The Extraterrestrial Security Program
by Linda Andrews
4.00 · 1 ratings
space-opera · outlaws · urban-fantasy · adult · aliens · fiction · paranormal · sci-fi · other-world · book
The Extraterrestrial Security Program: Similar series
Paradox
by Rachel Bach
3.95 · 99 ratings
feminism · paranormal · alpha-mc · space · book · romance · young-adult · space-travel · space-opera · sci-fi · violent-conflict · magic · military · female-author · war · futuristic · action-adventure · mystery · fiction · female-mc
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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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Corsairs
by Ruby Dixon
4.04 · 140 ratings
dark · sci-fi · adult · fated-mates · outlaws · aliens · fiction · paranormal · multi-pov · space · alpha-mc · romance · kidnapping · book · steamy · slavery · action-adventure · humor · audiobook · friends-to-lovers
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The Firebird Chronicles
by T.A. White
4.52 · 112 ratings
fiction · space-opera · sci-fi · urban-fantasy · book · paranormal · action-adventure · humor · aliens · female-mc · friendship · slow-burn · futuristic · magic · military · romance · space · alpha-mc · dystopia · adult
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Tales of the Ketty Jay
by Chris Wooding
4.20 · 107 ratings
steampunk · industrial-era · fiction · epic · book · audiobook · outlaws · action-adventure · humor · mystery · dieselpunk · adult · magic · paranormal · contemporary · high-fantasy · crime · space-opera · sci-fi · male-author
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Imperial
by M.K. Eidem
4.32 · 63 ratings
romance · other-world · book · paranormal · audiobook · alpha-mc · aliens · fiction · sci-fi · space-opera · adult · violent-conflict · steamy · space · futuristic · war · action-adventure · military · supernatural · royalty
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Touchstone
by Andrea K. Höst
4.18 · 95 ratings
aliens · fiction · sci-fi · young-adult · portal-travel · romance · book · paranormal · action-adventure · magic · epistolary · psychics · female-author · new-adult · other-world · space · humor · space-opera · urban-fantasy · mystery
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Kurtherian Gambit Universe
by Michael Anderle
4.48 · 1998 ratings
fiction · book · genetic-engineering · action-adventure · audiobook · sci-fi · violent-conflict · aliens · urban-fantasy · paranormal · military · space · adult · space-opera · galactic-empire · shapeshifters · first-contact · vampires · young-adult · invasion
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Lords of the Var
by Michelle M. Pillow
4.09 · 74 ratings
paranormal · dragons · romance · shapeshifters · adult · aliens · fiction · action-adventure · audiobook · space · supernatural · urban-fantasy · royalty · book · steamy · sci-fi · space-opera · futuristic · alpha-mc · literary-fiction
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Oath Forger
by Nia Mars
3.95 · 61 ratings
reverse-harem · polyamory · space · alpha-mc · adult · dystopia · sci-fi · paranormal · female-mc · royalty · fiction · aliens · romance · futuristic · post-apocalyptic · book · new-adult · space-opera · apocalyptic · steamy
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Borderlands
by Susan Grant
3.77 · 34 ratings
book · adult · space · paranormal · sci-fi · space-opera · aliens · fiction · action-adventure · futuristic · romance · military · outlaws · steamy · gothic · alpha-mc · violent-conflict · children · enemies-to-lovers · female-mc
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Divinity Warriors
by Michelle M. Pillow
3.85 · 41 ratings
romance · adult · book · steamy · other-world · paranormal · audiobook · alpha-mc · futuristic · warriors · aliens · fiction · urban-fantasy · witches-wizards · action-adventure · exploration · sword-sorcery · space-travel · military · first-contact
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Delroi Connection
by Loribelle Hunt
3.69 · 48 ratings
adult · military · action-adventure · fiction · book · alpha-mc · sci-fi · paranormal · aliens · steamy · romance · futuristic · fated-mates · space-opera · space-travel · psychics · female-mc · other-world · space · soldiers
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Rystani Warrior
by Susan Kearney
3.76 · 36 ratings
futuristic · romance · book · aliens · fiction · paranormal · sci-fi · contemporary · adult · steamy · space-opera · space · other-world · alpha-mc · cyborgs · dangerous-mc · time-travel · female-mc · psychics · space-travel
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The Empress Game Trilogy
by Rhonda Mason
3.75 · 26 ratings
book · urban-fantasy · space · action-adventure · fiction · space-opera · sci-fi · political-intrigue · galactic-empire · paranormal · dystopia · aliens · psychics · adult · space-fleet · military · time-travel · romance · post-apocalyptic · young-adult
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The Fixers of KarmaCorp
by Audrey Faye
4.31 · 54 ratings
fiction · female-mc · magic · adult · space-opera · urban-fantasy · space · galactic-empire · paranormal · alpha-mc · book · coming-of-age · aliens · conspiracies · mystery · law-enforcement · sci-fi · political-intrigue · fantasy · prophecy
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Space Lords
by Michelle M. Pillow
4.34 · 42 ratings
paranormal · aliens · action-adventure · fiction · adult · romance · book · urban-fantasy · audiobook · genetic-engineering · humor · sci-fi · space-travel · space-opera · dragons · steamy · exploration · first-contact · literary-fiction · vampires
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UN-Forgettable
by C.J. Barry
3.71 · 28 ratings
space · adult · sci-fi · paranormal · aliens · fiction · romance · futuristic · book · other-world · steamy · gothic · contemporary · space-opera · kidnapping · expert · historical · suspense · dark · outlaws
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Deg’Nara
by P.L. Parker
3.38 · 13 ratings
adult · sci-fi · paranormal · aliens · fiction · romance · steamy · book · other-world · space · space-opera · angels · supernatural · futuristic · anti-hero · dark · enemies-to-lovers · action-adventure · prison · captivity
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Divinity Healers
by Michelle M. Pillow
3.83 · 12 ratings
time-travel · book · steamy · romance · medical · aliens · exploration · action-adventure · fiction · urban-fantasy · space-travel · paranormal · sword-sorcery · adult · first-contact · audiobook · other-world · witches-wizards · sci-fi · futuristic
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The Danans
by Nhys Glover
3.93 · 14 ratings
aliens · fiction · book · other-world · reverse-harem · romance · adult · polyamory · sci-fi · action-adventure · paranormal · love-triangle · space-opera · harem · steamy · invasion · violent-conflict · survival · first-contact
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Planet Desire
by Delilah Devlin
3.71 · 14 ratings
adult · steamy · romance · fiction · space-opera · sci-fi · paranormal · book · futuristic · outlaws · aliens · fantasy · wlw · dark · alpha-mc · cyborgs · historical · kidnapping · shapeshifters · lgbtq
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Black Hole Brides
by Elsa Jade
3.86 · 7 ratings
sci-fi · paranormal · adult · book · romance · aliens · fiction · space-opera · urban-fantasy · dark · kidnapping · gods · fantasy · action-adventure · supernatural
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Atrophy
by Jess Anastasi
3.91 · 11 ratings
paranormal · book · romance · space-opera · sci-fi · adult · aliens · fiction · action-adventure · suspense · space · shapeshifters · violent-conflict · military · futuristic · outlaws · killer · law-enforcement · war · torture
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