Ancient Enemy
by Vijaya Schartz
3.67 · 3 ratings
genetic-engineering · violent-conflict · adult · space-opera · sci-fi · aliens · fiction · book · invasion · paranormal · romance · angels · supernatural · shapeshifters
Ancient Enemy: Similar series
Cosmos' Gateway
by S.E. Smith
4.17 · 138 ratings
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Aurora Rising
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Claimings
by Lyn Gala
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aliens · fiction · age-gap · lgbtq · adult · sci-fi · mlm · romance · steamy · book · audiobook · paranormal · action-adventure · slow-burn · military · violent-conflict · space · friends-to-lovers · futuristic · female-author
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Dark World Mates
by Olivia Riley
3.97 · 60 ratings
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Stryxian Alien Warriors
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4.29 · 62 ratings
aliens · fiction · adult · sci-fi · book · romance · first-contact · violent-conflict · invasion · paranormal · action-adventure · humor · space-opera · historical · cyborgs · female-mc · fated-mates · military · space · galactic-empire
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Star
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3.97 · 69 ratings
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Chosen by the Karal
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Starfighter Training Academy
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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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Sholan Alliance
by Lisanne Norman
4.04 · 67 ratings
action-adventure · aliens · fiction · sci-fi · space-opera · first-contact · violent-conflict · adult · invasion · book · paranormal · romance · space · military · polyamory · dark-fantasy · horror · politics · exploration · futuristic
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Asterion Noir
by G.S. Jennsen
4.39 · 18 ratings
cyberpunk · genetic-engineering · space · audiobook · galactic-empire · politics · suspense · colonization · book · technothriller · invasion · romance · space-fleet · adult · violent-conflict · first-contact · horror · military · space-travel · space-opera
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Venora Mates
by Octavia Kore
3.95 · 21 ratings
fiction · adult · book · paranormal · action-adventure · humor · aliens · monsters · lgbtq · violent-conflict · polyamory · horror · dark · sci-fi · colonization · supernatural · reverse-harem · invasion · romance · genetic-engineering
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Unexpected
by Layla Stone
4.06 · 18 ratings
romance · book · paranormal · futuristic · aliens · fiction · sci-fi · adult · invasion · colonization · action-adventure · space-opera · first-contact · violent-conflict · kidnapping · steamy · abuse · galactic-empire · genetic-engineering · poc-mc
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Fated Mates of the Titan Empire
by Tammy Walsh
4.15 · 27 ratings
humor · paranormal · sci-fi · galactic-empire · space-opera · space-travel · first-contact · adult · genetic-engineering · violent-conflict · invasion · romance · book · colonization · aliens · fiction · action-adventure · military · new-adult · suspense
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Alien Baby Pact
by Aurelia Skye
4.00 · 13 ratings
sci-fi · fiction · first-contact · violent-conflict · adult · romance · invasion · book · poc-mc · aliens · paranormal · genetic-engineering · steamy · colonization · fantasy · new-adult · military · alpha-mc · futuristic · action-adventure
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Avroxee Mates
by Amelia Wilson
3.75 · 12 ratings
violent-conflict · invasion · romance · book · action-adventure · aliens · fiction · space-opera · first-contact · adult · humor · sci-fi · paranormal · audiobook · steamy · shapeshifters · colonization · poc-mc · vampires · witches-wizards
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Praesidio Corp
by Ava Ryant
4.00 · 16 ratings
fiction · aliens · sci-fi · adult · book · paranormal · space · violent-conflict · first-contact · shapeshifters · space-opera · invasion · romance · war · futuristic · fated-mates · siblings · humor · action-adventure · psychics
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Alpha Alien
by Flora Dare
3.37 · 19 ratings
fiction · romance · steamy · sci-fi · adult · aliens · paranormal · contemporary · inter-galactic · book · space · humor · galactic-empire · exploration · genetic-engineering · invasion · colonization · soldiers · space-travel · first-contact
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Fated Mates of the Varool
by Krista Luna
4.28 · 32 ratings
fiction · aliens · adult · humor · sci-fi · action-adventure · romance · violent-conflict · invasion · fated-mates · space-travel · space-opera · genetic-engineering · paranormal · female-mc · military · soldiers · book · fantasy · comics
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The Confederacy Treaty
by Lilly Cain
3.44 · 9 ratings
aliens · fiction · paranormal · sci-fi · adult · romance · book · steamy · space-opera · audiobook · military · first-contact · violent-conflict · invasion · futuristic · action-adventure
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Revant Warriors
by Celeste Raye
3.91 · 11 ratings
fiction · adult · aliens · exploration · soldiers · sci-fi · space-travel · galactic-empire · military · first-contact · genetic-engineering · cyberpunk · invasion · space-fleet · violent-conflict · book · colonization · action-adventure · paranormal · romance
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Alien Fated Mates for Ajnara Warriors
by Pearl Tate
4.40 · 20 ratings
paranormal · romance · adult · aliens · fiction · humor · post-apocalyptic · military · sci-fi · fated-mates · zombies · book · violent-conflict · first-contact · action-adventure · kind-mc · invasion · space-opera · soldiers · poc-mc
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Blue Planet Warriors
by Maia Starr
3.93 · 14 ratings
aliens · fiction · adult · sci-fi · exploration · action-adventure · futuristic · space-fleet · violent-conflict · first-contact · military · space-travel · soldiers · colonization · book · invasion · romance · genetic-engineering · galactic-empire · paranormal
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Genmate Dilemma
by Cara Bristol
4.50 · 6 ratings
life-death · space-travel · sci-fi · adult · violent-conflict · first-contact · secrets · fated-mates · aliens · fiction · action-adventure · psychics · enemies-to-lovers · paranormal · suspense · genetic-engineering · contemporary · shapeshifters · book · steamy
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Ancient Enemy
by Vijaya Schartz
3.67 · 3 ratings
genetic-engineering · violent-conflict · adult · space-opera · sci-fi · aliens · fiction · book · invasion · paranormal · romance · angels · supernatural · shapeshifters
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