Sex Gates: Similar series
Clans of Kalquor
by Tracy St. John
3.96 · 196 ratings
romance · steamy · book · paranormal · futuristic · aliens · fiction · sci-fi · adult · reverse-harem · polyamory · space · alpha-mc · mlm · abuse · dystopia · action-adventure · space-opera · supernatural · dark
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The Kraken
by Tiffany Roberts
4.14 · 109 ratings
aliens · fiction · adult · sci-fi · romance · paranormal · book · steamy · monsters · action-adventure · futuristic · genetic-engineering · dystopia · suspense · alpha-mc · female-mc · friendship · slow-burn · multi-pov · friends-to-lovers
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Iriduan Test Subjects
by Susan Trombley
4.04 · 101 ratings
adult · sci-fi · aliens · fiction · book · steamy · romance · dark · monsters · futuristic · paranormal · space · action-adventure · genetic-engineering · myths · alpha-mc · kidnapping · new-adult · slow-burn · enemies-to-lovers
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Highland Wishes
by Jessi Gage
3.87 · 38 ratings
audiobook · time-travel · scotland · historical · adult · magic · sci-fi · paranormal · british-isles · united-kingdom · fiction · romance · europe · book · historical-fiction · medieval · steamy · supernatural · womens-fiction · violent-conflict
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Prison Planet
by Emmy Chandler
3.95 · 66 ratings
fiction · suspense · prison · romance · captivity · steamy · book · dark · sci-fi · adult · action-adventure · aliens · space · alpha-mc · paranormal · audiobook · dystopia · fighter · forced-proximity · futuristic
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Folsom Planet Blues
by Honey Phillips
4.34 · 36 ratings
invasion · romance · kidnapping · book · aliens · fiction · fated-mates · first-contact · adult · violent-conflict · sci-fi · kind-mc · alpha-mc · slavery · dark · steamy · paranormal · omegaverse · prison · insta-love
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Spirit Pass
by S.E. Smith
4.05 · 21 ratings
adult · historical · sci-fi · paranormal · western · action-adventure · aliens · fiction · steamy · book · industrial-era · time-travel · romance · alpha-mc · audiobook · new-adult · indigenous-mc · poc-mc · female-mc · warriors
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Mating Wars
by Aya Morningstar
3.90 · 41 ratings
genetic-engineering · adult · paranormal · aliens · fiction · book · romance · shapeshifters · forbidden-love · first-contact · violent-conflict · sci-fi · galactic-empire · action-adventure · invasion · dystopia · humor · steamy · fantasy · futuristic
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The Unclaimed Legacy
by M. Tefler
4.42 · 26 ratings
adult · polyamory · space-opera · sci-fi · fiction · harem · steamy · book · romance · action-adventure · space · litrpg · military · paranormal · romantic-love · pulp · psychics
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Champions of Terra
by Viola Grace
3.97 · 36 ratings
book · steamy · fiction · paranormal · sci-fi · adult · futuristic · romance · aliens · supernatural · space · space-travel · contemporary · shapeshifters · kidnapping · royalty · fae · domestic-drama · arranged-marriage · demons
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Mate for the Alien Master
by L.V. Lane
4.11 · 18 ratings
invasion · steamy · paranormal · humor · aliens · fiction · monsters · sexual-assault · first-contact · violent-conflict · adult · dark · romance · book · forced-proximity · female-mc · fantasy · alternate-universe · sci-fi · anthologies
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Alpha Elite
by V.T. Bonds
3.85 · 33 ratings
romance · steamy · book · paranormal · dystopia · omegaverse · fiction · action-adventure · adult · multiverse · dark · military · fated-mates · fantasy · shapeshifters · abuse · suspense · alpha-mc · sci-fi · gothic
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Love Slaves of the Alphas
by Shannon West
3.73 · 44 ratings
romance · shapeshifters · book · steamy · mlm · fiction · paranormal · adult · enemies-to-lovers · lgbtq · aliens · angst · supernatural · slavery · fantasy · sci-fi · dystopia · alpha-mc · box-set · futuristic
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Galactic Pirate Brides
by Tamsin Ley
4.16 · 27 ratings
sci-fi · adult · aliens · fiction · action-adventure · paranormal · first-contact · futuristic · female-mc · outlaws · genetic-engineering · book · romance · violent-conflict · suspense · alpha-mc · invasion · military · galactic-empire · steamy
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Immortal Coven
by Amara Rae
4.11 · 27 ratings
adult · witches-wizards · fiction · fantasy · paranormal · romance · book · steamy · horror · magic · female-mc · action-adventure · fated-mates · myths · forced-proximity · supernatural · grumpy-mc · demons · alternate-history · age-gap
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Barion
by Luna Voss
3.69 · 16 ratings
adult · romance · book · gothic · aliens · fiction · paranormal · omegaverse · sci-fi · organized-crime · steamy · crime · alpha-mc · fated-mates · futuristic · fantasy · dark
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Men of Mettle
by Cara Bristol
4.05 · 42 ratings
aliens · fiction · adult · sci-fi · romance · cyborgs · action-adventure · book · steamy · paranormal · futuristic · military · genetic-engineering · suspense · space · first-contact · domestic-drama · insta-love · audiobook · disability
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The Borders War
by S.A. McAuley
4.07 · 27 ratings
mlm · sci-fi · adult · military · lgbtq · book · romance · fiction · action-adventure · enemies-to-lovers · dystopia · violent-conflict · war · futuristic · alternate-universe · angst · steamy · mystery · epic · killer
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Coded for Love
by Lynne Silver
3.87 · 15 ratings
paranormal · adult · contemporary · military · book · steamy · romance · fiction · action-adventure · violent-conflict · war · fantasy · sci-fi · alpha-mc · futuristic · abuse · young adult · suspense · cheating · bdsm
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Owned
by Anitra Lynn McLeod
3.50 · 24 ratings
aliens · fiction · lgbtq · adult · sci-fi · mlm · book · steamy · romance · slavery · paranormal · bdsm · super-powered · age-gap · futuristic · dystopia · family · space-travel · space-opera · royalty
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Starlight Monsters
by Skye MacKinnon
4.22 · 9 ratings
romance · book · fiction · aliens · sci-fi · adult · fated-mates · captivity · steamy · humor · action-adventure · suspense · historical · alpha-mc · futuristic · dark · insta-love
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Equinox
by Lily Harlem
3.71 · 7 ratings
adult · polyamory · new-adult · sci-fi · aliens · fiction · book · reverse-harem · romance · contemporary · suspense · steamy · space-opera · paranormal · action-adventure · female-mc · harem · love-triangle
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Ecstasy
by Mackenzie McKade
3.40 · 5 ratings
fiction · steamy · adult · romance · futuristic · contemporary · sci-fi · paranormal · book · lgbtq · fantasy · bdsm · anthologies
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Marked
by Jennifer Leeland
3.50 · 4 ratings
sci-fi · adult · romance · book · steamy · fiction · wlw · paranormal · fantasy · polyamory · slavery · bisexuality · mlm · aliens
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