Books like 'Citadel'
Readers who enjoyed Citadel by Claire Kent also liked the following books featuring the same tropes, story themes, relationship dynamics and character types.
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Tane by Anna Hackett
Rated: 4.71 of 5 stars · 17 ratingsAs the battle against the invading aliens reaches its endgame, a group of bad boy bikers and mercenaries will stand and fight for humanity’s survival…Tane Rahia is good at one thing—fighting. Before the alien invasion, he fought as a mercenary in the worst jungle hellholes...Categorized as:
dystopian military independent heroine new adult abduction m-f aliens science fiction -
![A Home for the Alien Warrior by Honey Phillips, Bex McLynn]()
A Home for the Alien Warrior by Honey Phillips, Bex McLynn
Can a lonely alien warrior find the family he’s always wanted?When tragedy shatters Claire’s world, she abandons her corporate job and retreats to a remote mountain town. Just when she finally begins to rebuild her life, she is abducted by alien slavers.Unable to escape the scientist who purchases her, she devotes herself to the young alien twins who are also trapped by his twisted experiments...Categorized as:
abduction forced proximity insta-love competent heroine possessive hero m-f science fiction aliens -
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![Trial and Temptation by Ruby Lionsdrake]()
Trial and Temptation by Ruby Lionsdrake
After ten years of flying freighter ships from planet to planet, Val Calendula never thought she would apply for a job as a combat pilot in a mercenary outfit. But her brother has gotten himself into financial trouble, and he’s heading to a mining prison if Val can’t pay off his debts. Mercenaries don’t always live long... but they make good money while they’re alive... -
![Peripeteia by Sarah Lyons Fleming]()
Peripeteia by Sarah Lyons Fleming
Book two of The City Series is here! Months into the apocalypse, the zombies show no signs of dying, but it’s clear everyone in Sunset Park will die without enough food to outlast the undead. Add in the less-than-sociable new neighbors only blocks away, and the hunt for sustenance has come to feel more like a race than a ramble...Categorized as:
dystopian new adult angst suspense m-f caretaking friends to lovers forced proximity -
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![Olivia and the Orc by Honey Phillips]()
Olivia and the Orc by Honey Phillips
An orc guard. A kidnapped human. A treacherous journey…The last thing Olivia remembers is celebrating a friend’s birthday. The next thing she knows, she and her friends are being marched across an alien desert by a gang of small lizardmen - and one very large and forbidding green alien... -
![Victoria's Challenge by M.K. Eidem]()
Victoria's Challenge by M.K. Eidem
Rated: 4.28 of 5 stars · 28 ratingsVictoria Lynn Chamberlain… at two, she was abducted by an alien race, the Regulians… at nine, her world literally explodes when the Regulians returned, destroying Earth. She and her Aunt are the only survivors thanks to another alien race, the Carinians. Now she’s eighteen, a new graduate from their top medical school, and is ready to claim her life mate...Categorized as:
military abduction age difference insta-love virgin heroine competent heroine m-f science fiction -
![Gracie's Touch by S.E. Smith]()
Gracie's Touch by S.E. Smith
Gracie Jones was little more than a child when the Earth was invaded by an alien species. Escaping into the subway tunnels of New York City, she hid in fear of being captured. Discovered by four men who became her protectors, she fought alongside them and they became known as the Freedom Five...Categorized as:
insta-love military virgin heroine possessive hero m-f science fiction pregnancy alpha male -
![Hunted by the Alien Berserker by Mina Carter]()
Hunted by the Alien Berserker by Mina Carter
She’s a pilot, not a people person. What does she know about keeping a bunch of women alive on an alien planet?Even worse, said planet has alien cavemen intent on carrying them off to their lairs to… do whatever it is alien cavemen DO to their captives. Yeah, that doesn’t take a genius to figure out...Categorized as:
military forced proximity m-f age difference abduction competent heroine possessive hero aliens -
![Unrest by Wendy Higgins]()
Unrest by Wendy Higgins
