Books like 'The Citadel'
Readers who enjoyed The Citadel by Kyle Stone also liked the following books featuring the same tropes, story themes, relationship dynamics and character types.
futuristic sc-fi romance action / adventure steamy mlm lgbtq aliens slavery dark
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Lor by Lily Mayne
Rated: 4.38 of 5 stars · 16 ratingsMy role as Moric—ruler of a small and prosperous fiefdom in a quiet corner of the world—has always been painfully dull and stifling.Until a beautiful, otherworldly creature with pink skin and a mane of golden hair falls through a strange void that has appeared in my guestroom.And I am instantly captivated by him.I have never seen anything like him... -
![Radiant Darkness by Anna Carven]()
Radiant Darkness by Anna Carven
Rated: 4.45 of 5 stars · 11 ratingsArkan Kythelian is the last man standing.He's well aware of that fact. The rest of his First Division brothers have succumbed to the Mating Fever, falling for those gentle, alluring creatures—humans.He should probably be more bothered by it, but he's a little preoccupied right now. See, he's just detected the presence of a group of terrified humans onboard a Kordolian slave-trader ship... -
![First Against the Wall by Manna Francis]()
First Against the Wall by Manna Francis
Rated: 4.58 of 5 stars · 17 ratingsWho is leading the rabble to victory? Toreth shifted against the wall, trying to get comfortable. Between bruises and handcuffs, he didn't have much success. On the first day, in the first cell, the lights had been on, the water dispenser working, and the prisoner feeding schedule still running. Then the lights went out, and things had gone steadily downhill from there... -
![Born to Be Mine by Lexa Luthor]()
Born to Be Mine by Lexa Luthor
Rated: 4.67 of 5 stars · 6 ratingsAn F/F Omegaverse Sci-Fi Romance Charlie never meant to trigger more than just new feelings between her and Kal! But now she faces an Alpha in full rut, while struggling to keep her promise and not allow Kal to mark her for life, which could send Kander into another civil war... -
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![Releasing Maladek by Victoria Aveline]()
Releasing Maladek by Victoria Aveline
Rated: 4.36 of 5 stars · 11 ratingsTurns out crash-landing into love is possible…Katie is content with her post-alien-abduction life. Not only has she found work as a royal attendant, but her current assignment on a galaxy cruise is enjoyable, too…until the ship is brought down by a malevolent species. Now she must rescue her friends and escape a hostile planet—all by herself... -
![Zercy by Kora Knight]()
Zercy by Kora Knight
Rated: 4.40 of 5 stars · 21 ratingsEmergency landing. Uncharted planet. Erotic captivity of epic proportions. Right when Captain Alec Hamlin thinks it can’t get any crazier, his team is sold to their captors’ mighty sovereign. King Zercy of the Kríe. Ruler of the planet’s most formidable species. Man, is he imposing. So regal and larger than life. And way too savagely handsome for Alec’s liking... -
![Control by Manna Francis]()
Control by Manna Francis
Rated: 4.37 of 5 stars · 21 ratingsPower Writes Its Own RulesGaining it, keeping it, or losing it, control is more than just a game--it's a critical tool for survival. No more so than in the Administration, where the Investigation and Interrogation Division's Val Toreth faces professional and personal hazards every day... -
![Demons Don't Duel by Hannah Walker]()
Demons Don't Duel by Hannah Walker
Rated: 4.50 of 5 stars · 6 ratingsDea's life is all about his role as a commander of a battlecruiser. At the height of his career, he can take command of any ship he wants, he's well respected, and surrounded by friends and family. Yet, something has been missing for a long time. Part of his soul was left behind at the academy, with someone he walked away from all those years ago. Uri loves control... -
![The Suicide King Volume 1 by Quil Carter]()
The Suicide King Volume 1 by Quil Carter
Rated: 4.55 of 5 stars · 13 ratingsAfter months of being separated, Reaver and Killian are finally together; but their happiness is short lived. Unbeknownst to Killian, Reaver is struggling with his own inner demons, demons that threaten to not only rip Reaver apart, but their entire relationship as well.Unfortunately though, it’s not only demons they have to worry about... -
![The Torid Affair by Laurann Dohner]()
The Torid Affair by Laurann Dohner
