Ultimate Passage: Similar romance series

Kinsmen

by Ilona Andrews

4.17 · 124 ratings

space-opera · assassins · sci-fi · adult · magic · futuristic · action-adventure · fiction · female-mc · political-intrigue · paranormal · space · alpha-mc · audiobook · steamy · romance · urban-fantasy · drama · slow-burn · aliens

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Zion Warriors

by S.E. Smith

4.21 · 51 ratings

steamy · book · romance · sci-fi · adult · futuristic · aliens · fiction · paranormal · alpha-mc · cyborgs · audiobook · time-travel · insta-love · military · action-adventure · humor · warriors · poc-mc · female-mc

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Alien Overlords

by Taylor Vaughn

4.12 · 66 ratings

paranormal · book · romance · sci-fi · adult · aliens · fiction · poc-mc · alpha-mc · kidnapping · steamy · dark · military · black-mc · futuristic · audiobook · captivity · abuse · violent-conflict · sexual-assault

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The Swirl

by Michele Mills

4.11 · 39 ratings

polyamory · space · romance · reverse-harem · book · aliens · fiction · sci-fi · adult · family · cyborgs · fated-mates · steamy · abuse · poc-mc · action-adventure · paranormal · audiobook · forced-proximity · futuristic

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Fire Planet Warriors

by Calista Skye

4.03 · 36 ratings

aliens · exploration · fiction · paranormal · invasion · romance · book · sci-fi · space-travel · first-contact · violent-conflict · adult · poc-mc · action-adventure · steamy · soldiers · military · humor · survival · warriors

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Brion Brides

by Vi Voxley

4.06 · 84 ratings

action-adventure · aliens · fiction · adult · military · sci-fi · book · romance · steamy · alpha-mc · futuristic · violent-conflict · contemporary · paranormal · warriors · first-contact · invasion · war · female-mc · fated-mates

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The Ravager Chronicles

by Sara Page

3.86 · 42 ratings

paranormal · reverse-harem · book · steamy · romance · adult · polyamory · aliens · fiction · sci-fi · space · space-opera · action-adventure · poc-mc · royalty · military · fated-mates · survival · alpha-mc · galactic-empire

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Barbarian Brides

by Luna Hunter

3.98 · 67 ratings

shapeshifters · steamy · book · paranormal · aliens · fiction · action-adventure · humor · military · adult · sci-fi · romance · insta-love · other-world · space-travel · kidnapping · audiobook · space · alpha-mc · dark

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Xian Warriors

by Regine Abel

4.30 · 92 ratings

adult · military · soldiers · sci-fi · action-adventure · aliens · fiction · genetic-engineering · paranormal · romance · humor · first-contact · female-mc · alpha-mc · contemporary · book · shapeshifters · new-adult · poc-mc · dragons

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Starfighter Training Academy

by Grace Goodwin

4.22 · 41 ratings

fiction · action-adventure · sci-fi · military · adult · romance · book · paranormal · audiobook · genetic-engineering · war · aliens · first-contact · space-fleet · violent-conflict · invasion · steamy · colonization · space · suspense

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Draci

by Stasia Black

4.00 · 40 ratings

fiction · paranormal · sci-fi · adult · romance · book · aliens · audiobook · steamy · action-adventure · insta-love · military · fated-mates · poc-mc · dragons · new-adult · futuristic · mystery · suspense · anti-hero

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Kif Warriors

by Kiki Burrelli

4.11 · 48 ratings

military · book · romance · mlm · lgbtq · aliens · fiction · sci-fi · adult · steamy · paranormal · fated-mates · action-adventure · space-opera · children · insta-love · outlaws · violent-conflict · captivity · royalty

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TerraMates

by Lisa Lace

3.78 · 120 ratings

military · adult · poc-mc · aliens · fiction · book · action-adventure · romance · sci-fi · audiobook · paranormal · suspense · steamy · alpha-mc · contemporary · violent-conflict · myths · dystopia · futuristic · space

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Interstellar Brides: Ascension Saga

by Grace Goodwin

4.25 · 84 ratings

royalty · steamy · romance · action-adventure · aliens · fiction · adult · military · sci-fi · book · genetic-engineering · paranormal · billionaire · poc-mc · contemporary · mystery · warriors · space · family · insta-love

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Kyrzon Breeding Auction

by Luna Voss

3.96 · 51 ratings

adult · action-adventure · fiction · book · sci-fi · aliens · paranormal · first-contact · military · space-travel · colonization · insta-love · steamy · romance · fantasy · poc-mc · alpha-mc · other-world · romantic-love · warriors

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