Border Worlds Saga

by Mark Alders

3.17 · 31 ratings

aliens · queer · science fiction · m-m · futuristic · erotica · length-novella · explicit-open-door · anal sex · height-difference · length-short · breeding · first-in-series · military · standalone-first · insta-love

Border Worlds Saga: Similar series

Calluvia's Royalty

by Alessandra Hazard

4.07 · 415 ratings

m-m · science fiction · queer · royalty · futuristic · aliens · explicit-open-door · anal sex · erotica · age difference · third-person-pov · political-intrigue · alpha male · height-difference · forbidden love · from hate to love · length-medium · dual-pov · virgin hero · angst

All books in this series ❯

Pykh

by Eileen Glass

4.03 · 262 ratings

slavery · death · switch · age difference · aliens · humor · futuristic · male-pov · animal-death · alpha male · poly · audiobook · found-family · menage · early-20s-mmc · m-m-m · abuse · science fiction · queer · height-difference

All books in this series ❯

Dark Space

by Lisa Henry

4.12 · 186 ratings

hurt-comfort · futuristic · m-m · queer · science fiction · mental-trauma · past-sexual-abuse · caretaking · past-abuse · military · first-person-pov · bdsm · anal sex · suicide · sweet-hero · class difference · tortured hero · angst · dystopian · death

All books in this series ❯

Claimings

by Lyn Gala

4.08 · 254 ratings

science fiction · queer · m-m · aliens · hurt-comfort · third-person-pov · bdsm · military · explicit-open-door · age difference · futuristic · length-short · multicultural · audiobook · caretaking · past-abuse · non-human-hero · dual-pov · erotica · height-difference

All books in this series ❯

Ruth & Gron

by V.C. Lancaster

3.69 · 186 ratings

science fiction · erotica · aliens · futuristic · non-human-hero · sweet-hero · explicit-open-door · virgin hero · height-difference · m-f · alpha male · possessive hero · insta-love · abduction · cliffhanger · length-novella · contemporary · strong heroine · length-short · creative-anatomy

All books in this series ❯

Dragon Men

by Amber Kell

3.81 · 86 ratings

length-novella · queer · m-m · fated-mates · contemporary · shapeshifters · paranormal · aliens · fantasy · futuristic · bdsm · erotica · royalty · science fiction · first-in-series · magic · poly · standalone-first · behind-doors · menage

All books in this series ❯

The Harvest

by M.A. Church

3.72 · 63 ratings

aliens · science fiction · queer · m-m · non-human-hero · futuristic · sweet-hero · height-difference · bdsm · first-person-pov · bondage · caretaking · primal-play · length-medium · humor · anal sex · omegaverse · possessive hero · breeding · men in uniform

All books in this series ❯

Planetary Submissives

by Amber Kell

3.62 · 58 ratings

m-m · erotica · length-novella · magic · bdsm · queer · aliens · futuristic · anal sex · contemporary · first-in-series · slavery · standalone-first · paranormal · science fiction · fantasy · military · alpha male · angst · royalty

All books in this series ❯

Alien Clutch

by D. Dove

3.80 · 53 ratings

futuristic · breeding · aliens · dark · bondage · m-m · science fiction · queer · m-m-m · third-person-pov · poly · male-pov · praise-kink · non-trad-hea · anal sex · rape-mc · bdsm · fetish · rape · creative-anatomy

All books in this series ❯

Katzman

by Stormy Glenn

3.61 · 64 ratings

m-m · queer · erotica · contemporary · futuristic · aliens · length-novella · length-short · science fiction · fantasy · paranormal · slavery · shapeshifters · royalty · pregnancy · menage · standalone-first · first-in-series

All books in this series ❯

Border Worlds Saga

by Mark Alders

3.17 · 31 ratings

All books in this series ❯

Triad

by Kate Pearce

3.84 · 58 ratings

bisexual · audiobook · erotica · science fiction · length-novella · m-m-f · futuristic · aliens · explicit-open-door · menage · queer · military · poly · m-f · anal sex · men in uniform · multicultural · tortured hero · vikings · europe

