Earth 4040
by Eva Priest
4.00 · 1 ratings
invasion · adult · genetic-engineering · violent-conflict · romance · first-contact · polyamory · space-travel · sci-fi · aliens · humor · fiction · reverse-harem · anthologies
Earth 4040: Similar series
Mission Earth
by L. Ron Hubbard
3.44 · 220 ratings
sci-fi · space-opera · satire · adult · action-adventure · fiction · humor · book · violent-conflict · hard-sci-fi · aliens · political-intrigue · space · invasion · workplace · epic · espionage · military · first-contact · space-fleet
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The Human Division
by John Scalzi
4.07 · 243 ratings
adult · violent-conflict · military · space-opera · space-travel · sci-fi · fiction · aliens · space · soldiers · humor · action-adventure · exploration · war · genetic-engineering · audiobook · galactic-empire · colonization · book · first-contact
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Ruth & Gron
by V.C. Lancaster
3.85 · 87 ratings
adult · romance · steamy · paranormal · aliens · fiction · sci-fi · invasion · book · reverse-harem · alpha-mc · monsters · polyamory · first-contact · violent-conflict · space · forced-proximity · action-adventure · barbarians · kind-mc
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Aurora Rising
by G.S. Jennsen
4.13 · 66 ratings
sci-fi · space-travel · space-opera · military · first-contact · action-adventure · fiction · galactic-empire · cyberpunk · colonization · violent-conflict · space-fleet · aliens · exploration · ai · space · romance · book · soldiers · adult
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The Ujal
by Erin Tate
4.04 · 92 ratings
romance · shapeshifters · steamy · paranormal · aliens · fiction · adult · book · sci-fi · space-travel · invasion · galactic-empire · exploration · humor · mermaids · first-contact · violent-conflict · colonization · insta-love · supernatural
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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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Fire Planet Warriors
by Calista Skye
4.03 · 36 ratings
aliens · exploration · fiction · paranormal · invasion · romance · book · sci-fi · space-travel · first-contact · violent-conflict · adult · poc-mc · action-adventure · steamy · soldiers · military · humor · survival · warriors
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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
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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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Chosen by the Karal
by Harmony Raines
3.90 · 50 ratings
space-travel · sci-fi · adult · violent-conflict · first-contact · aliens · exploration · fiction · galactic-empire · paranormal · genetic-engineering · book · invasion · romance · colonization · futuristic · dystopia · contemporary · steamy · space
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Space Colony One
by J.J. Green
4.14 · 22 ratings
invasion · colonization · aliens · fiction · sci-fi · first-contact · space · violent-conflict · adult · space-fleet · anthologies · genetic-engineering · space-opera · space-travel · galactic-empire · military · post-apocalyptic · book · classics · action-adventure
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Veredian Chronicles
by Regine Abel
4.35 · 64 ratings
fiction · adult · sci-fi · romance · book · paranormal · aliens · action-adventure · humor · military · new-adult · soldiers · steamy · genetic-engineering · colonization · futuristic · invasion · reverse-harem · psychics · female-author
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Brides of the Aashi
by Belle Harper
3.86 · 28 ratings
humor · action-adventure · aliens · fiction · female-mc · romance · adult · invasion · violent-conflict · book · reverse-harem · sci-fi · polyamory · first-contact · paranormal · steamy · fantasy · new-adult · monsters · harem
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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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Renegade Cyborgs
by Jude Gray
4.04 · 24 ratings
book · invasion · romance · galactic-empire · cyborgs · aliens · fiction · female-mc · space-travel · sci-fi · violent-conflict · adult · first-contact · abuse · alpha-mc · slavery · reverse-harem · kind-mc · paranormal · forbidden-love
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Venora Mates
by Octavia Kore
3.95 · 21 ratings
fiction · adult · book · humor · action-adventure · aliens · monsters · lgbtq · violent-conflict · polyamory · horror · dark · sci-fi · colonization · supernatural · reverse-harem · invasion · romance · genetic-engineering · paranormal
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Pioneers
by Angel Lawson
4.00 · 14 ratings
aliens · fiction · sci-fi · polyamory · first-contact · violent-conflict · adult · invasion · romance · book · reverse-harem · paranormal · futuristic · steamy
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Fated Mates of the Titan Empire
by Tammy Walsh
4.15 · 27 ratings
aliens · fiction · humor · sci-fi · colonization · book · invasion · romance · adult · genetic-engineering · violent-conflict · first-contact · galactic-empire · space-travel · space-opera · paranormal · action-adventure · military · new-adult · prison
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Negari
by Charmaine Ross
4.00 · 12 ratings
violent-conflict · book · reverse-harem · dystopia · polyamory · first-contact · sci-fi · steamy · adult · invasion · humor · fiction · aliens · romance · paranormal · monsters
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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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Carrie Hatchett, Space Adventurer
by J.J. Green
3.75 · 16 ratings
action-adventure · humor · fiction · violent-conflict · sci-fi · space · aliens · exploration · first-contact · space-travel · comedy · anthologies · invasion · military · space-fleet · adult · galactic-empire · lgbtq · colonization · young-adult
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Fated Mates of the Varool
by Krista Luna
4.28 · 32 ratings
aliens · fiction · 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 Intergalactic Guide to Humans
by Skye MacKinnon
3.86 · 14 ratings
humor · aliens · fiction · invasion · book · first-contact · violent-conflict · adult · sci-fi · poc-mc · steamy · audiobook · romance · reverse-harem · contemporary · futuristic · multi-pov · polyamory · paranormal · fantasy
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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
All books in this series ❯