They Came for Blood
by Scott Moon
4.17 · 6 ratings
action-adventure · adult · aliens · dystopia · fiction · first-contact · mystery · violent-conflict · book · war · sci-fi · invasion · post-apocalyptic
They Came for Blood: Similar series
Remembrance of Earth's Past
by Liu Cixin
4.28 · 248 ratings
space · audiobook · aliens · fiction · hard-sci-fi · adult · sci-fi · poc-author · invasion · dystopia · contemporary · philosophy · violent-conflict · space-opera · book · 21st-century · politics · action-adventure · mystery · poc-mc
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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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The Fear Saga
by Stephen Moss
4.07 · 72 ratings
action-adventure · sci-fi · suspense · military · audiobook · dystopia · adult · space · violent-conflict · hard-sci-fi · invasion · war · book · aliens · fiction · space-opera · first-contact · grim-dark · political-intrigue · contemporary
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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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Saucer
by Stephen Coonts
3.81 · 58 ratings
first-contact · audiobook · military · adult · violent-conflict · suspense · sci-fi · aliens · action-adventure · fiction · mystery · invasion · book · technothriller · male-mc · space · war · space-travel · colonization · humor
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In Her Name: Redemption
by Michael R. Hicks
4.18 · 73 ratings
invasion · romance · galactic-empire · space · action-adventure · aliens · fiction · space-opera · sci-fi · violent-conflict · military · first-contact · book · dystopia · war · adult · post-apocalyptic · futuristic · warriors · 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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The Legend of ZERO
by Sara King
4.33 · 138 ratings
book · aliens · fiction · action-adventure · space-opera · sci-fi · post-apocalyptic · space · violent-conflict · first-contact · invasion · dystopia · war · futuristic · military · galactic-empire · adult · journey · horror · humor
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Transformation
by Neal Asher
4.20 · 50 ratings
sci-fi · book · post-apocalyptic · technothriller · invasion · space · audiobook · ai · aliens · fiction · action-adventure · mystery · investigator · hard-boiled · hard-sci-fi · adult · space-fleet · first-contact · military · violent-conflict
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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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The Forgotten
by M.R. Forbes
4.15 · 48 ratings
sci-fi · space · genetic-engineering · adult · dystopia · military · audiobook · space-fleet · apocalyptic · book · violent-conflict · invasion · post-apocalyptic · action-adventure · aliens · fiction · space-opera · political-intrigue · conspiracies · war
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Vampire Earth
by E.E. Knight
3.87 · 165 ratings
military · horror · violent-conflict · apocalyptic · action-adventure · fiction · paranormal · dystopia · post-apocalyptic · book · urban-fantasy · vampires · sci-fi · adult · war · audiobook · supernatural · futuristic · pulp · aliens
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In Her Name: The Last War
by Michael R. Hicks
4.21 · 58 ratings
military · first-contact · violent-conflict · space · adult · sci-fi · space-opera · galactic-empire · aliens · fiction · invasion · book · war · space-travel · action-adventure · epic · dystopia · warriors · post-apocalyptic · box-set
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Blackcollar
by Timothy Zahn
3.65 · 52 ratings
adult · violent-conflict · military · sci-fi · action-adventure · fiction · book · space · dystopia · space-opera · war · first-contact · aliens · invasion · espionage · genetic-engineering · galactic-empire · contemporary · political-intrigue · cyborgs
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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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The Comet Cycle
by Benjamin Percy
3.72 · 72 ratings
post-apocalyptic · violent-conflict · invasion · literary-fiction · book · supernatural · aliens · fiction · action-adventure · mystery · conspiracies · paranormal · political-intrigue · super-powered · suspense · first-contact · sci-fi · adult · dystopia · magical-realism
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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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Rebellion
by M.R. Forbes
4.21 · 34 ratings
space-opera · soldiers · sci-fi · adult · dystopia · space · genetic-engineering · first-contact · space-fleet · military · audiobook · violent-conflict · war · apocalyptic · book · post-apocalyptic · invasion · aliens · fiction · futuristic
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Dire Earth Cycle
by Jason M. Hough
3.76 · 79 ratings
book · post-apocalyptic · sci-fi · adult · action-adventure · fiction · violent-conflict · military · apocalyptic · hard-sci-fi · aliens · zombies · audiobook · horror · space · dystopia · space-opera · first-contact · mystery · suspense
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Plague Wars
by David VanDyke
4.02 · 130 ratings
sci-fi · violent-conflict · adult · apocalyptic · fiction · post-apocalyptic · book · military · genetic-engineering · horror · action-adventure · aliens · invasion · first-contact · dystopia · technothriller · space-opera · war · epidemy · disaster
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Children of a Dead Earth
by Patrick S. Tomlinson
3.86 · 28 ratings
colonization · invasion · book · audiobook · space · dystopia · action-adventure · mystery · aliens · fiction · crime · violent-conflict · adult · sci-fi · space-opera · dying-earth · police-procedural · conspiracies · political-intrigue · humor
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Freedom's Fire
by Bobby Adair
4.10 · 52 ratings
adult · invasion · book · colonization · aliens · exploration · fiction · epic · soldiers · space-travel · space-opera · galactic-empire · sci-fi · audiobook · military · first-contact · violent-conflict · space · space-fleet · dystopia
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Task Force Ombra
by Weston Ochse
4.00 · 22 ratings
first-contact · book · invasion · post-apocalyptic · audiobook · apocalyptic · war · action-adventure · aliens · fiction · sci-fi · violent-conflict · adult · military · paranormal · graphic-violence · death · kidnapping · horror · urban-fantasy
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Aliens Omnibus
by Yvonne Navarro
3.80 · 25 ratings
sci-fi · adult · horror · aliens · fiction · violent-conflict · military · first-contact · invasion · cyberpunk · dystopia · monsters · book · action-adventure · super-powered · dragons · time-travel · anthologies · post-apocalyptic · galactic-empire
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