Return of the Nine: Similar romance series

The Tower and the Hive

by Anne McCaffrey

3.97 · 170 ratings

space · audiobook · paranormal · romance · female-author · space-opera · space-travel · epic · sci-fi · aliens · fiction · action-adventure · psychics · futuristic · young-adult · supernatural · book · invasion · violent-conflict · female-mc

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The Talents Universe

by Anne McCaffrey

4.02 · 281 ratings

paranormal · psychics · fiction · action-adventure · sci-fi · space-opera · audiobook · space · futuristic · epic · female-author · book · young-adult · female-mc · space-travel · romance · supernatural · urban-fantasy · aliens · violent-conflict

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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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Sirantha Jax

by Ann Aguirre

3.89 · 181 ratings

romance · book · urban-fantasy · paranormal · alpha-mc · space · futuristic · female-mc · aliens · fiction · action-adventure · sci-fi · space-opera · military · audiobook · dystopia · space-travel · war · psychics · mystery

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Arbai

by Sheri S. Tepper

3.98 · 74 ratings

feminism · book · female-author · adult · historical · sci-fi · 20th-century · fiction · space · supernatural · religion · invasion · literary-fiction · violent-conflict · space-opera · space-travel · female-mc · action-adventure · exploration · spirituality

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Confluence

by Jennifer Foehner Wells

4.09 · 118 ratings

aliens · exploration · fiction · female-mc · space-opera · space-travel · sci-fi · adult · book · space · action-adventure · violent-conflict · first-contact · invasion · audiobook · futuristic · military · female-author · technothriller · romance

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Zorn Warriors

by Laurann Dohner

3.88 · 127 ratings

steamy · adult · sci-fi · aliens · fiction · paranormal · romance · dark · insta-love · space-travel · futuristic · audiobook · contemporary · fighter · alpha-mc · space · supernatural · kidnapping · new-adult · action-adventure

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Veslor Mates

by Laurann Dohner

4.23 · 118 ratings

adult · sci-fi · action-adventure · aliens · fiction · futuristic · alpha-mc · paranormal · steamy · book · shapeshifters · romance · female-mc · space · supernatural · mythical-creatures · fated-mates · new-adult · multi-pov · military

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Aldebarian Alliance

by Dianne Duvall

4.37 · 89 ratings

romance · book · vampires · paranormal · audiobook · alpha-mc · female-mc · action-adventure · aliens · fiction · sci-fi · adult · space · humor · military · first-contact · steamy · urban-fantasy · suspense · contemporary

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Theirs Not to Reason Why

by Jean Johnson

4.07 · 88 ratings

invasion · time-travel · book · paranormal · space · futuristic · war · female-mc · aliens · action-adventure · fiction · soldiers · sci-fi · space-travel · space-opera · first-contact · military · magic · adult · violent-conflict

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The Adventures of a Xeno-Archaeologist

by Jenny Schwartz

4.33 · 84 ratings

adult · first-contact · military · space-opera · sci-fi · action-adventure · aliens · fiction · futuristic · space · ai · supernatural · exploration · super-powered · cyberpunk · galactic-empire · book · romance · space-fleet · space-travel

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Imperial

by M.K. Eidem

4.32 · 63 ratings

aliens · fiction · adult · space-opera · sci-fi · book · other-world · romance · alpha-mc · audiobook · paranormal · action-adventure · war · futuristic · violent-conflict · military · steamy · space · humor · female-mc

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Lords of Kassis

by S.E. Smith

4.14 · 115 ratings

adult · romance · sci-fi · aliens · fiction · paranormal · book · contemporary · steamy · action-adventure · futuristic · space · alpha-mc · audiobook · royalty · supernatural · female-mc · kidnapping · space-travel · dark

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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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Interstellar Sheriff

by Jenny Schwartz

4.39 · 35 ratings

space-opera · sci-fi · adult · historical · industrial-era · crime · action-adventure · fiction · aliens · female-mc · galactic-empire · space · book · western · space-travel · violent-conflict · futuristic · humor · ai · invasion

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Alien Enslaved

by Kaitlyn O'Connor

3.60 · 56 ratings

dark · sci-fi · book · steamy · romance · alpha-mc · paranormal · aliens · fiction · adult · barbarians · reverse-harem · kidnapping · space · contemporary · futuristic · slavery · polyamory · supernatural · warriors

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Shamans & Shifters Space Opera

by Jenny Schwartz

4.33 · 46 ratings

romance · shapeshifters · book · paranormal · space · aliens · fiction · action-adventure · sci-fi · space-travel · space-opera · first-contact · adult · futuristic · outlaws · space-fleet · magic · fae · colonization · galactic-empire

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R-D

by Connie Suttle

4.35 · 26 ratings

shapeshifters · adult · sci-fi · paranormal · supernatural · urban-fantasy · aliens · fiction · book · time-travel · space · demons · female-mc · vampires · mystery · action-adventure · romance · myths · law-enforcement · magic

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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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Sequoyah

by Sabrina Chase

4.15 · 24 ratings

futuristic · book · time-travel · female-mc · action-adventure · fiction · sci-fi · paranormal · space-opera · military · first-contact · space · adult · romance · war · colonization · aliens · space-travel · violent-conflict · cyborgs

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