Rated: 4.43 of 5 stars · 17 ratingsWhen riots erupt on planet Torid, the crew of Defcon Red is tasked with quelling the violence and tending the injured. Even Alien Research Specialist Jessa Brick is pressed into service. Arguably more comfortable in her lab, the doctor is shocked at the obvious inequality on Torid... -
![Inversion Point by Jenn Burke, Kelly Jensen]()
Inversion Point by Jenn Burke, Kelly Jensen
Rated: 4.38 of 5 stars · 8 ratingsZander and Felix's relationship has been to the brink and back: the Human-Stin War, imprisonment and an actual death/resurrection. Zander's death, to be specific, and the experience has left him…changed. The mysterious race known as the Guardians chose to revive him and appointed him as their emissary... -
![The Rebel's Mate by C.W. Gray]()
The Rebel's Mate by C.W. Gray
Rated: 4.38 of 5 stars · 8 ratingsWelcome back to Charybdis Station and the crew of the Blue Solace: (Seventh Book in the series) Finn Sterling is still adjusting to becoming the lieutenant of the blue fleet of Charybdis Station. As an orphan on Cardinal Hold, he never imagined he would have a position of authority as an adult and the trust his friends put in him makes failure impossible... -
![The Captain's Mate by C.W. Gray]()
The Captain's Mate by C.W. Gray
Rated: 4.38 of 5 stars · 8 ratingsWelcome back to Charybdis Station and the crew of the Blue Solace: (Sixth Book in the series) Draif Ando started life as a slave on Vextonar. When he was fifteen, he met his best friend, Leti Ando, and life got a lot better. Now he's a Charybdis Station captain and works closely with the Lord Admiral of the Station... -
![Mary and the Minotaur by Honey Phillips]()
Mary and the Minotaur by Honey Phillips
Rated: 4.30 of 5 stars · 10 ratingsA grumpy, secretive alien. A sweet, not-as-naive-as-she-seems human. A nefarious plot.Although Mary has never had an easy life, she has always tried her best to maintain an optimistic outlook. But when she is abducted by aliens, it is difficult to find anything positive in the experience.When she is temporarily abandoned by her kidnappers, she hopes to escape their clutches forever... -
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![Cottonmouth by Naomi Lucas]()
Cottonmouth by Naomi Lucas
Rated: 4.30 of 5 stars · 10 ratingsEver since humans arrived, my world has changed. Tensions are high as we quarrel over territory, reforming our fractured clans.I will have none of it. I did not capture a bride.But then my world goes dark—and she appears.A female so lovely she possesses my mind, a bride who blushes every time she catches my eye.She is sweet.She is young.She is everything I am not.Except nothing is as it seems... -
![Deb and the Demon by Honey Phillips]()
Deb and the Demon by Honey Phillips
Rated: 4.32 of 5 stars · 22 ratingsAn alien prince. A pregnant slave. Deb is ripped away from her comfortable life on Earth and sold as a slave to a vicious alien. Six months later, all she has to live for is the child now growing inside her. Her child’s safety is worth any price, even submitting to the disturbingly attractive alien who has just purchased her. Rastrath hides a sharp mind behind a careless facade... -
![Breaking Jade by Quil Carter]()
Breaking Jade by Quil Carter
Rated: 4.53 of 5 stars · 12 ratingsSkyfall, the only city that King Silas spared when he started the Fallocaust. It is a safe haven from the radiation, and a place where there is plant life, electricity, protection; things never seen or felt in the lawless, savage greywastes.In Skyfall lives a teenager named Jade, born and raised in the 'slum district' Moros by an insane mother... -
![Risteard’s Unwilling Empress by S.E. Smith]()
Risteard’s Unwilling Empress by S.E. Smith
Rated: 4.21 of 5 stars · 14 ratingsRistéard Roald is the powerful and deadly ruler of Elpidios, a planet that is slowly dying without the blood stones needed to absorb the radiation gradually destroying its stratosphere. He has sworn to do whatever it takes to protect his world and his people, but time is running out.Hope comes from an unexpected source, the Kassis... -
![Quis Custodiet by Manna Francis]()
Quis Custodiet by Manna Francis
Rated: 4.40 of 5 stars · 14 ratingsWhere are all the good guys?No protests, no bombings, no subversion. Is it possible that in one part of the European Administration at least, almost all the citizens are happy with their lot in life? It seems unlikely... -
![Dax's Desire by Hannah Walker]()
Dax's Desire by Hannah Walker
