The Universal Protectorate: Similar series
Wires and Nerve
by Marissa Meyer
4.09 · 186 ratings
young adult · dystopian · futuristic · magic · urban fantasy · werewolves · humor · fantasy · shapeshifters · legends & fairy tales · length-short · first-in-series · standalone-first · paranormal · length-medium · aliens · mystery · royalty · science fiction · steampunk
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Accidental Alien Brides
by January Bell
4.00 · 340 ratings
science fiction · ic-standalone · standalone · non-human-hero · military · audiobook · humor · aliens · standalone-first · dual-pov · explicit-open-door · possessive hero · first-person-pov · length-short · futuristic · forced proximity · arranged marriage · slow burn · strong heroine · monsters
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The Nahx Invasions
by Gabrielle S. Prendergast
3.99 · 74 ratings
young adult · length-long · science fiction · dystopian · aliens · standalone-first · first-in-series · survival · cliffhanger · strong heroine · historical · futuristic · war · queer
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The Survival Trilogy
by Morgan Rice
3.49 · 98 ratings
length-short · young adult · dystopian · science fiction · audiobook · first-in-series · futuristic · standalone-first · fantasy · suspense · paranormal · contemporary · magic
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Tinkered Stars
by Gail Carriger
4.30 · 119 ratings
science fiction · queer · audiobook · length-medium · m-m · young adult · found-family · aliens · standalone-first · rockstars · futuristic · behind-doors · first-in-series · height-difference · new adult · lgbtqia hate · creative-anatomy · abuse · racism · third-person-pov
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Hanger: Shikkounin
by Hirotaka Kisaragi
3.97 · 41 ratings
science fiction · m-m · length-short · dystopian · queer · first-in-series · standalone-first · glimpses-kisses · paranormal · open-door · fantasy
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My Alien Romance
by Magan Vernon
3.50 · 54 ratings
science fiction · contemporary · length-short · futuristic · aliens · first-in-series · urban fantasy · standalone-first · m-f · young adult · insta-love · high-school · paranormal · college · military · audiobook · new adult · fantasy
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Kobar Mates
by Ivy Barrett
3.91 · 65 ratings
science fiction · explicit-plentiful · length-medium · length-short · reverse harem · spanking · aliens · dark · menage · dub-con · poly · standalone-first · bdsm · m-f · breeding · dystopian · forbidden love · from hate to love · m-f-m · standalone
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Lost Planet
by K. Webster
3.96 · 111 ratings
science fiction · futuristic · aliens · standalone-first · standalone · length-short · m-f · explicit-open-door · non-human-hero · alpha male · dual-pov · survival · abduction · first-person-pov · insta-love · possessive hero · erotica · multicultural · strong heroine · length-novella
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Refuge
by Cynthia Sax
4.29 · 48 ratings
futuristic · science fiction · aliens · m-f · alpha male · possessive hero · non-human-hero · fighters · tortured heroine · military · strong heroine · length-short · fated-mates · standalone-first · erotica · war · virgin heroine · grovel · bodyguard-hero · cold hero
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Imperial Princes
by Mina Carter
3.65 · 38 ratings
futuristic · science fiction · length-short · aliens · first-in-series · rape · abuse · open-door · rape-mc · military · m-f · standalone-first · independent heroine · harems · working class heroine · sassy heroine · royalty · cold hero · suspense · explicit-open-door
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Interstellar Brides® Program: Primal Mates
by Grace Goodwin
4.38 · 28 ratings
curvy heroine · aliens · length-short · science fiction · explicit-open-door · non-human-hero · torture-mcs · warrior-heroine · war · possessive hero · dual-pov · standalone-first · tall-heroine · dangerous heroine · independent heroine · fated-mates · alpha male · m-f · found-family · caretaking
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Space Lords
by Michelle M. Pillow
4.19 · 36 ratings
audiobook · futuristic · aliens · science fiction · psychics · demons · length-short · pirates · non-human-hero · length-medium · first-in-series · standalone-first · shapeshifters · contemporary
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Trident Alliance Mail Order Brides
by Athena Storm
3.64 · 33 ratings
science fiction · paranormal · length-short · futuristic · fantasy · aliens · standalone-first · strong heroine · dual-pov · audiobook · m-f · first-in-series · class difference · outlaw-heroine · explicit-plentiful · commander · competent heroine · sweet-hero · alpha male · betrayal
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Fated Star Mates
by Kyla Quinn
3.70 · 33 ratings
aliens · science fiction · length-short · futuristic · humor · monsters · fated-mates · first-in-series · standalone-first · erotica · length-novella · pirates · explicit-open-door
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Alien Warlord's Conquest
by Vi Voxley
4.19 · 40 ratings
aliens · military · science fiction · futuristic · standalone-first · length-short · first-in-series · commander · standalone · m-f · length-novella
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At the Alien Hotel
by Kate Sinner
4.15 · 20 ratings
length-novella · aliens · humor · insta-love · fantasy · first-in-series · standalone-first · height-difference · science fiction · creative-anatomy · pirates · paranormal · explicit-open-door · dual-pov · found-family · m-f · new adult · possessive hero · monsters · abduction
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Diaspora Worlds
by Melisse Aires
3.43 · 33 ratings
futuristic · science fiction · aliens · length-novella · standalone-first · first-in-series · length-short · harems · bodyguard-hero · open-door · non-human-hero · erotica · m-f · forced proximity
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Genetically Modified
by Holly S. Roberts
4.07 · 30 ratings
audiobook · shapeshifters · paranormal · aliens · fantasy · dystopian · length-short · m-f · military · urban fantasy · found-family · first-in-series · standalone-first · strong heroine · demons · suspense · length-medium · science fiction · new adult · futuristic
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Gladiators of Krix
by Miranda Martin
4.14 · 29 ratings
science fiction · aliens · length-short · fantasy · fighters · humor · m-f · standalone-first · slavery · futuristic · menage · standalone · first-in-series · urban fantasy
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The Supers of Project 12
by Angel Lawson
4.00 · 23 ratings
reverse harem · fantasy · poly · superheroes · paranormal · standalone-first · length-short · futuristic · urban fantasy · first-in-series · science fiction · length-medium · suspense
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Runner's Moon
by Linda Mooney
3.82 · 22 ratings
science fiction · audiobook · futuristic · length-short · fantasy · aliens · first-in-series · standalone-first · m-f · contemporary · length-medium
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Her Alien Beast
by Starla Fleet
4.56 · 9 ratings
aliens · science fiction · strong heroine · military · standalone-first · alpha male · first-in-series · length-short · vengeance · paranormal · length-novella · m-f · dual-pov · monsters
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Books
by Maia Starr
4.00 · 15 ratings
first-in-series · standalone-first · futuristic · science fiction · length-epic · military · paranormal · shapeshifters · witches · fantasy · aliens · vampires · angels · suspense · demons · new adult · anthologies · humor · psychics
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