s survival…. When former berserker Manu Rahia lost his leg on a mission, he was forced to leave his squad... -
![Hemi by Anna Hackett]()
Hemi by Anna Hackett
Rated: 4.30 of 5 stars · 10 ratingsIn the middle of an alien invasion, a big, tough, tattooed former mercenary is finally going to chase down his woman. Camryn McNab knows love is a lie. Okay, maybe not for everybody--her fellow soldiers on Squad Nine have managed to fall in love in the middle of a vicious alien attack. But it's not for her. She comes from two people incapable of love...Categorized as:
aliens independent heroine m-f military science fiction futuristic length-short audiobook -
![Levi by Anna Hackett]()
Levi by Anna Hackett
Rated: 4.30 of 5 stars · 10 ratingsIn the middle of an alien invasion, a bad boy berserker collides with a spunky mechanic on a dangerous sabotage mission. Levi King has always lived rough. Raised by a biker dad, he fought for everything he had—including being president of the Iron Kings motorcycle club. But when the aliens invaded, he lost it all...Categorized as:
aliens independent heroine m-f dystopian military science fiction futuristic length-short -
![Taming Jax by Mikayla Lane]()
Taming Jax by Mikayla Lane
Rated: 4.33 of 5 stars · 9 ratingsJaxson Adronatof had vowed as a child that she would spend her life hunting the evil that had slaughtered her parents and help those like her, who were different. For 15 years, she’d been the leader of a resistance force and one stubborn, arrogant and frustratingly gorgeous alien claiming she’s his mate isn’t going to deter her from that vow... -
![Alien Retribution by Sadie Carter]()
Alien Retribution by Sadie Carter
Rated: 4.38 of 5 stars · 8 ratingsSince the day his family was murdered, Boris has been obsessed with vengeance. The last thing he needs in his life is a mate. Besides, what sort of female would want a scarred, crippled male who has taken a vow of silence? Nope, there is no room in his life for a female. Then he meets Nassir. Beautiful. Fragile. Distant... -
![Wrath by Regine Abel]()
Wrath by Regine Abel
She conquered death. Can she conquer life? Kwan’s dreams of joining the Vanguard finally comes true. Unfortunately, a recent tragedy dampens the joy of this experience. She hopes that reuniting with her long-time friend Linette and embarking on epic rescue missions will help bury painful memories...Categorized as:
multicultural creative-anatomy angst suspense m-f forced proximity hurt-comfort strong heroine -
![Seeking Vector by Cynthia Sax]()
Seeking Vector by Cynthia Sax
Rated: 4.60 of 5 stars · 5 ratingsA cyborg with a secret… A female seeking the truth…. Vector, the C Model captain of the Freedom, is a cyborg many warriors wish to emulate. He fights fiercely, leads with honor, has earned the respect and loyalty of his crew. But no being, not even a cyborg, is perfect. Since arriving at the Homeland, Vector has been hiding a dark truth about his past...Categorized as:
m-f black-mc competent heroine futuristic military science fiction tall-heroine length-short -
![Callim's Challenge - A Sci-Fi Alien Romance: The Quasar Lineage Book 5 by Pearl Tate]()
Callim's Challenge - A Sci-Fi Alien Romance: The Quasar Lineage Book 5 by Pearl Tate
Rated: 4.60 of 5 stars · 5 ratingsShelly. Abducted from Earth, contracting a deadly disease, getting matched up to an alien I’ve never met… welcome to the chaos that’s my life. Now, I’m on a spaceship traveling to Quasar to get the vaccine I need to survive and meet my future mate. I’m used to being at the mercy of others. First, it was my drug-addicted mother and eventually the foster care system... -
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![Mihile's Marvel by Pearl Tate]()
Mihile's Marvel by Pearl Tate
Rated: 4.60 of 5 stars · 5 ratingsMihile. I hate being trapped underground. With the planet Quasar uninhabitable on the surface, my entire life has been spent without sunlight. Since I was born blind, it's kind of fitting. With my lack of vision and light skin and hair, I represent not only the most unique features of our species, but also the most shunned... -
![Taken by the Spare by Vilyn DeVine]()
Taken by the Spare by Vilyn DeVine
Rated: 4.60 of 5 stars · 5 ratingsI had one day left on my shift when chaos erupts. Taking a job as a correctional officer on a ship that orbits Earth and Hydor isn’t thrilling, but it pays well. And once my month-long shift is over? I get a month of paid vacation. I work, then I travel. Repeat. I had just one more day to go, and then I’d be shuttled back to Earth and ready to go on my next adventure... -
![A Darkside Interlude (Darkstar Mercenaries .5) by Anna Carven]()
A Darkside Interlude (Darkstar Mercenaries .5) by Anna Carven
Rated: 4.17 of 5 stars · 16 ratingsCommander Iskar Gar-Kurai isn't impressed by humans or their backwater planet. If he had his way, he'd be working closer to home, on a planet where it wasn't so infernally hot . .. But orders are orders, especially when they come from the very top. If he's going to be on Earth for the long term, Iskar needs to learn more about its strange inhabitants... -
![Finn by Anna Hackett]()
Finn by Anna Hackett
Rated: 4.22 of 5 stars · 12 ratingsIn the aftermath of a deadly alien invasion, a band of survivors fights on…. For Hawk pilot Finn Erickson, flying is in the blood. Since the aliens decimated the planet, he spends most of his time flying Hell Squad into combat. With communication to other survivor bases cut off, he has no idea if his family is still alive and feels their loss keenly...Categorized as:
