Crisis of Empire
by Roger MacBride Allen
3.63 · 8 ratings
adult · fiction · space · violent-conflict · military · galactic-empire · book · sci-fi · space-opera · action-adventure · dystopia · audiobook
Crisis of Empire: Similar series
The Lost Fleet: Beyond the Frontier
by Jack Campbell
4.07 · 151 ratings
space-fleet · violent-conflict · military · space-travel · space-opera · sci-fi · action-adventure · aliens · fiction · war · futuristic · space · audiobook · politics · book · male-author · adult · exploration · nautical · first-contact
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The Palladium Wars
by Marko Kloos
4.29 · 85 ratings
fiction · soldiers · sci-fi · space-opera · galactic-empire · audiobook · military · violent-conflict · space · space-fleet · book · war · action-adventure · space-travel · adult · political-intrigue · espionage · suspense · politics · futuristic
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The Frontiers Saga: Part 2: Rogue Castes
by Ryk Brown
4.52 · 283 ratings
adult · violent-conflict · space · audiobook · military · space-travel · space-opera · sci-fi · exploration · fiction · action-adventure · book · war · hard-sci-fi · epic · galactic-empire · aliens · death · politics · technothriller
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Hellhole Trilogy
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3.78 · 41 ratings
space · adult · military · audiobook · horror · violent-conflict · space-opera · space-travel · galactic-empire · sci-fi · action-adventure · exploration · fiction · aliens · colonization · book · male-author · space-fleet · drama · war
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Kurtherian Gambit Universe
by Michael Anderle
4.48 · 1998 ratings
fiction · book · genetic-engineering · action-adventure · audiobook · sci-fi · violent-conflict · aliens · urban-fantasy · paranormal · military · space · adult · space-opera · galactic-empire · shapeshifters · first-contact · vampires · young-adult · invasion
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Sten
by Chris Bunch
4.05 · 134 ratings
sci-fi · fiction · adult · space-opera · action-adventure · book · military · violent-conflict · space · war · audiobook · soldiers · galactic-empire · children · space-fleet · dystopia · box-set · prison · young-adult · aliens
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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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Lost Starship
by Vaughn Heppner
4.24 · 155 ratings
military · space-fleet · adult · genetic-engineering · violent-conflict · soldiers · galactic-empire · space-opera · colonization · aliens · fiction · action-adventure · invasion · book · space · sci-fi · audiobook · space-travel · exploration · ai
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Ciaphas Cain
by Sandy Mitchell
4.19 · 327 ratings
fiction · sci-fi · military · adult · violent-conflict · book · space · humor · action-adventure · grim-dark · war · dystopia · comedy · space-opera · audiobook · pulp · galactic-empire · supernatural · aliens · exploration
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Crimson Worlds Refugees
by Jay Allan
4.29 · 60 ratings
exploration · fiction · soldiers · galactic-empire · sci-fi · space-travel · space-opera · first-contact · audiobook · military · space-fleet · adult · violent-conflict · space · invasion · book · colonization · aliens · action-adventure · war
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The Lost Fleet
by Raymond L. Weil
4.31 · 42 ratings
space · invasion · book · colonization · aliens · exploration · fiction · soldiers · galactic-empire · sci-fi · space-opera · space-travel · first-contact · audiobook · military · space-fleet · adult · violent-conflict · war · historical-fiction
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Rise of Mankind
by John Walker
4.07 · 28 ratings
aliens · exploration · colonization · fiction · book · invasion · space · genetic-engineering · adult · violent-conflict · military · first-contact · space-opera · space-travel · galactic-empire · sci-fi · war · space-fleet
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The Orion War
by M.D. Cooper
4.40 · 124 ratings
fiction · space-opera · sci-fi · adult · cyberpunk · hard-sci-fi · space · audiobook · book · violent-conflict · space-fleet · military · lgbtq · galactic-empire · soldiers · colonization · space-travel · exploration · supernatural · action-adventure
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Ganog Wars
by Chris Fox
4.29 · 24 ratings
cyborgs · invasion · male-mc · space-fleet · book · action-adventure · aliens · exploration · fiction · soldiers · sci-fi · space-opera · space-travel · galactic-empire · military · audiobook · space · violent-conflict · adult
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Warp Marine Corps
by C.J. Carella
4.19 · 32 ratings
book · fiction · soldiers · sci-fi · space-opera · military · adult · violent-conflict · space · galactic-empire · invasion · war · aliens · action-adventure · first-contact · space-fleet · hard-sci-fi
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Earth at War
by Rick Partlow
4.44 · 46 ratings
book · invasion · aliens · fiction · space-opera · galactic-empire · soldiers · violent-conflict · space · adult · military · first-contact · sci-fi · space-fleet · exploration · space-travel · hard-sci-fi · action-adventure · humor · colonization
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The Sentinel Trilogy
by Michael Wallace
4.00 · 20 ratings
fiction · soldiers · sci-fi · space-opera · galactic-empire · military · violent-conflict · space · space-fleet · adult · book · aliens · audiobook · invasion · action-adventure · first-contact
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The Humanity Unlimited Saga
by Terry Mixon
4.20 · 20 ratings
soldiers · galactic-empire · sci-fi · space-travel · politics · space-opera · audiobook · military · space-fleet · adult · violent-conflict · space · book · exploration · fiction · action-adventure
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Stellar Conquest
by David VanDyke
4.31 · 26 ratings
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Asterion Noir
by G.S. Jennsen
4.39 · 18 ratings
cyberpunk · genetic-engineering · space · audiobook · galactic-empire · politics · suspense · colonization · book · technothriller · invasion · romance · space-fleet · adult · violent-conflict · first-contact · horror · military · space-travel · space-opera
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CassaStar
by Alex J. Cavanaugh
3.89 · 18 ratings
action-adventure · fiction · book · audiobook · space · adult · sci-fi · space-opera · galactic-empire · exploration · military · violent-conflict · space-fleet · war · first-contact · genetic-engineering · soldiers
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The Void Queen Trilogy
by Michael Wallace
4.31 · 16 ratings
action-adventure · aliens · fiction · book · invasion · space · violent-conflict · adult · space-fleet · military · audiobook · space-opera · galactic-empire · soldiers · sci-fi · colonization · female-mc · first-contact
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Star Lawyers
by Tom Shepherd
4.08 · 12 ratings
military · audiobook · first-contact · space · violent-conflict · adult · space-fleet · sci-fi · space-opera · hispanic · galactic-empire · fiction · aliens · book · mystery · ai · supernatural
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Robot Empire
by Kevin Partner
4.11 · 9 ratings
adult · space · sci-fi · literary · space-opera · classics · action-adventure · fiction · book · galactic-empire · colonization · exploration · space-travel · military · space-fleet · violent-conflict · alpha-mc · ai · coming-of-age · female-mc
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