Hellmarine: A Slice-of-Demon Military Sci-Fi Epic
by Virgil Knightley
4.17 · 6 ratings
demons · aliens · fiction · supernatural · harem · steamy · book · futuristic · violent-conflict · adult · military · audiobook · horror · space-opera · ai · angels · sci-fi · soldiers
Hellmarine: A Slice-of-Demon Military Sci-Fi Epic: Similar series
Black Fleet Trilogy
by Joshua Dalzelle
4.03 · 59 ratings
action-adventure · aliens · fiction · colonization · book · war · hard-sci-fi · invasion · space · violent-conflict · adult · space-fleet · military · audiobook · first-contact · space-opera · soldiers · sci-fi · epic · futuristic
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Safehold
by David Weber
4.11 · 191 ratings
sci-fi · colonization · supernatural · book · post-apocalyptic · space · audiobook · action-adventure · fiction · alternate-history · war · violent-conflict · adult · military · space-opera · space-fleet · soldiers · religion · spirituality · politics
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Aldebarian Alliance
by Dianne Duvall
4.37 · 89 ratings
action-adventure · aliens · fiction · female-mc · adult · sci-fi · vampires · book · romance · alpha-mc · audiobook · paranormal · humor · military · first-contact · space · futuristic · insta-love · space-opera · space-travel
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Theirs Not to Reason Why
by Jean Johnson
4.07 · 88 ratings
invasion · time-travel · book · paranormal · space · futuristic · war · female-mc · aliens · action-adventure · fiction · soldiers · sci-fi · space-travel · space-opera · first-contact · military · magic · adult · violent-conflict
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Privateer Tales
by Jamie McFarlane
4.36 · 334 ratings
space · book · space-opera · sci-fi · fiction · violent-conflict · military · audiobook · action-adventure · soldiers · futuristic · male-mc · exploration · space-fleet · colonization · adult · space-travel · aliens · young-adult · invasion
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Cosmos' Gateway
by S.E. Smith
4.17 · 138 ratings
romance · audiobook · contemporary · alpha-mc · fiction · aliens · sci-fi · invasion · book · paranormal · action-adventure · futuristic · military · first-contact · violent-conflict · space-fleet · adult · soldiers · steamy · alternate-history
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The Adventures of a Xeno-Archaeologist
by Jenny Schwartz
4.33 · 84 ratings
adult · first-contact · military · space-opera · sci-fi · action-adventure · aliens · fiction · futuristic · space · ai · supernatural · exploration · super-powered · cyberpunk · galactic-empire · book · romance · space-fleet · space-travel
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Imperial
by M.K. Eidem
4.32 · 63 ratings
adult · space-opera · sci-fi · aliens · fiction · alpha-mc · audiobook · paranormal · book · other-world · romance · violent-conflict · military · action-adventure · war · futuristic · space · steamy · space-travel · humor
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Chaos of the Covenant
by M.R. Forbes
4.35 · 109 ratings
space-opera · invasion · book · audiobook · genetic-engineering · space · angels · female-mc · aliens · fiction · military · adult · violent-conflict · sci-fi · soldiers · heroic-fantasy · action-adventure · space-fleet · galactic-empire · demons
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Cyborgs: More Than Machines
by Eve Langlais
4.00 · 118 ratings
romance · adult · military · sci-fi · aliens · fiction · action-adventure · cyborgs · genetic-engineering · paranormal · steamy · humor · futuristic · book · soldiers · space · suspense · cyberpunk · abuse · violent-conflict
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Star Carrier
by Ian Douglas
4.01 · 120 ratings
book · space · audiobook · action-adventure · aliens · fiction · space-opera · sci-fi · violent-conflict · adult · military · ai · war · hard-sci-fi · space-fleet · soldiers · male-author · invasion · first-contact · space-travel
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Star Justice
by Michael-Scott Earle
4.22 · 106 ratings
book · adult · magic · sci-fi · space-opera · fiction · action-adventure · audiobook · space · paranormal · harem · vampires · shapeshifters · military · violent-conflict · pulp · space-travel · psychics · aliens · futuristic
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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
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Antecedents' Legacy
by Daniel Schinhofen
4.67 · 36 ratings
adult · violent-conflict · military · space-opera · sci-fi · soldiers · aliens · action-adventure · fiction · space · litrpg · harem · book · steamy · space-fleet · romantic-love · audiobook · galactic-empire · fae · vampires
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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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Forgotten Colony
by M.R. Forbes
4.24 · 53 ratings
soldiers · sci-fi · space-opera · space-travel · first-contact · military · adult · space · genetic-engineering · futuristic · violent-conflict · invasion · book · colonization · aliens · exploration · fiction · horror · audiobook · zombies
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Forgotten Vengeance
by M.R. Forbes
4.49 · 31 ratings
fiction · aliens · book · invasion · futuristic · post-apocalyptic · space · genetic-engineering · adult · dystopia · military · violent-conflict · first-contact · space-opera · ai · galactic-empire · soldiers · sci-fi · apocalyptic · audiobook
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Janitors of the Post-Apocalypse
by Jim C. Hines
4.11 · 27 ratings
dystopia · post-apocalyptic · book · military · adult · violent-conflict · sci-fi · humor · fiction · apocalyptic · audiobook · genetic-engineering · space · zombies · ai · first-contact · horror · male-author · satire · comedy
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The Ravager Chronicles
by Sara Page
3.86 · 42 ratings
polyamory · steamy · adult · sci-fi · aliens · fiction · paranormal · romance · book · reverse-harem · space-opera · poc-mc · action-adventure · space · military · fated-mates · royalty · first-contact · violent-conflict · space-fleet
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AI Fleet
by Isaac Hooke
4.04 · 24 ratings
violent-conflict · space · cyberpunk · audiobook · adult · military · first-contact · space-fleet · galactic-empire · space-opera · soldiers · sci-fi · aliens · fiction · colonization · supernatural · book · ai · action-adventure · war
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The Resistance
by Nathan Hystad
4.33 · 24 ratings
space-opera · colonization · aliens · fiction · action-adventure · invasion · war · time-travel · book · audiobook · adult · violent-conflict · space · sci-fi · supernatural · first-contact · military · space-fleet · male-mc · soldiers
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Justice of the Covenant
by M.R. Forbes
4.50 · 22 ratings
space-opera · soldiers · sci-fi · adult · space-fleet · space · genetic-engineering · first-contact · violent-conflict · military · audiobook · shapeshifters · book · futuristic · invasion · aliens · fiction · galactic-empire · dystopia · female-mc
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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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Grimm's War
by Jeffery H. Haskell
4.52 · 27 ratings
space-travel · soldiers · violent-conflict · adult · space-fleet · military · first-contact · book · action-adventure · fiction · space-opera · exploration · galactic-empire · sci-fi · space · hard-sci-fi · invasion · aliens · colonization · audiobook
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