Rated: 4.37 of 5 stars · 15 ratingsNew York Times bestselling author Wendy Higgins brings you the second book in this thrilling apocalyptic world... Being on the run in the desert means food and sanctuary are hard to come by, but Amber Tate and her crew are not about to give up. Not after having the things they love brutally ripped from them by an unknown enemy who sent their world into the apocalypse... -
![Going Ballistic by Dorothy Grant]()
Going Ballistic by Dorothy Grant
Rated: 4.63 of 5 stars · 8 ratingsWhen her plane tries to come apart at apogee during a hijack, ballistic airline pilot Michelle Lauden handles the worst day she could imagine. After getting down without losing any passengers or crew, though, she finds her troubles have just begun!The country she's landed in has just declared independence from the Federation... -
![Holmes by Anna Hackett]()
Holmes by Anna Hackett
Rated: 4.36 of 5 stars · 14 ratingsThe battle of survival against the invading aliens heats up…but Hell Squad never quits. General Adam Holmes’ life is dedicated to keeping his small band of survivors alive. On the run, with only Hell Squad and the other soldiers for protection, they are making their last dangerous drive to the secret stronghold of the Enclave... -
![Hunted by Lisa Harris]()
Hunted by Lisa Harris
Rated: 4.43 of 5 stars · 11 ratingsHe promised to protect her.But what happens when the hunter becomes the prey?Welcome to Shadow Ridge, where LONGMIRE meets JERICHO.From USA Today Best-selling author Lisa Harris comes an epic series where the survival of Shadow Ridge depends on learning how to fight crime all over again...Categorized as:
dystopian suspense new adult christian contemporary science fiction futuristic length-short -
![Alien Castaway by Honey Phillips]()
Alien Castaway by Honey Phillips
Can a runaway bride and an escaped alien prisoner find sanctuary together?Darla’s life changed forever the day the aliens invaded Earth. Her worthless father and shiftless brother have used the presence of the Yehrin as an excuse to keep her under their control. Their latest scheme? Marry her off to one of their equally disgusting cronies as part of a business arrangement...Categorized as:
virgin heroine m-f height-difference caretaking forced proximity insta-love survival plain heroine -
![Fighting Captivity by R.K. Munin]()
Fighting Captivity by R.K. Munin
Born deaf, Zia Higgs never let that stop her from going after what she wants. After growing up poverty-stricken on the human colony of Wimol, she found a high-paying job with a scrap trawler that allows her to send money home and also save for new implants...Categorized as:
forced proximity suspense angst height-difference caretaking friends to lovers insta-love military -
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![Fractured Stars by Lindsay Buroker]()
Fractured Stars by Lindsay Buroker
McCall Richter finds criminals, con men, and deadbeats better than anyone else in the empire. She’s proud of her success and that she owns her own spaceship, especially since she struggles to understand human motivations, can’t tell when people are lying to her, and is horrible at recognizing faces... -
![The McClane Apocalypse Book Ten by Kate Morris]()
The McClane Apocalypse Book Ten by Kate Morris
Rated: 4.67 of 5 stars · 6 ratingsAs the McClane saga continues, the family realizes that someone in their trusted, inner circle may just be the person who has leaked precious information about them, Fort Knox, and their community allies to the men who were running the highwaymen and ultimately to whoever they were reporting... -
![Alien Incognito by Cara Bristol]()
Alien Incognito by Cara Bristol
Rated: 4.67 of 5 stars · 6 ratingsBeing saved from a slave ship and given life-saving medical attention by a tall, muscular furry alien with large curling horns is enough for Giselle Cartier to think she’s found a hero.Having him deliver her back into the clutches of the same traffickers shatters her trust and the belief that anything she’d felt was real...Categorized as:
forced proximity suspense abduction m-f second chances from hate to love aliens science fiction -
![The Explorer by Elin Peer]()
The Explorer by Elin Peer
Flirting with danger is Aubri’s idea of fun. Ever since we were children, I’ve known Aubri wasn’t like other females. She’s the daughter of Magni and Laura Aurelius, who raised her to be a fearless warrior. Men are blinded by Aubri’s beauty, charm, and social status. Yet, at twenty-seven, no one has succeeded in making her his wife... -
