Unit A12
by Morgan Robinson
4.06 · 32 ratings
sci-fi · adult · first-contact · aliens · fiction · book · romance · violent-conflict · invasion · arranged-marriage · polyamory · futuristic · steamy · reverse-harem · fated-mates · humor · fantasy · paranormal · alpha-mc · space-travel
Unit A12: Similar series
Galactic Gladiators
by Anna Hackett
4.32 · 306 ratings
adult · sci-fi · aliens · fiction · romance · book · invasion · violent-conflict · military · first-contact · warriors · audiobook · paranormal · steamy · action-adventure · alpha-mc · space · suspense · female-mc · supernatural
All books in this series ❯
Prime Mating Agency
by Regine Abel
4.17 · 256 ratings
aliens · monsters · first-contact · sci-fi · paranormal · fiction · adult · colonization · book · romance · humor · violent-conflict · invasion · poc-mc · fated-mates · arranged-marriage · marriage-of-convenience · alpha-mc · futuristic · steamy
All books in this series ❯
Hearts of Stone
by Miranda Bridges
4.17 · 72 ratings
aliens · fiction · action-adventure · dark · sci-fi · adult · romance · book · steamy · kidnapping · paranormal · contemporary · violent-conflict · alpha-mc · war · female-mc · new-adult · first-contact · invasion · royalty
All books in this series ❯
Aurora Rising
by G.S. Jennsen
4.13 · 66 ratings
sci-fi · space-travel · space-opera · first-contact · military · fiction · action-adventure · galactic-empire · cyberpunk · colonization · space-fleet · violent-conflict · aliens · exploration · ai · space · romance · book · soldiers · adult
All books in this series ❯
The Bridge Sequence
by Nathan Hystad
4.35 · 51 ratings
futuristic · post-apocalyptic · violent-conflict · invasion · book · fiction · aliens · action-adventure · travel · suspense · sci-fi · space-opera · first-contact · audiobook · adult · dystopia · romance · mystery · contemporary · industrial-era
All books in this series ❯
Katherine "Kitty" Katt
by Gini Koch
4.17 · 227 ratings
urban-fantasy · fiction · adult · paranormal · sci-fi · romance · book · aliens · action-adventure · humor · violent-conflict · invasion · contemporary · first-contact · super-powered · mystery · suspense · military · female-mc · alpha-mc
All books in this series ❯
Accidental Alien Brides
by January Bell
4.22 · 64 ratings
romance · sci-fi · adult · aliens · fiction · action-adventure · paranormal · steamy · book · first-contact · military · fated-mates · humor · arranged-marriage · invasion · space-fleet · violent-conflict · forced-proximity · dark · monsters
All books in this series ❯
Alien Abductors
by Calista Skye
4.08 · 36 ratings
romance · book · alpha-mc · paranormal · poc-mc · humor · aliens · fiction · adult · sci-fi · invasion · steamy · exploration · futuristic · first-contact · violent-conflict · dark · space-travel · shapeshifters · kidnapping
All books in this series ❯
Ours
by S.M. Matthews
3.90 · 51 ratings
aliens · fiction · polyamory · adult · sci-fi · romance · reverse-harem · book · steamy · paranormal · first-contact · violent-conflict · dark · invasion · kidnapping · captivity · monsters · insta-love · space-opera · marriage-of-convenience
All books in this series ❯
Fated Mates of the Sea Sand Warlords
by Ursa Dax
4.16 · 97 ratings
fiction · aliens · adult · book · romance · fated-mates · sci-fi · invasion · violent-conflict · first-contact · humor · steamy · alpha-mc · paranormal · barbarians · action-adventure · enemies-to-lovers · poc-mc · monsters · supernatural
All books in this series ❯
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
All books in this series ❯
Savage Martians
by Sue Mercury
4.05 · 20 ratings
fiction · sci-fi · paranormal · arranged-marriage · first-contact · adult · romance · book · aliens · violent-conflict · invasion · space-opera · audiobook · space · alpha-mc · genetic-engineering · age-gap · steamy · futuristic · royalty
All books in this series ❯
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
All books in this series ❯
Tail and Claw
by Nancey Cummings
4.06 · 28 ratings
book · adult · romance · aliens · fiction · contemporary · audiobook · invasion · violent-conflict · first-contact · sci-fi · action-adventure · paranormal · colonization · humor · arranged-marriage · supernatural · steamy · fantasy · dystopia
All books in this series ❯
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
All books in this series ❯
Davarian Heroes
by Juno Wells
4.00 · 13 ratings
book · first-contact · adult · violent-conflict · paranormal · sci-fi · aliens · fiction · humor · invasion · space · romance · dystopia · alpha-mc · insta-love · female-mc · royalty · warriors · fated-mates · fantasy
All books in this series ❯
Unit A12
by Morgan Robinson
4.06 · 32 ratings
sci-fi · adult · first-contact · aliens · fiction · book · romance · violent-conflict · invasion · arranged-marriage · polyamory · futuristic · steamy · reverse-harem · fated-mates · humor · fantasy · paranormal · alpha-mc · space-travel
All books in this series ❯
Kall Alien Warriors
by Sue Lyndon
4.17 · 12 ratings
paranormal · steamy · romance · sci-fi · adult · aliens · fiction · book · first-contact · enemies-to-lovers · arranged-marriage · galactic-empire · dystopia · invasion · post-apocalyptic · insta-love · space-opera · dark · violent-conflict · secrets
All books in this series ❯
Omegas of OAN
by Alexis B. Osborne
3.93 · 15 ratings
adult · fiction · steamy · book · paranormal · sci-fi · omegaverse · romance · invasion · first-contact · violent-conflict · aliens · alpha-mc · contemporary · genetic-engineering · futuristic · box-set · fantasy · mmf · super-powered
All books in this series ❯
Kirenai Fated Mates
by Tamsin Ley
4.29 · 17 ratings
aliens · fiction · book · romance · adult · sci-fi · paranormal · invasion · violent-conflict · first-contact · humor · fated-mates · mystery · female-mc · action-adventure · steamy · shapeshifters · alpha-mc · contemporary · forced-proximity
All books in this series ❯
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
All books in this series ❯
Shattered Galaxies
by Nancey Cummings
4.00 · 11 ratings
adult · book · aliens · fiction · first-contact · violent-conflict · invasion · action-adventure · humor · paranormal · sci-fi · time-travel · romance · monsters · female-mc · barbarians · galactic-empire · myths · dystopia · magic
All books in this series ❯
Narovian Mates
by Clarissa Lake
3.63 · 8 ratings
poc-mc · aliens · fiction · invasion · first-contact · adult · violent-conflict · sci-fi · romance · book · contemporary · paranormal · time-travel · anthologies · shapeshifters
All books in this series ❯
Alien Next Door
by Jessica E. Subject
3.60 · 5 ratings
aliens · fiction · book · steamy · contemporary · adult · sci-fi · invasion · romance · first-contact · violent-conflict · paranormal · mystery · billionaire
All books in this series ❯