The Unity
by Tristan Palmgren
3.60 · 10 ratings
spirituality · fiction · action-adventure · hard-sci-fi · historical · adult · sci-fi · space-opera · medieval · supernatural · urban-fantasy · aliens · anthologies · invasion · time-travel · book · crime · historical-fiction · audiobook · christian
The Unity: Similar series
The Tower and the Hive
by Anne McCaffrey
3.97 · 170 ratings
space · audiobook · paranormal · romance · female-author · space-opera · space-travel · epic · sci-fi · aliens · fiction · action-adventure · psychics · futuristic · young-adult · supernatural · book · invasion · violent-conflict · female-mc
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Catteni
by Anne McCaffrey
3.96 · 124 ratings
sci-fi · space-travel · space-opera · female-author · first-contact · adult · violent-conflict · futuristic · aliens · fiction · action-adventure · audiobook · dystopia · space · invasion · romance · other-world · colonization · female-mc · survival
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The Kurtherian Gambit
by Michael Anderle
4.48 · 585 ratings
aliens · fiction · paranormal · vampires · urban-fantasy · violent-conflict · action-adventure · genetic-engineering · space · galactic-empire · shapeshifters · military · space-opera · audiobook · book · sci-fi · war · suspense · invasion · first-contact
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Firefall
by Peter Watts
3.91 · 96 ratings
21st-century · book · adult · first-contact · horror · sci-fi · aliens · fiction · hard-sci-fi · space · cyberpunk · audiobook · dystopia · space-opera · action-adventure · mystery · cosmic-horror · ai · transhumanism · philosophy
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Tao
by Wesley Chu
3.84 · 81 ratings
sci-fi · espionage · aliens · fiction · action-adventure · political-intrigue · audiobook · book · space-fleet · male-author · first-contact · military · violent-conflict · crime · spirituality · humor · alternate-history · space · invasion · religion
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The Kurtherian Endgame
by Michael Anderle
4.62 · 232 ratings
invasion · book · genetic-engineering · galactic-empire · aliens · fiction · military · first-contact · violent-conflict · adult · sci-fi · vampires · shapeshifters · audiobook · paranormal · action-adventure · space-opera · space · urban-fantasy · magic
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The Second Dark Ages
by Michael Anderle
4.53 · 88 ratings
adult · sci-fi · action-adventure · fiction · genetic-engineering · paranormal · post-apocalyptic · book · violent-conflict · aliens · apocalyptic · dystopia · vampires · urban-fantasy · shapeshifters · military · audiobook · first-contact · space · suspense
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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 Way
by Greg Bear
3.80 · 70 ratings
action-adventure · time-travel · sci-fi · space-opera · adult · fiction · audiobook · space · post-apocalyptic · military · violent-conflict · hard-sci-fi · aliens · literary · invasion · anthologies · book · classics · 20th-century · first-contact
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A Time Odyssey
by Arthur C. Clarke
3.75 · 52 ratings
aliens · fiction · sci-fi · space-opera · audiobook · violent-conflict · space · adult · hard-sci-fi · invasion · book · time-travel · alternate-history · action-adventure · historical-fiction · literary · historical · male-author · post-apocalyptic · apocalyptic
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Galactic Gladiators: House of Rone
by Anna Hackett
4.39 · 100 ratings
aliens · fiction · action-adventure · romance · steamy · audiobook · adult · cyborgs · paranormal · sci-fi · invasion · book · first-contact · violent-conflict · space · supernatural · military · warriors · alpha-mc · insta-love
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Origins
by Jeremy Robinson
3.91 · 80 ratings
action-adventure · audiobook · book · adult · fiction · paranormal · mystery · supernatural · horror · suspense · thriller · monsters · spirituality · invasion · sci-fi · christian · historical-fiction · historical · violent-conflict · aliens
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Chanur
by C.J. Cherryh
4.10 · 105 ratings
space · cats · adult · sci-fi · space-opera · aliens · fiction · animals · invasion · female-author · first-contact · violent-conflict · action-adventure · audiobook · book · hard-sci-fi · anthologies · box-set · female-mc · contemporary
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Raider Warlords of the Vandar
by Tana Stone
4.30 · 142 ratings
book · adult · sci-fi · aliens · fiction · galactic-empire · romance · steamy · first-contact · female-mc · action-adventure · space · invasion · violent-conflict · humor · paranormal · new-adult · alpha-mc · audiobook · fighter
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Age of Expansion: The Ascension Myth
by Ell Leigh Clarke
4.46 · 150 ratings
book · aliens · fiction · colonization · supernatural · space-opera · galactic-empire · sci-fi · space · audiobook · violent-conflict · military · invasion · space-travel · genetic-engineering · exploration · soldiers · adult · space-fleet · action-adventure
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Dark Space
by Jasper T. Scott
3.84 · 82 ratings
invasion · space-fleet · book · galactic-empire · audiobook · space · fiction · aliens · sci-fi · space-opera · military · violent-conflict · adult · historical · supernatural · genetic-engineering · dystopia · cyberpunk · steampunk · industrial-era
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Void Wraith
by Chris Fox
4.20 · 81 ratings
exploration · fiction · audiobook · space · book · soldiers · sci-fi · space-opera · space-travel · military · violent-conflict · adult · space-fleet · action-adventure · aliens · galactic-empire · cyborgs · invasion · genetic-engineering · war
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Species Imperative
by Julie E. Czerneda
4.07 · 44 ratings
adult · anthologies · space-opera · sci-fi · aliens · fiction · hard-sci-fi · space · exploration · action-adventure · invasion · violent-conflict · first-contact · female-author · space-travel · female-mc · dystopia · cyberpunk · audiobook · paranormal
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Shamans & Shifters Space Opera
by Jenny Schwartz
4.33 · 46 ratings
romance · shapeshifters · book · paranormal · space · aliens · fiction · action-adventure · sci-fi · space-travel · space-opera · first-contact · adult · futuristic · outlaws · space-fleet · magic · fae · colonization · galactic-empire
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The Ixan Prophecies
by Scott Bartlett
4.00 · 36 ratings
military · book · sci-fi · invasion · aliens · exploration · fiction · colonization · galactic-empire · space-opera · soldiers · space-fleet · adult · space · violent-conflict · first-contact · audiobook · war · hard-sci-fi · space-travel
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Daedalus
by Michael J. Martinez
3.76 · 25 ratings
aliens · action-adventure · exploration · fiction · alternate-history · industrial-era · steampunk · historical · adult · violent-conflict · historical-fiction · space-opera · sci-fi · time-travel · book · invasion · space · first-contact · military · space-travel
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The Ixan Universe
by Scott Bartlett
3.94 · 54 ratings
violent-conflict · book · galactic-empire · audiobook · space · fiction · sci-fi · soldiers · space-opera · military · adult · space-fleet · invasion · colonization · hard-sci-fi · aliens · first-contact · supernatural · action-adventure · space-travel
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Mech Wars
by Scott Bartlett
3.86 · 22 ratings
fiction · aliens · hard-sci-fi · space-fleet · adult · violent-conflict · first-contact · military · space-travel · space-opera · soldiers · sci-fi · colonization · supernatural · book · invasion · space · action-adventure · audiobook · galactic-empire
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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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