Extinct
by Orson Scott Card
5.00 · 1 ratings
sci-fi · adult · action-adventure · aliens · fiction · first-contact · violent-conflict · stalking · book · invasion
Extinct: Similar series
Tao
by Wesley Chu
3.84 · 81 ratings
audiobook · espionage · fiction · aliens · action-adventure · sci-fi · book · political-intrigue · crime · spirituality · humor · alternate-history · space-fleet · male-author · first-contact · military · violent-conflict · invasion · religion · urban-fantasy
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Old Man's War
by John Scalzi
4.02 · 552 ratings
sci-fi · space-opera · fiction · space · audiobook · book · military · violent-conflict · adult · aliens · war · colonization · space-travel · action-adventure · humor · soldiers · exploration · genetic-engineering · galactic-empire · politics
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Black Fleet Saga
by Joshua Dalzelle
4.30 · 166 ratings
fiction · colonization · book · space · violent-conflict · adult · space-fleet · military · first-contact · space-opera · soldiers · sci-fi · audiobook · aliens · war · hard-sci-fi · invasion · epic · action-adventure · ai
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The Way
by Greg Bear
3.80 · 70 ratings
time-travel · action-adventure · fiction · adult · space-opera · sci-fi · post-apocalyptic · space · audiobook · aliens · hard-sci-fi · violent-conflict · military · classics · book · invasion · anthologies · literary · alternate-history · male-author
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The Uplift Saga
by David Brin
3.88 · 181 ratings
adult · sci-fi · fiction · space · space-opera · book · aliens · hard-sci-fi · audiobook · male-author · violent-conflict · action-adventure · first-contact · invasion · historical · 20th-century · war · animals · evolution · military
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Fated Mates of the Kalixian Warriors
by Presley Hall
4.22 · 161 ratings
romance · book · paranormal · aliens · fiction · fated-mates · adult · sci-fi · space · female-mc · humor · invasion · audiobook · action-adventure · first-contact · violent-conflict · steamy · alpha-mc · kind-mc · kidnapping
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Ruins of the Earth
by Christopher Hopper
4.37 · 41 ratings
book · military · adult · space · violent-conflict · soldiers · sci-fi · galactic-empire · colonization · aliens · fiction · invasion · first-contact · audiobook · action-adventure · dystopia · supernatural · urban-fantasy · war · apocalyptic
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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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Holy War
by Rick Partlow
4.46 · 46 ratings
book · first-contact · invasion · aliens · exploration · fiction · colonization · space-travel · galactic-empire · soldiers · violent-conflict · space-fleet · adult · military · sci-fi · space · action-adventure · space-opera · male-mc
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Probability Trilogy
by Nancy Kress
3.66 · 32 ratings
fiction · sci-fi · space-opera · space-travel · military · audiobook · first-contact · space · violent-conflict · adult · hard-sci-fi · invasion · book · action-adventure · aliens · female-author · war · single-planet · post-apocalyptic
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Ruins of the Galaxy
by J.N. Chaney
4.33 · 41 ratings
military · audiobook · first-contact · space · violent-conflict · soldiers · sci-fi · space-opera · galactic-empire · colonization · aliens · fiction · invasion · book · war · action-adventure · adult · young-adult · death · corruption
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Inferno Force of the Drexian Warriors
by Tana Stone
4.42 · 61 ratings
book · romance · adult · sci-fi · aliens · fiction · paranormal · invasion · violent-conflict · first-contact · humor · action-adventure · female-mc · forced-proximity · steamy · workplace · galactic-empire · enemies-to-lovers · suspense · poc-mc
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Baldwin's Legacy
by Nathan Hystad
4.26 · 23 ratings
aliens · fiction · sci-fi · space-opera · military · space · adult · invasion · violent-conflict · book · soldiers · space-travel · galactic-empire · first-contact · genetic-engineering · space-fleet · colonization · action-adventure · exploration · audiobook
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Darverius, House of DaR
by Jennifer Julie Miller
4.32 · 69 ratings
invasion · alpha-mc · aliens · fiction · adult · violent-conflict · book · first-contact · sci-fi · female-mc · romance · futuristic · steamy · paranormal · action-adventure · humor · fated-mates · kind-mc · vampires · kidnapping
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Savage Warriors
by Jude Gray
4.00 · 44 ratings
sci-fi · adult · aliens · fiction · paranormal · audiobook · romance · book · female-mc · space-travel · first-contact · violent-conflict · action-adventure · invasion · dark · steamy · futuristic · warriors · galactic-empire · alpha-mc
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Fated Mates of Adonia
by Ivy Sparks
4.00 · 22 ratings
adult · paranormal · sci-fi · aliens · fiction · female-mc · poc-mc · book · romance · first-contact · invasion · violent-conflict · action-adventure · fated-mates · space · alpha-mc · myths · new-adult · omegaverse · royalty
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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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Warrior Clans of Maekon
by Jude Gray
4.06 · 18 ratings
female-mc · aliens · fiction · romance · book · first-contact · steamy · adult · paranormal · sci-fi · space-travel · action-adventure · invasion · kidnapping · violent-conflict · alpha-mc · dark · galactic-empire · psychics · barbarians
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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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Anti Life
by Allen Kuzara
3.31 · 13 ratings
aliens · fiction · invasion · book · first-contact · violent-conflict · adult · sci-fi · space-opera · action-adventure · military · space · space-fleet · soldiers · colonization · supernatural · mystery · exploration · space-travel · politics
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Star Crusades Mercenaries
by Michael G. Thomas
3.92 · 12 ratings
galactic-empire · space-travel · space-opera · soldiers · space-fleet · adult · violent-conflict · space · sci-fi · first-contact · military · book · invasion · aliens · action-adventure · exploration · fiction · super-powered
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Cryo Crisis Homeworld
by Deiri Di
4.09 · 11 ratings
military · adult · sci-fi · action-adventure · fiction · romance · book · violent-conflict · paranormal · aliens · steamy · time-travel · first-contact · invasion · space-fleet · demons · galactic-empire · supernatural · poc-mc · colonization
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Brides of the Mylos
by Loretta Johns
3.57 · 7 ratings
action-adventure · aliens · fiction · colonization · book · invasion · genetic-engineering · violent-conflict · adult · audiobook · military · first-contact · sci-fi · space-travel · romance · space · insta-love · paranormal
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Sim War
by Henry V. O'Neil
3.88 · 8 ratings
adult · invasion · book · action-adventure · aliens · fiction · galactic-empire · military · first-contact · violent-conflict · sci-fi · space · political-intrigue · space-fleet · war · soldiers · space-opera
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