Apex: Similar series
Extinction
by James D. Prescott
4.12 · 76 ratings
political-intrigue · sci-fi · genetic-engineering · adult · audiobook · first-contact · book · technothriller · hard-sci-fi · action-adventure · post-apocalyptic · aliens · fiction · alternate-history · violent-conflict · apocalyptic · psychological · invasion · espionage · space-travel
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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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Indian Hill
by Mark Tufo
4.49 · 102 ratings
sci-fi · first-contact · adult · violent-conflict · aliens · fiction · post-apocalyptic · invasion · book · soldiers · military · space-travel · space-fleet · exploration · action-adventure · zombies · audiobook · space · colonization · space-opera
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Cade Korbin Chronicles
by Jasper T. Scott
4.35 · 35 ratings
aliens · exploration · fiction · industrial-era · steampunk · adult · space-fleet · historical · violent-conflict · first-contact · military · space-travel · soldiers · sci-fi · book · invasion · cyberpunk · space · genetic-engineering · galactic-empire
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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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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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Yesterday's Kin Trilogy
by Nancy Kress
3.57 · 53 ratings
invasion · genetic-engineering · aliens · fiction · hard-sci-fi · violent-conflict · adult · first-contact · sci-fi · book · post-apocalyptic · audiobook · female-author · space · female-mc · space-opera · alpha-mc · action-adventure · disaster · epidemy
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Star Trek: A Time to...
by Keith R.A. DeCandido
3.82 · 92 ratings
space-opera · sci-fi · genetic-engineering · violent-conflict · military · book · invasion · aliens · fiction · action-adventure · adult · space · first-contact · literary-fiction · journey · children-books
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Forsaken Mercenary
by Jonathan Yanez
4.37 · 101 ratings
book · space · action-adventure · fiction · sci-fi · adult · post-apocalyptic · colonization · violent-conflict · genetic-engineering · cyberpunk · space-opera · historical · invasion · steampunk · industrial-era · aliens · first-contact · supernatural · soldiers
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Star Trek: Vanguard
by David Mack
4.03 · 82 ratings
space-opera · action-adventure · fiction · adult · space · sci-fi · book · first-contact · genetic-engineering · aliens · invasion · military · violent-conflict · literary-fiction · war · journey · exploration · anthologies · audiobook · space-travel
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Aurora Rhapsody
by G.S. Jennsen
4.27 · 113 ratings
space-opera · space-travel · sci-fi · military · fiction · action-adventure · cyberpunk · colonization · space-fleet · violent-conflict · first-contact · exploration · galactic-empire · space · adult · aliens · book · soldiers · ai · invasion
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Star Trek: Picard
by James Swallow
4.00 · 40 ratings
adult · genetic-engineering · sci-fi · fiction · action-adventure · space · first-contact · violent-conflict · aliens · book · invasion · audiobook · military · space-opera · 21st-century · female-author · politics · box-set · comics · exploration
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Starcaster
by J.N. Chaney
4.39 · 38 ratings
space-travel · space-opera · galactic-empire · genetic-engineering · violent-conflict · historical · adult · military · first-contact · book · steampunk · industrial-era · action-adventure · exploration · fiction · audiobook · fantasy · sci-fi · space · invasion
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Annihilation
by Saxon Andrew
3.97 · 70 ratings
violent-conflict · invasion · book · aliens · fiction · sci-fi · galactic-empire · military · young-adult · space-fleet · space · war · space-travel · first-contact · genetic-engineering · royalty · psychics · action-adventure · space-opera · hard-sci-fi
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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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Jani Kilian Chronicles
by Kristine Smith
3.88 · 42 ratings
adult · sci-fi · fiction · book · violent-conflict · military · space-opera · action-adventure · war · space · first-contact · aliens · futuristic · genetic-engineering · invasion · soldiers · colonization · steamy · space-fleet · female-author
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Star Trek: Errand of Fury
by Kevin Ryan
3.90 · 10 ratings
invasion · adult · book · action-adventure · aliens · fiction · sci-fi · space-opera · military · first-contact · violent-conflict · space · genetic-engineering · hard-sci-fi · war
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Shadows of the Void
by J.J. Green
3.80 · 10 ratings
violent-conflict · book · super-powered · fiction · sci-fi · space-opera · military · genetic-engineering · space · space-fleet · adult · invasion · action-adventure · aliens · first-contact · cyberpunk · time-travel · colonization · supernatural · young-adult
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Talonian Warriors
by Celeste Raye
4.19 · 16 ratings
aliens · fiction · colonization · invasion · genetic-engineering · adult · cyberpunk · military · space-fleet · first-contact · violent-conflict · galactic-empire · soldiers · book · paranormal · action-adventure · shapeshifters · romance · sci-fi · space
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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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Alien Skill
by Rae Knightly
4.50 · 12 ratings
coming-of-age · sci-fi · epic · middle-grade · book · young-adult · action-adventure · aliens · children-books · fiction · friendship · violent-conflict · survival · first-contact · family · invasion · super-powered · male-mc · urban-fantasy · children
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Perinqual Galaxy Hybrids
by C.Y. Croc
4.25 · 12 ratings
aliens · fiction · sci-fi · adult · romance · fantasy · action-adventure · super-powered · first-contact · anthologies · female-mc · space-travel · violent-conflict · book · invasion · colonization · galactic-empire · animals · humor · poc-mc
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Brides of the Mylos
by Loretta Johns
3.67 · 6 ratings
sci-fi · adult · genetic-engineering · invasion · military · aliens · fiction · action-adventure · audiobook · colonization · book · violent-conflict · first-contact · space-travel · space · paranormal · romance · insta-love
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Armada Wars
by R. Curtis Venture
3.80 · 5 ratings
space · adult · military · space-fleet · violent-conflict · space-opera · galactic-empire · aliens · fiction · colonization · book · invasion · genetic-engineering · dystopia · first-contact · soldiers · sci-fi · action-adventure · box-set · war
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