The Universal Protectorate
by Annabelle Rex
4.33 · 6 ratings
invasion · book · aliens · fiction · first-contact · violent-conflict · adult · bodyguard · romance · kidnapping · amnesia · female-mc · dark · sci-fi · paranormal · space
The Universal Protectorate: Similar series
Catteni
by Anne McCaffrey
3.96 · 124 ratings
sci-fi · space-travel · space-opera · female-author · first-contact · adult · violent-conflict · futuristic · aliens · fiction · action-adventure · audiobook · dystopia · space · invasion · romance · other-world · colonization · female-mc · survival
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House of Kaimar
by Miranda Bridges
4.13 · 112 ratings
aliens · fiction · action-adventure · female-mc · adult · violent-conflict · first-contact · dark · sci-fi · kidnapping · book · romance · contemporary · paranormal · steamy · invasion · alpha-mc · killer · fated-mates · insta-love
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Stolen by an Alien
by Amanda Milo
4.08 · 179 ratings
aliens · humor · sci-fi · steamy · fiction · adult · book · romance · paranormal · violent-conflict · first-contact · invasion · audiobook · space · alpha-mc · action-adventure · dark · kind-mc · kidnapping · friends-to-lovers
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Treasured by the Alien
by Honey Phillips
4.40 · 191 ratings
romance · sci-fi · adult · first-contact · aliens · fiction · book · paranormal · steamy · children · invasion · violent-conflict · alpha-mc · space · kidnapping · dark · fated-mates · futuristic · space-travel · insta-love
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Alien Lord's Captive Serial
by Mina Carter
3.92 · 63 ratings
sci-fi · adult · dark · military · futuristic · aliens · fiction · warriors · action-adventure · paranormal · space · alpha-mc · kidnapping · book · steamy · romance · violent-conflict · female-mc · inter-galactic · royalty
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Captured by Aliens
by A.G. Wilde
4.03 · 77 ratings
paranormal · action-adventure · aliens · fiction · female-mc · adult · first-contact · sci-fi · book · steamy · romance · dark · kidnapping · alpha-mc · galactic-empire · humor · poc-mc · slow-burn · violent-conflict · invasion
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The Alliance
by S.E. Smith
4.12 · 120 ratings
aliens · fiction · sci-fi · adult · romance · book · futuristic · action-adventure · military · post-apocalyptic · paranormal · audiobook · first-contact · violent-conflict · dystopia · warriors · space-travel · invasion · steamy · contemporary
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Riv’s Sanctuary
by A.G. Wilde
4.12 · 44 ratings
dark · sci-fi · adult · futuristic · poc-mc · female-mc · fiction · aliens · action-adventure · humor · paranormal · alpha-mc · space · romance · kidnapping · book · first-contact · violent-conflict · galactic-empire · audiobook
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Hearts of Stone
by Miranda Bridges
4.17 · 72 ratings
adult · dark · sci-fi · action-adventure · aliens · fiction · contemporary · paranormal · kidnapping · book · steamy · romance · violent-conflict · alpha-mc · first-contact · new-adult · female-mc · war · audiobook · royalty
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Raider Warlords of the Vandar
by Tana Stone
4.30 · 142 ratings
book · adult · sci-fi · aliens · fiction · galactic-empire · romance · steamy · first-contact · female-mc · action-adventure · space · invasion · violent-conflict · humor · paranormal · new-adult · alpha-mc · audiobook · fighter
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Dark World Mates
by Olivia Riley
3.97 · 60 ratings
aliens · fiction · adult · sci-fi · book · romance · action-adventure · female-mc · violent-conflict · first-contact · invasion · alpha-mc · slow-burn · military · space · suspense · paranormal · prison · monsters · space-opera
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Stolen Warriors
by Ella Maven
4.24 · 66 ratings
fiction · romance · book · sci-fi · adult · aliens · paranormal · steamy · galactic-empire · alpha-mc · invasion · kidnapping · dark · first-contact · violent-conflict · fated-mates · abuse · humor · revenge · monsters
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Sarazen Saga
by Isabel Wroth
4.15 · 52 ratings
aliens · fiction · paranormal · romance · book · shapeshifters · sci-fi · adult · fated-mates · contemporary · alpha-mc · invasion · first-contact · violent-conflict · space · steamy · kind-mc · insta-love · space-opera · children
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Roh'ilian Warrior
by Luna Kingsley
3.97 · 51 ratings
sci-fi · book · invasion · romance · paranormal · action-adventure · aliens · female-mc · fiction · violent-conflict · historical · adult · military · first-contact · kind-mc · kidnapping · dark · new-adult · abuse · alpha-mc
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First Salik War
by Jean Johnson
4.00 · 28 ratings
space-opera · invasion · romance · book · space · paranormal · female-mc · fiction · action-adventure · aliens · war · first-contact · military · magic · adult · violent-conflict · sci-fi · royalty · other-world · time-travel
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Folsom Planet Blues
by Honey Phillips
4.34 · 36 ratings
kidnapping · book · invasion · romance · sci-fi · adult · violent-conflict · first-contact · fated-mates · aliens · fiction · alpha-mc · kind-mc · dark · slavery · paranormal · steamy · omegaverse · prison · forced-proximity
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OtherWorldly Men
by Susan Grant
3.85 · 26 ratings
space-opera · female-mc · aliens · fiction · humor · futuristic · action-adventure · romance · book · first-contact · adult · alpha-mc · paranormal · sci-fi · invasion · contemporary · space · violent-conflict · assassins · political-intrigue
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The Ravager Chronicles
by Sara Page
3.86 · 42 ratings
sci-fi · adult · polyamory · aliens · fiction · paranormal · book · reverse-harem · steamy · romance · space-opera · action-adventure · poc-mc · space · military · fated-mates · royalty · space-travel · dark · demons
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Savage Warriors
by Jude Gray
4.00 · 44 ratings
audiobook · paranormal · romance · book · adult · sci-fi · aliens · fiction · female-mc · invasion · first-contact · violent-conflict · space-travel · action-adventure · steamy · dark · alpha-mc · galactic-empire · shapeshifters · kidnapping
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Sold to the Raksha
by Lizzy Bequin
4.15 · 20 ratings
book · steamy · polyamory · adult · first-contact · sci-fi · space-opera · female-mc · fiction · aliens · paranormal · romance · reverse-harem · gothic · kidnapping · dark · humor · space · law-enforcement · shapeshifters
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Warrior Clans of Maekon
by Jude Gray
4.06 · 18 ratings
female-mc · aliens · fiction · romance · book · steamy · first-contact · adult · paranormal · sci-fi · action-adventure · invasion · kidnapping · violent-conflict · alpha-mc · dark · space-travel · galactic-empire · psychics · barbarians
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Mate for the Alien Master
by L.V. Lane
4.11 · 18 ratings
paranormal · steamy · invasion · violent-conflict · adult · sexual-assault · first-contact · dark · humor · aliens · fiction · monsters · forced-proximity · book · romance · sci-fi · alternate-universe · female-mc · fantasy · space
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Warlords of Aegir
by Luna Hunter
3.93 · 15 ratings
violent-conflict · adult · military · first-contact · paranormal · sci-fi · action-adventure · humor · aliens · female-mc · fiction · book · shapeshifters · invasion · royalty · kidnapping · romance · dark
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Unexpected
by Layla Stone
4.06 · 18 ratings
book · romance · paranormal · futuristic · aliens · fiction · sci-fi · adult · invasion · colonization · action-adventure · space-opera · violent-conflict · first-contact · kidnapping · steamy · abuse · galactic-empire · genetic-engineering · poc-mc
All books in this series ❯