Doomsday Hunter
by Eric Vall
4.36 · 11 ratings
futuristic · post-apocalyptic · book · harem · fiction · sci-fi · polyamory · litrpg · adult · romance · invasion · time-travel · fantasy · action-adventure · aliens · paranormal · audiobook · first-contact · violent-conflict
Doomsday Hunter: 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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Xenogenesis
by Octavia E. Butler
4.25 · 151 ratings
female-author · first-contact · horror · poc-author · post-apocalyptic · classics · literary · feminism · space · dystopia · apocalyptic · lgbtq · action-adventure · afrofuturism · aliens · fiction · female-mc · poc-mc · 20th-century · sci-fi
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Spin
by Robert Charles Wilson
3.74 · 81 ratings
book · time-travel · invasion · post-apocalyptic · violent-conflict · first-contact · sci-fi · fiction · aliens · space · dystopia · audiobook · space-opera · action-adventure · apocalyptic · hard-sci-fi · futuristic · evolution · young-adult · adult
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Cosmos' Gateway
by S.E. Smith
4.17 · 138 ratings
audiobook · contemporary · alpha-mc · romance · sci-fi · aliens · fiction · paranormal · invasion · book · first-contact · military · space-fleet · adult · violent-conflict · soldiers · action-adventure · futuristic · steamy · alternate-history
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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
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Wild Wastes
by Randi Darren
4.32 · 101 ratings
polyamory · adult · action-adventure · fantasy · fiction · audiobook · litrpg · harem · post-apocalyptic · book · steamy · magic · futuristic · apocalyptic · paranormal · fae · dark · alternate-history · lgbtq · urban-fantasy
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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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Riv’s Sanctuary
by A.G. Wilde
4.12 · 44 ratings
dark · sci-fi · adult · futuristic · poc-mc · female-mc · fiction · aliens · action-adventure · humor · paranormal · alpha-mc · space · romance · kidnapping · book · first-contact · violent-conflict · galactic-empire · audiobook
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The System Apocalypse
by Tao Wong
4.31 · 185 ratings
aliens · fiction · first-contact · violent-conflict · post-apocalyptic · invasion · book · litrpg · audiobook · fantasy · adult · heroic-fantasy · action-adventure · paranormal · dystopia · lgbtq · apocalyptic · fae · progression-fantasy · urban-fantasy
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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
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Mail-Order Brides of Crakair
by Ava Ross
4.19 · 82 ratings
action-adventure · humor · romance · book · sci-fi · adult · fiction · aliens · galactic-empire · audiobook · invasion · colonization · violent-conflict · dystopia · steamy · insta-love · first-contact · paranormal · new-adult · soldiers
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AL:ICE
by Charles W. Lamb
4.13 · 46 ratings
aliens · fiction · soldiers · space-opera · sci-fi · audiobook · military · first-contact · litrpg · space · violent-conflict · dystopia · invasion · adult · book · apocalyptic · time-travel · harem · action-adventure · paranormal
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First Ordinance
by Connie Suttle
4.07 · 54 ratings
supernatural · vampires · romance · book · reverse-harem · shapeshifters · audiobook · paranormal · fantasy · fiction · aliens · futuristic · polyamory · magic · demons · abuse · post-apocalyptic · time-travel · action-adventure · gods
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Divinity Warriors
by Michelle M. Pillow
3.85 · 41 ratings
paranormal · alpha-mc · audiobook · other-world · book · steamy · romance · adult · futuristic · warriors · fiction · aliens · exploration · urban-fantasy · space-travel · sword-sorcery · historical · first-contact · military · action-adventure
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Descend
by David Burke
4.24 · 42 ratings
litrpg · audiobook · harem · book · adult · fiction · supernatural · virtual-reality · steamy · polyamory · magic · aliens · action-adventure · fantasy · bisexuality · drama · steampunk · apocalyptic · paranormal · dungeons-dragons
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Warriors Of Sangrin
by Nancey Cummings
4.14 · 91 ratings
action-adventure · aliens · fiction · sci-fi · adult · romance · paranormal · military · first-contact · book · violent-conflict · invasion · fated-mates · futuristic · soldiers · space-fleet · genetic-engineering · alpha-mc · audiobook · super-powered
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Brides of the Aashi
by Belle Harper
3.86 · 28 ratings
sci-fi · violent-conflict · adult · polyamory · first-contact · book · reverse-harem · invasion · romance · action-adventure · humor · aliens · female-mc · fiction · new-adult · paranormal · steamy · fantasy · harem · male-mc
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Goblin Apocalypse
by Michael Dalton
4.50 · 20 ratings
harem · galactic-empire · sci-fi · soldiers · paranormal · magic · male-mc · audiobook · military · polyamory · litrpg · first-contact · steamy · book · adult · romance · futuristic · action-adventure · fantasy · post-apocalyptic
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Demon Princess Magical Chaos
by J.J. Pavlov
4.27 · 33 ratings
female-mc · fiction · action-adventure · fantasy · gods · lgbtq · wlw · magic · adult · demons · epic · comics · harem · supernatural · reincarnation · litrpg · audiobook · paranormal · medieval · aliens
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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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The Adventures of Grave
by G.S. D'Moore
4.47 · 15 ratings
fantasy · super-powered · fiction · paranormal · harem · apocalyptic · book · adult · audiobook · action-adventure · alternate-history · steamy · crime · romance · post-apocalyptic · futuristic · magic · cyberpunk · polyamory · new-adult
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The Confederacy Treaty
by Lilly Cain
3.44 · 9 ratings
adult · romance · book · steamy · aliens · fiction · sci-fi · paranormal · invasion · futuristic · action-adventure · space-opera · audiobook · military · first-contact · violent-conflict
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The Intergalactic Guide to Humans
by Skye MacKinnon
3.86 · 14 ratings
invasion · book · aliens · fiction · humor · sci-fi · first-contact · adult · violent-conflict · steamy · poc-mc · audiobook · romance · reverse-harem · contemporary · polyamory · futuristic · paranormal · multi-pov · space
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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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