Rated: 4.33 of 5 stars · 6 ratingsThe Avanti have made their way to Berinias, the capital and heart of Landran society. Not only is it King Kastain’s home ground, but it’s the seat of the Conclave's power. Dax finally gets to see Kastain in all his glory— regal, confident, powerful and downright sexy. As events unfold, Dax and Kastain realize everything happening with the Derin, with Martellon, Nestor and Teriva, is linked... -
![Clan and Command by Tracy St. John]()
Clan and Command by Tracy St. John
Rated: 4.33 of 5 stars · 6 ratingsLosing the one man he loved convinced Piras he would never have a chance at happiness. He is too different from the other members of the Dramok breed to attract a Nobek warrior and Imdiko nurturer to his clan. Unwilling to pretend to be someone he is not, he faces a lonely future. Nobek destroyer captain Kila’s one night with Piras was a shocking revelation... -
![Smoke & Cameras by Manna Francis]()
Smoke & Cameras by Manna Francis
Rated: 4.33 of 5 stars · 6 ratingsAnother short story in The Administration series... -
![The Whims of Gods: A Science Fantasy M/M Monster Romance by Mell R. Bright]()
The Whims of Gods: A Science Fantasy M/M Monster Romance by Mell R. Bright
Rated: 4.29 of 5 stars · 7 ratingsA Howl’s Moving Castle-inspired Science Fantasy M/M Monster Romance set in a post-apocalyptic world with giant monsters. Helios has a knack for survival. All he has ever known is the world after the Rise. He’s the product of a ruthless new era. Humanity has been brought down by the old gods that walk the Earth once again... -
![Clan and Conviction by Tracy St. John]()
Clan and Conviction by Tracy St. John
Rated: 4.25 of 5 stars · 8 ratingsThe drug Delir is sweeping the Kalquorian Empire, leaving madness and death in its wake. Investigator Dramok Gelan has already lost his enforcer partner in a deadly shootout because of the case. With no clues or suspects, he despairs of putting an end to the epidemic. Then a familiar face enters the picture: new partner and former lover Nobek Wynhod... -
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![Lonely Shore by Jenn Burke, Kelly Jensen]()
Lonely Shore by Jenn Burke, Kelly Jensen
Rated: 4.25 of 5 stars · 8 ratingsBook two of Chaos StationAll they can do is live day to day...Felix Ingesson has returned to his duties as the Chaos's engineer with Zander Anatolius, his ex-boyfriend-turned-broken-super-soldier, at his side. Hope means something again. But there's nothing Felix can do to battle the alien poison flowing through Zander's veins, or his imminent mental decline... -
![Tate's Torment by Hannah Walker]()
Tate's Torment by Hannah Walker
Rated: 4.25 of 5 stars · 8 ratingsWhen a rare day out goes disastrously wrong, the men have to fight for the survival of one of their own. Their actions spark an appearance by the Conclave, leaving the Avanti's future in the hands of those who choose to destroy them. Tate will give up everything to save his friends, even if it means losing Dariux and a love he never imagined he would find... -
![Hers To Command by Cynthia Sax]()
Hers To Command by Cynthia Sax
Rated: 4.20 of 5 stars · 10 ratingsThree Battered Hearts. One Perfect Love Ace and Thrasher share a special bond. They’ve never acknowledged that connection and have never fully acted on it. The Humanoid Alliance kill cyborg males like them, deeming the warriors to be defective. Now that Ace and Thrasher have escaped, they don’t trust the cyborg council and their brethren to react any differently... -
![Ignite by Nora Phoenix]()
Ignite by Nora Phoenix
Rated: 4.20 of 5 stars · 10 ratingsThe United States has split into three countries, and in the Conservative United States, being gay will get you sent to a reintegration camp. Tan has survived three years in camp, but he’s at the limit of what he can endure, even with the help of his best friend, Austin. When a massive meteor shower creates complete chaos at the camp, Austin and Tan see a chance to escape and they take it... -
![Journey's End by M.A. Church]()
Journey's End by M.A. Church
Rated: 4.17 of 5 stars · 12 ratingsAdapting is a word Dale Michaels has become familiar with. As he settles into his new life with the Tah’Narian starship captain Keyno, Dale has adapted to life with an alien, space travel, and having his body mutated so he can carry a young. He’s closed the chapter on his old life.Living on Tah’Nar, Dale has a loving mate and good friends. He’s helped cement peace with the Onfre... -
![King Cobra by Naomi Lucas]()
King Cobra by Naomi Lucas