![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... -
![Krampus and the Crone by Honey Phillips]()
Krampus and the Crone by Honey Phillips
Can a horned alien warrior and an isolated woman grant two children their holiday wish for a family?Jaelle is lonely. Ostracized by the village, like her mother and grandmother before her, she poses as an old witch in order to eke out a meager living selling herbal remedies to people who don't want to admit they need her help... -
![Hitched to the Alien General by Mina Carter]()
Hitched to the Alien General by Mina Carter
Her perfect man is a big, scarred alien war hero. Pity he only see’s her as a warrior, not a woman... Kenna Reynolds loves life in the Imperial Court. The latharian culture fascinates her, and she values the friendships she’s made amongst the sentinel women, most bonded to Latharian males, and a few with babies on the way...Categorized as:
military suspense age difference height-difference m-f science fiction futuristic aliens -
![Roth by Anna Hackett]()
Roth by Anna Hackett
Rated: 4.21 of 5 stars · 15 ratingsIn the aftermath of a deadly alien invasion, a band of survivors fights on… Roth Masters is a protector to the bone. Driven by the losses of his past, he fights side-by-side with Hell Squad to protect the human survivors of the alien invasion. As leader of Squad Nine, he and his team are known for their perfect timing in a firefight... -
![Niko by Anna Hackett]()
Niko by Anna Hackett
Rated: 4.23 of 5 stars · 13 ratingsIn the aftermath of a deadly alien invasion, a band of survivors fights on… Mackenna Carides is tough, strong, and excellent at her job as second-in-command of Squad Nine. She often works side by side with Hell Squad on some of the toughest missions to fight back against the alien raptors. Now she’s helping the survivors of Blue Mountain Base settle into their new home at the Enclave... -
![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:
military independent heroine m-f aliens science fiction futuristic length-short audiobook -
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![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:
dystopian military independent heroine m-f aliens science fiction futuristic length-short -
![Chaos: Love After the Apocalypse by Imogen Keeper]()
Chaos: Love After the Apocalypse by Imogen Keeper
Before the apocalypse, we were strangers. Now our lives will forever be entwined.The gripping, intensely romantic sixth installment of award-winning author Imogen Keeper's wild ride After the Plague Series.There’s no law anymore and no justice.As power consolidates in post-apocalypse D.C. and Ben holds me captive in the mountains, chaos is the only rule.It’s calling to Yorke.It’s calling to me... -
![Kate and the Kraken by Honey Phillips]()
Kate and the Kraken by Honey Phillips
A rebellious alien prince. An overworked human female. A planet in crisis.Kate spends most of her time in her lab, and as much as she believes in her job, she occasionally longs for a break. Being captured by aliens isn’t exactly what she had in mind.Neither is being forced to abandon ship and almost drowning in an alien ocean...Categorized as:
competent heroine m-f abduction survival insta-love possessive hero virgin heroine forced proximity -
![Buried Flames by Kennedy Layne]()
Buried Flames by Kennedy Layne
Rated: 4.43 of 5 stars · 7 ratingsMason Sykes had served many years in the Marine Corps for his country. His loyalty and sacrifice had left him disfigured—inside and out. He didn’t harbor regrets, especially since he’d finally found the peace and quiet he’d always desired on a Nebraska farm. Brenna Helm was a country girl through and through, right down to her cowgirl boots... -
![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:
military m-f competent heroine futuristic science fiction tall-heroine length-short black-mc -
![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:
military dystopian independent heroine m-f futuristic aliens science fiction length-novella -
![The Tracker's Dilemma by Ruby Lionsdrake]()
The Tracker's Dilemma by Ruby Lionsdrake
