Erotic Romance: Science Fiction

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Zentara Mates: MM Alien Romance
Harry Davies thought the worst part of hiking the Oregon woods in December was the uphill trail to the cabin. His five gay friends all agree. It's cold, they're hungry, and it's margarita-o'cloc MORE...
Vipan’s Mission (MFMM)
[Siren Menage Everlasting: Erotic Romance, Romantic Suspense, Reverse Harem, Fantasy, Alien, Science Fiction, Contemporary, MFMM, HEA] Elite Warrior Vipan Cantik volunteers for a mission on another planet, a MORE...
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Anomalies (MM)
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On the planet of Kathtor, Midnight Creek is special. It houses a geo-spatial anomaly that crosses the distance between opposite sides of the planet with a single step. A hundred years ago, the warring Kimon use MORE...
There's Always A Catch (MM)
When Ryan gets an unexpected message from an old enemy, asking to see him, Mikos is outraged and forbids the meeting. Like most of Mikos’s orders, this one infuriates Ryan and makes him even more determin MORE...
Alien Awakened (MFM)
The Luyten menace has gone underground. Aurora Silvestre is the child of a human father and a TauCetean mother and until she succumbed to her alien DNA, was blessed with superior strength, intelligence, and MORE...
The Heart of Ailonsileah (MM)
The heist: steal the Heart of Ailonsileah from a heavily fortified space station during a ball held by its wealthy and unscrupulous owner. Do not get distracted by the other expensive baubles on display, and de MORE...
Serendipity (MM)
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PrideHomer Iseoy is horrified to find that the new member of the crew of the Njord is a Vedrinan, their culture of sexual freedom in stark contrast to his own, very rigid beliefs. Iseoy’s ten MORE...
Fueled By Lust: Kyros and Nierius (MFM)
[Siren Menage Amour: Erotic Romance, Menage a Trois, Romantic Suspense, Science Fiction, MFM, HEA] Twins Kyros and Nierius Rusina meet their perfect female in a dream. When using an ancestral technique to ph MORE...
Dreaming Big (MFMM)
[Siren Menage Everlasting: Erotic Romance, Romantic Suspense, Reverse Harem, Science Fiction, Fantasy, MFMM, HEA] Famous supermodel, Rain Harmony is transported from Earth to another planet after being given MORE...
Big Balls and Brass Knuckles (MM)
A dedicated detective meets a rich inventor who wants to play cop. Even in the future, money can get you everything… Detective Brett Knucks is trying to find a killer. The last thing he needs is to be MORE...
Legend of Sulpa (MFMM)
[Siren Menage Everlasting: Erotic Romance, Romantic Suspense, Reverse Harem, Science Fiction/Fantasy, MFMM, HEA] Tamika Greenway is no stranger to verbal and physical abuse, but instead of confronting prejud MORE...
Beauty and His Forever (MM)
  [Siren Publishing: The Stormy Glenn ManLove Collection: Erotic Romance, Alternative, Science Fiction, Romantic Suspense, Fantasy, MM] Seer Jynx K'Vada was settling in to being prince of Saturn MORE...
And God Belched (MM)
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In this riotously funny romantic adventure, Randy and his younger brother Craig find themselves in a different universe, on a strange planet, desperately searching for Milo, a handsome stranger in imminent dang MORE...
Martial Law
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Mars has become a dangerous world. Too many have been lost; decisive action must be taken. NASA faces a difficult choice. Leave Mars alone or risk more lives to figure out why so many crew have gone missi MORE...
The Secret Language of Flowers
Comhghall Harrington is a bookseller who is infatuated with his regular customer, Lady Laure Charmante. Due to their radically different social stations as well as Laure’s marital status, Comhghall and La MORE...
Amongst the Stars (MFMM)
[Siren Menage Everlasting: Erotic Romance, Menage, Romantic Suspense, Futuristic, Science Fiction/Fantasy, Aliens, Reverse Harem, MFMM, HEA] Elysia Duncan is carried away from her hometown in California afte MORE...
Invasion of the Butt Snatchers (MMM)
The aliens settled in Africa and Europe, what with their love of giraffes and Alpine skiing and all, and forced the previous inhabitants to move out. But when two of said inhabitants meet one of said aliens, pl MORE...
Cosmic (MMF)
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Can three hearts break harder than two? While on a mission, the last thing the crew of the Sovereignty expects is to gain an addition crew-member, but when an unknown assailant attacks, Axel has no choice bu MORE...
Bred by Her Alien Abductor (MF)
Ella spends her days studying rocks. It's not glamorous work, and her funding is next to nothing, but she hopes to prove life exists beyond Earth. What she doesn't count on is being used as a breeding v MORE...
Dark (MF)
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For Princess Veracity, it was love at first sight. Unfortunately, Dark has never given her any indication that he returns her affection. Even more unfortunately, she's betrothed to marry a man she's qui MORE...
Love in Chaos (MF)
After the world’s population is nearly wiped out, Maggie has been able to protect herself—until now. Captured in the dead of night, she is offered to a man. A leader. Only this man isn’t a str MORE...
The Drunk Monkeys Collection, Volume 2 (MFM)
[Siren Menage Everlasting: Erotic Romance, Futuristic, Sci-Fi,  Menage a Trois, Sex Toys, MFM, HEA] Grease Monkey Riots? Plague? Armageddon? Child’s play for…the Drunk Monkeys. Dolce MORE...
Soft Gold (MMF)
Three hearts can equal one great love... Hera, the goddess of mothering and childbirth, wants more than to be Zeus’s throwaway partner. She wants a lover and a hot romance she can call her own, but she MORE...
Xandore's Naughty Princess (MF)
The planet is counting on Princess Ellegra and Prince Xandore. Their union will assure Procalus is welcomed into the Planetary Alliance. Princess Ellegra is smart and beautiful and won’t take no for an MORE...
The Owned Collection, Volume 2 (MM)
[Siren Everlasting Classic ManLove: Erotic Romance, Alternative, Sci-Fi, BDSM, Public Exhibition, Spanking, Sex Toys MM, HEA] In Bound by Defiance, Alexis Bedlam has been chosen. Selected by the annual lotte MORE...
The Owned Collection, Volume 1 (MM)
[Siren Everlasting Classic ManLove: Erotic Romance, Alternative, Sci-Fi, BDSM, MM, HEA] In Bound by Pleasure, only pleasure could destroy his pain… When an alien race saves humanity in exchange for a MORE...
Claiming Mia (MF)
[Siren Classic BDSM: Erotic Romance, Contemporary, Science Fiction, BDSM, MF, HEA] Mia Ember is suffocating in her life. She has a good job and provides well for herself, but her personal life is a mess. She MORE...
1100 titles in Erotic Romance: Science Fiction