Rated: 4.13 of 5 stars · 15 ratingsDaisy. Daisy. Daisy.From the moment her name is spoken, it is all I can hear. Her frightened tears bring me anger. I vow to wipe them off her face and banish her fear. To make her my queen.But I have to catch her first.I have to convince her to trust me.I have to show her she is safe.But only with ME.Because if any other naga male tries to take Daisy away from me, I will kill them... -
![The Alien's Escape by Ella Blake]()
The Alien's Escape by Ella Blake
Rated: 4.40 of 5 stars · 10 ratingsSo, I have the hots for my alien doctor. Jorok saved my life after being trapped in a filthy cell. He's gorgeous and way too serious for his own good. To get to know him better, I tag along on an errand, but we’re kidnapped and forced to nurse an alien captain’s sick crew. To avoid being sold, I pretend to be Jorok's mate (which isn't difficult). I thought things couldn’t get worse from there... -
![Beyond Happily Ever After: Blank Canvas by Kit Rocha]()
Beyond Happily Ever After: Blank Canvas by Kit Rocha
Rated: 4.32 of 5 stars · 12 ratingsCaution: this story is not meant to stand alone. The Beyond Happily Ever After stories are vignettes and outtakes showing the O'Kanes in their daily lives, in between the adventures and often after their happy endings. These stories were written exclusively for readers and fans of the series, and will probably not make very much sense to anyone not familiar with the characters... -
![Exiled by Evangeline Anderson]()
Exiled by Evangeline Anderson
Rated: 4.13 of 5 stars · 27 ratingsLissa is madly in love with Saber and it seems he returns her feelings but she has a problem. She and the man of her dreams both come from the same clan of the Touch Kindred. By the archaic laws of their people, they are too closely related to be bonded. Which means that even though there is no blood tie between them, they are doomed to remain apart... -
![Ticees by Shae Mills]()
Ticees by Shae Mills
Rated: 4.17 of 5 stars · 6 ratingsRipped from her world during a chance encounter with an alien landing party, Chelan MacKay suddenly finds herself on board the galactic battleship RIBUS 7. Korba, an ebony-clad god of war, the Iceanean Commander of RIBUS 7, is irresistibly drawn to her. Defying all the laws that govern his people, he risks all to make her his... -
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![Refuge by H.L. Day]()
Refuge by H.L. Day
Rated: 4.17 of 5 stars · 6 ratingsIf you no longer recognize someone, how can you possibly be expected to trust them with your life? Some might describe Blake Brannigan’s life in the small Yorkshire village of Thwaite as bordering on mundane. His job in a café doesn’t exactly set the world alight. But, he’s got his own house, a boyfriend, and a close-knit group of good friends... -
![Alien Outcast by Tracy St. John]()
Alien Outcast by Tracy St. John
Rated: 4.17 of 5 stars · 6 ratingsShe escaped to Kalquor to warn the empire…but did she bring its destruction instead? When a rogue Kalquorian raider snags a Bi’isil cruiser in Empire space, the outlaw crew is hoping for supplies. Instead, they find a Tragoom and an Earther woman with a dire warning: Bi’is is set to unleash a fatal plague on the Kalquorian Empire... -
![Fated to Fall by Stephanie West]()
Fated to Fall by Stephanie West
Rated: 4.17 of 5 stars · 6 ratingsBlaidd went slightly insane witnessing the small human being abused by her mate. He didn’t care that he was on a foreign planet, as he swiftly ended the vile male. All that mattered was soothing the heart rending pain that radiated from the trembling female. But despite Blaidd’s best intentions, nothing he did for Vivian went right... -
![The Last Woman by S.M. Shade]()
The Last Woman by S.M. Shade
Rated: 4.17 of 5 stars · 6 ratingsWhen Abby Bailey meets former model and actor, Airen Holder, in a darkened department store, romance is the last thing on her mind. A plague has decimated the population, leaving Abby to raise her son alone in a world without electricity, clean water, or medical care. Her only priority is survival... -
![Dark Warlord by Cynthia Sax]()
Dark Warlord by Cynthia Sax
Rated: 4.17 of 5 stars · 6 ratingsBattling the Barbarian...All Chamele Warlords have a destined mate, a gerel they are fated to spend their lifespans with. Batu, being genetically enhanced, believes he's the sole exception. He devotes himself to battle, is resigned to living a solitary life, dying with swords in both of his hands.Then he sees her.Genine is a warrior female intent on protecting her loved ones... -