Sergeant Heath “Tick” Hawthorn, the best tracker in Mandrake Company and the captain’s right-hand man, has been admiring microbiologist Lauren Keys from afar for months. Unfortunately, she’s dedicated to her science and doesn’t seem to have any interest in relationships. He’s not even sure she knows his name...Categorized as:
military new adult suspense competent heroine independent heroine m-f survival forced proximity -
![7SEEDS 1 by Yumi Tamura]()
7SEEDS 1 by Yumi Tamura
Rated: 4.09 of 5 stars · 17 ratingsScientists had predicted this disaster, and in response, the leaders of every country met to develop a plan for human survival before the meteor hit. The 7Seeds project was developed out of this meeting. Each country froze a number of young healthy people, which allowed them to survive the meteor... -
![Scorch Road by Toby Neal, Emily Kimelman]()
Scorch Road by Toby Neal, Emily Kimelman
Rated: 4.23 of 5 stars · 11 ratingsA new romantic action adventure for fans of romance thriller suspense and family romance series! One of six Italian brothers and a sister, JT Luciano is a widowed environmental biologist with a touch of the Sight who is preparing for an apocalyptic event he knows is coming... -
![Cruz by Anna Hackett]()
Cruz by Anna Hackett
Rated: 4.12 of 5 stars · 19 ratingsBattle-hardened soldier Cruz Ramos is running on empty. As second-in-command of the deadliest commando squad fighting the invading aliens, he doesn't know why he’s fighting anymore. He’s seen too much destruction, devastation, and far too much death. Still, every day he goes out to protect those humans left, and every day the growing numbness threatens to take over...Categorized as:
dystopian military independent heroine m-f aliens science fiction futuristic alpha male -
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![7SEEDS 3 by Yumi Tamura, 田村由美]()
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![Noah by Anna Hackett]()
Noah by Anna Hackett
Rated: 4.18 of 5 stars · 13 ratingsThe battle of survival against the invading aliens heats up…but Hell Squad never quits. Tech genius Noah Kim works day and night to keep the survivors at Blue Mountain Base with lights, power and hot water. He’s also working on a top secret project to help keep them safe. He’s tired, stressed and under pressure—and one woman adds to it all...Categorized as:
dystopian military independent heroine m-f futuristic aliens science fiction cold heroine -
![Bonded To The Alien Centurion by Mina Carter]()
Bonded To The Alien Centurion by Mina Carter
Behind ‘enemy lines’ the last thing she expects is a sexy alien warrior determined to make her his… When things screw up in diplomatic talks with the Lathar Dani Black finds herself lined up for the one thing every dyed in the wool soldier dreads… a diplomatic function... -
![Undone by Wendy Higgins]()
Undone by Wendy Higgins
Rated: 4.17 of 5 stars · 13 ratingsUSA Today and New York Times bestselling author, Wendy Higgins, brings you the gripping, sensual conclusion to her apocalyptic trilogy. Amber Tate never dreamed their heart-wrenching escape from the enemy’s attack would lead them to the most beautiful place she’s ever seen, marred by one ugly fact; it’s under enemy control...Categorized as:
dystopian military new adult suspense science fiction aliens futuristic length-medium -
![Gabe by Anna Hackett]()
Gabe by Anna Hackett
Rated: 4.12 of 5 stars · 17 ratingsFor a limited time, you can get the latest Phoenix Adventures novella, On a Cyborg Planet, free. Visit here to find out more > bit.ly/annahackettbooks (paste into your browser) Hell Squad soldier Gabe Jackson has lost everything that mattered, including his twin brother. Now he just wants to kill the invading aliens anyway he knows how…and he knows a lot of ways...Categorized as:
dystopian military independent heroine m-f aliens science fiction futuristic cold heroine -
![Shaw by Anna Hackett]()
Shaw by Anna Hackett
Rated: 4.14 of 5 stars · 14 ratingsIn the aftermath of a deadly alien invasion, a band of survivors fights on… Hell Squad sniper Shaw Baird is a man on a mission. His squad is his family and now the invading aliens have done the unforgivable…taken one of his team. Claudia Frost—soldier, friend, and all-round badass—is running on borrowed time...Categorized as:
dystopian military m-f futuristic aliens science fiction warrior-heroine length-short -
![Hidden Flames by Kennedy Layne]()
Hidden Flames by Kennedy Layne
