Izothian Chronicles
by Elle Harper
4.00 · 4 ratings
book · invasion · sci-fi · romance · aliens · violent-conflict · space · fiction · first-contact · adult
Izothian Chronicles: Similar series
Catteni
by Anne McCaffrey
3.96 · 124 ratings
adult · invasion · romance · violent-conflict · female-author · first-contact · space-opera · space-travel · sci-fi · aliens · fiction · action-adventure · futuristic · dystopia · space · audiobook · colonization · other-world · female-mc · survival
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Stolen by an Alien
by Amanda Milo
4.08 · 179 ratings
aliens · humor · sci-fi · steamy · fiction · adult · book · romance · paranormal · violent-conflict · first-contact · invasion · audiobook · space · alpha-mc · action-adventure · dark · kind-mc · kidnapping · friends-to-lovers
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Galactic Gladiators: House of Rone
by Anna Hackett
4.39 · 100 ratings
action-adventure · aliens · fiction · steamy · romance · adult · cyborgs · audiobook · sci-fi · paranormal · book · invasion · violent-conflict · first-contact · space · supernatural · military · warriors · alpha-mc · female-mc
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Captured by Aliens
by A.G. Wilde
4.03 · 77 ratings
fiction · aliens · action-adventure · female-mc · adult · first-contact · sci-fi · book · steamy · romance · paranormal · dark · kidnapping · alpha-mc · galactic-empire · humor · poc-mc · slow-burn · violent-conflict · invasion
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The Alliance
by S.E. Smith
4.12 · 120 ratings
aliens · fiction · romance · book · sci-fi · adult · paranormal · audiobook · post-apocalyptic · military · futuristic · action-adventure · dystopia · first-contact · violent-conflict · contemporary · invasion · space · steamy · space-travel
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Fated Mates of the Kalixian Warriors
by Presley Hall
4.22 · 161 ratings
paranormal · romance · book · adult · sci-fi · aliens · fiction · fated-mates · space · female-mc · humor · audiobook · invasion · first-contact · violent-conflict · action-adventure · alpha-mc · steamy · kind-mc · kidnapping
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In Her Name
by Michael R. Hicks
4.23 · 161 ratings
military · violent-conflict · sci-fi · space-opera · aliens · fiction · space · galactic-empire · first-contact · adult · invasion · book · action-adventure · war · epic · space-travel · warriors · dystopia · romance · post-apocalyptic
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Sarazen Saga
by Isabel Wroth
4.15 · 52 ratings
sci-fi · adult · fated-mates · aliens · fiction · paranormal · book · shapeshifters · romance · violent-conflict · first-contact · alpha-mc · contemporary · invasion · space · steamy · space-opera · insta-love · children · monsters
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Valos of Sonhadra
by Regine Abel
3.98 · 126 ratings
romance · paranormal · aliens · fiction · sci-fi · adult · reverse-harem · book · steamy · polyamory · shapeshifters · space · first-contact · invasion · violent-conflict · abuse · genetic-engineering · futuristic · colonization · humor
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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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Outer Limits Quadrant
by Alexis B. Osborne
4.02 · 27 ratings
paranormal · romance · steamy · book · military · adult · sci-fi · action-adventure · aliens · fiction · monsters · space · genetic-engineering · galactic-empire · invasion · first-contact · violent-conflict · soldiers · dark · space-travel
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Aurora Rhapsody
by G.S. Jennsen
4.27 · 113 ratings
space-opera · space-travel · sci-fi · military · fiction · action-adventure · cyberpunk · colonization · space-fleet · violent-conflict · first-contact · exploration · galactic-empire · space · adult · aliens · book · soldiers · ai · invasion
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The Ravager Chronicles
by Sara Page
3.86 · 42 ratings
paranormal · steamy · book · reverse-harem · romance · sci-fi · adult · polyamory · aliens · fiction · space · space-opera · action-adventure · poc-mc · royalty · military · fated-mates · galactic-empire · alpha-mc · survival
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Warriors of the Oasis
by Ivy Sparks
4.04 · 24 ratings
adult · paranormal · female-mc · poc-mc · action-adventure · aliens · fiction · romance · book · first-contact · violent-conflict · space · sci-fi · insta-love · fated-mates · invasion · monsters · kidnapping · multi-pov · audiobook
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Warriors of Karal
by Harmony Raines
4.18 · 38 ratings
steamy · book · invasion · fiction · aliens · exploration · action-adventure · romance · colonization · galactic-empire · space-travel · paranormal · sci-fi · adult · first-contact · violent-conflict · contemporary · other-world · warriors · dystopia
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Aurora Renegades
by G.S. Jennsen
4.46 · 28 ratings
action-adventure · aliens · exploration · fiction · military · first-contact · violent-conflict · space-fleet · adult · soldiers · sci-fi · space-travel · space-opera · colonization · invasion · book · audiobook · space · cyberpunk · utopia
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Amaranthe
by G.S. Jennsen
4.32 · 122 ratings
cyberpunk · colonization · space-opera · sci-fi · violent-conflict · first-contact · military · aliens · fiction · galactic-empire · invasion · space-travel · space-fleet · exploration · action-adventure · space · adult · soldiers · book · genetic-engineering
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Vrisha Warriors
by Olivia Riley
4.19 · 26 ratings
adult · romance · book · slow-burn · action-adventure · aliens · sci-fi · fiction · paranormal · first-contact · invasion · colonization · enemies-to-lovers · multi-pov · space · forced-proximity · monsters · exploration · soldiers · dark
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Planet of Desire
by Robin Lovett
3.60 · 25 ratings
steamy · book · romance · paranormal · space · fated-mates · aliens · fiction · action-adventure · sci-fi · adult · military · invasion · forced-proximity · violent-conflict · first-contact · enemies-to-lovers · war · lgbtq · captivity
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Alien Auction House
by Zara Zenia
3.73 · 15 ratings
poc-mc · aliens · fiction · book · military · adult · violent-conflict · sci-fi · exploration · invasion · romance · audiobook · first-contact · space · genetic-engineering · space-fleet · soldiers · paranormal · space-travel · fantasy
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Talonian Warriors
by Celeste Raye
4.19 · 16 ratings
aliens · fiction · colonization · invasion · genetic-engineering · adult · cyberpunk · military · space-fleet · first-contact · violent-conflict · galactic-empire · soldiers · book · paranormal · action-adventure · shapeshifters · romance · sci-fi · space
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Centauri Brides
by Kallista Dane
4.31 · 26 ratings
violent-conflict · adult · first-contact · book · invasion · aliens · fiction · sci-fi · romance · space-travel · space · exploration · paranormal · steamy · action-adventure · military · fated-mates · wlw · bisexuality · mystery
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Galactic Vikings
by Lucee Joie
4.16 · 19 ratings
book · invasion · aliens · fiction · humor · galactic-empire · sci-fi · adult · violent-conflict · first-contact · post-apocalyptic · romance · futuristic · space · paranormal · scandinavia · europe · medieval · box-set · historical
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Galactic Alpha's Conquest
by Stella Cassy
3.92 · 13 ratings
sci-fi · adult · aliens · fiction · paranormal · shapeshifters · book · space-travel · space-fleet · violent-conflict · first-contact · military · poc-mc · galactic-empire · invasion · space · romance · dragons · fantasy · abuse
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