All books in this series ❯

Phanta City

by Lynn Hagen

3.76 · 39 ratings

paranormal · erotica · m-m · shapeshifters · fantasy · queer · vampires · werewolves · length-novella · contemporary · futuristic · science fiction · fated-mates · fae · dystopian · dark · demons · bdsm · first-in-series · standalone-first

All books in this series ❯

Creations

by Marie Harte

3.67 · 30 ratings

bdsm · erotica · futuristic · aliens · science fiction · length-novella · menage · m-f · m-m · queer · length-medium · m-f-m · first-in-series · standalone-first · poly · queer-awakening

All books in this series ❯

Alien Lovers

by Olivia Black

3.90 · 29 ratings

m-m · queer · science fiction · aliens · length-novella · m-m-m · menage · poly · futuristic · erotica · first-in-series · breeding · new adult · virgin hero · harems · omegaverse · third-person-pov · insta-love · non-human-hero · standalone-first

All books in this series ❯

For A Chance At Us

by Toby Wise

3.86 · 18 ratings

multicultural · dual-pov · sweet-hero · new adult · height-difference · m-m · queer · science fiction · creative-anatomy · friends to lovers · explicit-open-door · non-human-hero · first-person-pov · anal sex · aliens · fantasy · length-novella · futuristic · pregnancy · slow burn

All books in this series ❯

Alien Slave Masters

by Samantha Cayto

3.97 · 30 ratings

m-m · queer · science fiction · erotica · futuristic · aliens · bdsm · length-novella · dark · suspense · m-m-m · dub-con · standalone-first · m-f · first-in-series · slavery · length-short · poly · rape · abuse

All books in this series ❯

Slave World

by Kelex

3.38 · 20 ratings

super rich hero · dual-pov · male-pov · multicultural · dub-con · creative-anatomy · dystopian · double-penetration · tortured hero · class difference · fetish · bdsm · bondage · cruel hero · non-human-hero · politician · working class hero · dark · mental-trauma · anal sex

All books in this series ❯

The Kithran Regenesis

by Dani Worth

3.55 · 20 ratings

m-m-f · erotica · poly · futuristic · bisexual · science fiction · menage · length-novella · aliens · pirates · reverse harem · m-m · m-m-m · queer · standalone-first · first-in-series · tortured heroine · non-human-heroine · m-f · length-short

All books in this series ❯

Felidae

by Jade Buchanan

3.61 · 18 ratings

erotica · length-novella · science fiction · futuristic · aliens · queer · m-m · menage · m-f · m-m-f · paranormal · first-in-series · poly · standalone-first · contemporary · shapeshifters · fantasy · bisexual

All books in this series ❯

Hojer - Inherent Gifts

by Alicia Cameron

4.00 · 18 ratings

erotica · m-m · queer · length-novella · futuristic · science fiction · length-medium · contemporary · paranormal · dub-con · standalone-first · first-in-series · hurt-comfort · length-long · bdsm · fantasy

All books in this series ❯

Star Cadets

by Jade Astor

3.00 · 4 ratings

science fiction · queer · length-novella · m-m · futuristic · erotica · first-in-series · aliens · young adult · standalone-first

All books in this series ❯

Harder

by Audrey Grace

3.33 · 3 ratings

futuristic · m-m · erotica · science fiction · queer · anal sex · aliens · length-novella · height-difference · first-in-series · standalone-first

All books in this series ❯

The Ageless

by Jaime Samms

3.00 · 3 ratings

erotica · queer · m-m · science fiction · length-novella · futuristic · length-short · first-in-series · fantasy · standalone-first · contemporary · paranormal

All books in this series ❯

© Copyright 2015-2023, Elektrolabs Limited · Advertising Disclosure: Please note that many links to retailers are affiliate links, which yields a commission for us. romance.io is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to amazon.com.

Remove ads