Rated: 4.20 of 5 stars · 10 ratingsThere were a few things that got Owen Quade through his multiple combat tours. One was the dream of riding a custom motorcycle on a winding mountain road. The former Marine had finally managed to complete that goal, and along the way he’d gained his own bike shop and the mechanic to go with it. She was a rare beauty, and he wasn’t talking about his bike either...Categorized as:
dystopian military suspense science fiction futuristic bikers contemporary length-short -
![Ash by Anna Hackett]()
Ash by Anna Hackett
Rated: 4.22 of 5 stars · 9 ratingsIn the middle of an alien invasion, will the bad boy berserker catch the geeky tech genius? Computer genius Marin Mitchell is doing her part to help humanity survive the raptor invasion, working tirelessly to decrypt alien data. She spends her days working and drooling over a certain tattooed, biker berserker from Squad Three. But Marin knows the rules: geeks do not snag sexy bad boys... -
![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... -
![Partners - Book One by Melissa Good]()
Partners - Book One by Melissa Good
Rated: 4.25 of 5 stars · 8 ratingsAfter a massive volcanic eruption puts earth into nuclear winter, the planet is cloaked in clouds and no sun penetrates. Seas cover most of the land areas except high elevations which exist as islands where the remaining humans have learned to make do with much less. People survive on what they can take from the sea and with foodstuffs supplemented from an orbiting set of space stations...Categorized as:
dystopian military age difference science fiction f-f futuristic post-apocalyptic queer -
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![Venomous Heart by Mary Auclair]()
Venomous Heart by Mary Auclair
Rated: 4.29 of 5 stars · 7 ratingsAfter drowning his soul in blood, can this alien warrior be saved? As the only doctor on Aveyn, Ava works day and night for the people she considers hers. Only… she’s not really one of them, is she? She’s a hybrid, a highly illegal creature created by Trade Minister Knut for his personal enjoyment... -
![Fiasco by Constance Fay]()
Fiasco by Constance Fay
Cynbelline Khaw is a woman of many names. She’s Generosity, a cultist who never quite fit in. She’s Bella, the daughter who failed to save her cousin’s life. And then there’s Cyn, the notorious bounty hunter who spaced a ship of slavers. She’s exhausted, lonely, and on her very last legs—but then a new client offers her a job she can’t refuse: a bounty on the kidnapper who killed her cousin... -
![Provoking Odium by Cynthia Sax, Amanda Kelsey]()
Provoking Odium by Cynthia Sax, Amanda Kelsey
Rated: 4.40 of 5 stars · 5 ratingsA Beautiful CyborgWhile accompanying his leader on a mission, Odium, an E Model cyborg, hears a distress call over the communication lines. The voice on that message makes his circuits surge with energy and all his systems light up. He has to respond to the mysterious female, would risk his lifespan and the lifespans of everyone on board their ship to protect her...Categorized as:
military suspense insta-love science fiction futuristic alpha male aliens length-short -
![Safe by Imogen Keeper]()
Safe by Imogen Keeper
The addictive fourth installment of author Imogen Keeper's wild ride After the Plague Series. Frankie and Yorke are trapped in a post-apocalyptic pot, the flame's on high, and they're a breath away from boiling over.For months, we fought to get out of the city, away from the gun collectors and kidnappers at the White House... -
![State of Pursuit by Summer Lane]()
State of Pursuit by Summer Lane
Rated: 4.14 of 5 stars · 11 ratingsABSOLUTELY HEART-STOPPING!" - Leti Del Mar, author of Land of the Unaltered "[Summer Lane] IS QUITE A TALENTED WRITER WITH AN AMAZING GIFT FOR NARRATION." - Janice White, Editor & Author of Clarity: A Text on Writing Cassidy Hart is alone. Her Commander and the love of her life, Chris Young, has gone missing in action... -
![Alien Fighter's Baby (Captured Science Fiction Romance) by Kat Emm]()
Alien Fighter's Baby (Captured Science Fiction Romance) by Kat Emm
Rated: 4.15 of 5 stars · 10 ratingsThey are from different worlds, and he put his life on the line, and risks everything to save her. Captured Alpha-Force Trooper Lt. Bran Hayes and a young civilian woman named Starling are forced together, while seven-foot enemy aliens demanded they mate...
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