![Ragnar by Vi Voxley]()
Ragnar by Vi Voxley
Rated: 4.17 of 5 stars · 6 ratingsWhen you take what you want, you can't let it slip away again. Selena Gordon is done with running, or so she hoped. Fleeing from an abusive relationship is a reality she has to face, but when it comes to the possibility of giving another man control over her, she's ready to stand her ground. No man, Nayanor or not, can make decisions for her ever again... -
![Frrar by Layla Nash, Juno Wells]()
Frrar by Layla Nash, Juno Wells
Rated: 4.17 of 5 stars · 6 ratingsHe's lost in the past.She's lost in the mission.When they're lost in space, will love find them?Maisy Cunningham was the youngest doctor to graduate from the Fleet Academy, but that doesn't stop the rest of the crew from treating her like a helpless little sister... -
![Smolder by Nora Phoenix]()
Smolder by Nora Phoenix
Rated: 4.17 of 5 stars · 6 ratingsIn a world where it’s every man for himself, all they can do is hold on to each other… A slow burn MMM survival romance. The second book in an exciting trilogy! Austin, Mack, and Tan have found a safe spot at the deserted farm... -
![Velvet Glove: Volume V by Sean Michael]()
Velvet Glove: Volume V by Sean Michael
Rated: 4.17 of 5 stars · 6 ratingsThe fifth installment of the Velvet Glove series about an exclusive men's BDSM club, features three works: Three to Heal, Rock Stars and Size Queens and Fits Like a Glove... -
![Pool School by Manna Francis]()
Pool School by Manna Francis
Rated: 4.17 of 5 stars · 6 ratingsAnother short story in The Administration series.The whole cast of characters go out for an evening of strip clubs. Warrick and Toreth decide to play a game of Strip Pool... -
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![Determine by Viola Grace]()
Determine by Viola Grace
Rated: 4.17 of 5 stars · 6 ratingsA teacher of etiquette and contract law with a fetish for Terran coffee meets a superhero who wants to get into her briefs.Hydrangea has been teaching contract law and other species etiquette in the Nyal Imperium for months. There is nothing to her life but marking, teaching and going for tea with friends... -
![Taken as His Pet by Sassa Daniels]()
Taken as His Pet by Sassa Daniels
Rated: 4.17 of 5 stars · 6 ratingsDesperate to escape the stifling confines of Earth's repressive society, Lucy Bainbridge has only one hope. She proposes a deal to a warrior of Taar-Breck, promising to serve as his pet in return for passage to his home planet, but when the huge, fiercely handsome alien immediately orders her to strip and kneel at his feet, Lucy wonders if she has gotten herself in way over her head... -
![Claimed for Their Use by Ivy Barrett]()
Claimed for Their Use by Ivy Barrett
Rated: 4.13 of 5 stars · 8 ratingsHeld captive by a brutal drug cartel and facing an uncertain fate, the last thing Jessica Saint Claud expects is to be rescued by two huge, fiercely handsome alien warriors, but the real shock comes when the two Ventori commanders make it clear that she now belongs to them. They will use their beautiful little human as thoroughly as they please, and she will submit or be punished... -
![Alien Commander by Sadie Carter]()
Alien Commander by Sadie Carter
Rated: 4.13 of 5 stars · 8 ratingsShe’s not searching for a mate, just a place to feel safe… Sophie came to Zerconia under false pretences. She doesn’t want a mate. She has crap judgement in men. And really, what does she need a man for? Mind-blowing orgasms? She’ll buy a vibrator. Someone to take care of any creepy-crawlies? She’ll get a really good bug spray... -
![Skip Trace by Jenn Burke, Kelly Jensen]()
Skip Trace by Jenn Burke, Kelly Jensen
Rated: 4.13 of 5 stars · 8 ratingsBook three of Chaos StationZander Anatolius has been revived from the fatal effects of the super-soldier program, but now he has to face his estranged family and tell a story few would believe. With his lover and the crew of the Chaos at his side, Zander returns home to a media frenzy, threats from the military and pressure to join the family business... -
![Demons Don't Dream by Hannah Walker]()
Demons Don't Dream by Hannah Walker
Rated: 4.13 of 5 stars · 8 ratingsBeing the Terran ambassador assigned to Kenistal, the Demon home world, is not a particularly easy posting. Caris Dealyn wants nothing more than to get this assignment done so he can continue searching for his missing Avanti friends...
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