aliens independent heroine m-f futuristic military science fiction dystopian length-novella -
![Dark Minds by Michelle Diener]()
Dark Minds by Michelle Diener
The mind is the most powerful weapon of all . . . Imogen Peters knows she's a pawn. She's been abducted from Earth, held prisoner, and abducted again. So when she gets a chance at freedom, she takes it with both hands, not realizing that doing so will turn her from pawn to kingmaker...Categorized as:
aliens competent heroine m-f multicultural science fiction futuristic dual-pov non-human-hero -
![7SEEDS 3 by Yumi Tamura, 田村由美]()
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![Chaos by Laurie Roma]()
Chaos by Laurie Roma
Rated: 4.24 of 5 stars · 10 ratingsKatra Tesera is a female Dragon Warrior on a mission. Unsatisfied with the life her family wishes for her back on her home world, she seeks something more for her own future. When the opportunity to visit Earth arises, Katra is eager for the excitement and adventure of traveling the stars...Categorized as:
aliens independent heroine m-f shapeshifters science fiction magic futuristic length-medium -
![Warrior Rescued by Stephanie West]()
Warrior Rescued by Stephanie West
Elena had no clue aliens existed before she awoke to discover her abductors had crashed while trying to colonize a new world. For two long years she’d been struggling on the baked and barren hellish planet, forced to survive all alone. The only thing that keeps her going is watching over her fellow humans, still in stasis and blissfully unaware of the nightmare all around...Categorized as:
aliens strong heroine suspense science fiction military alpha male futuristic length-medium -
![Taming Ryock by Sara Page, Sean Moriarty]()
Taming Ryock by Sara Page, Sean Moriarty
My life has become a living nightmare…. Abducted. Stolen from Earth. I wake up in a strange alien laboratory to discover my new alien overlords plan to use me in a breeding experiment. The alien they want me to breed with? Yeah, he’s blue, he’s mean, and he’s packing some seriously scary alien ‘equipment’. There’s no way I can survive the experiment... -
![Cavas by Laurann Dohner]()
Cavas by Laurann Dohner
Career military man Cavas Vellar has joined his older brother, Cathian, aboard The Vorge for one purpose—to rescue their youngest littermate. Their father has resorted to having him kidnapped to hide one of his most vile secrets. They need to go down onto a planet full of criminals, find Crath, and rescue him. This mission is the most important one Cavas has ever led... -
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![Romancing the Alpha: An Action-Adventure Romance Boxed Set by Zoe York, Ruby Lionsdrake]()
Romancing the Alpha: An Action-Adventure Romance Boxed Set by Zoe York, Ruby Lionsdrake
Rated: 4.25 of 5 stars · 8 ratingsA multi-author anthology of action-packed adventure novellas. Let the adrenaline flow! ***ZOE YORK, RUBY LIONSDRAKE, ZARA KEANE, ANNA HACKETT, EMBER CASEY, ANNA LOWE, SADIE HALLER, LYN BRITTAN, LYDIA ROWAN, A. J. VALE, LEIGH JAMES***. -
![Kol: Alien Abduction Romance by Vi Voxley]()
Kol: Alien Abduction Romance by Vi Voxley
Rated: 4.25 of 5 stars · 8 ratingsForever is no time at all, sometimes. Jackie Hooper is all out of time. An incurable illness at her side, she's trying to make the best of the opportunities she has left. Getting abducted by a Nayanor warlord was not on that list of things to do. But then again, spending your last moments with the hottest man in the universe can't be all bad. . -
![Last Ship Off Polaris-G by Carol Van Natta]()
Last Ship Off Polaris-G by Carol Van Natta
When 4,000 colonists are stranded on a dying planet, two ex-lovers and an ancient freighter are their only hope for survival. Independent trader Gavril Danilovich is trapped on Polaris-G, a frontier planet in the midst of an ecological disaster. The galactic military is blockading the system to contain the mysteriously virulent blight. The planetary government impounded his ship... -
![Banic by Mina Carter]()
Banic by Mina Carter
She’s a doc on a mission. He’s a beast with a heart of gold. Dr. Beth Godwin arrives on Parac’Norr with one goal in curing the Blood Rage mutation that plagues the alien warriors. But she didn’t expect Banic, the most feared feral on the planet, or her reaction to him. A caged monster, she knows she should stay away from him... -
![Crossing Quinn by Gail Koger]()
Crossing Quinn by Gail Koger
Rated: 4.33 of 5 stars · 6 ratingsQuinn Jones is a formidable Coletti warlord. His mission is to capture Xenia and bring her back to Tanith to be mated with a warrior the Overlord has chosen. Problem is, Quinn finds himself falling for the beautiful Farin. Her unusual “psychic powers, combat training and berserker abilities” make her the perfect mate for him... -
![Hothar's Folly by Gail Koger]()
Hothar's Folly by Gail Koger
Rated: 4.33 of 5 stars · 6 ratingsUndercover psychic investigator Casey Jones’ hunt for a traitor in Central Command gets blown all to hell when the crew of the military C130 cargo plane she's riding on tries to kill her. Drawing on her telekinesis, Casey stops their assassination attempt and bails out as the aircraft goes down in flames...
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