Mars Adventure Romance
by Jennifer Willis
3.67 · 3 ratings
book · adult · fiction · space-travel · action-adventure · exploration · colonization · humor · space-opera · sci-fi · violent-conflict · space · contemporary
Mars Adventure Romance: Similar series
Legacy Fleet Trilogy
by Nick Webb
4.10 · 89 ratings
action-adventure · supernatural · soldiers · sci-fi · galactic-empire · space-opera · first-contact · space-travel · military · audiobook · adult · space-fleet · space · violent-conflict · invasion · war · book · technothriller · colonization · exploration
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Poseidon's Children
by Alastair Reynolds
3.88 · 58 ratings
space-opera · book · audiobook · space · politics · exploration · action-adventure · fiction · hard-sci-fi · adult · sci-fi · space-travel · colonization · transhumanism · aliens · solarpunk · solar-system · invasion · literary-fiction · cyberpunk
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First Colony
by Ken Lozito
4.19 · 153 ratings
space · violent-conflict · invasion · book · aliens · exploration · fiction · soldiers · sci-fi · space-opera · first-contact · military · adult · colonization · space-travel · audiobook · war · action-adventure · space-fleet · mystery
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The Adventures of a Xeno-Archaeologist
by Jenny Schwartz
4.33 · 84 ratings
adult · first-contact · military · space-opera · sci-fi · action-adventure · aliens · fiction · futuristic · space · ai · supernatural · exploration · super-powered · cyberpunk · galactic-empire · book · romance · space-fleet · space-travel
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Drop Trooper
by Rick Partlow
4.38 · 152 ratings
military · space-fleet · adult · violent-conflict · soldiers · galactic-empire · colonization · aliens · fiction · invasion · book · space · sci-fi · space-travel · action-adventure · exploration · first-contact · space-opera · war · audiobook
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Hellhole Trilogy
by Brian Herbert
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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Aurora Rising
by G.S. Jennsen
4.13 · 66 ratings
sci-fi · space-travel · space-opera · military · first-contact · action-adventure · fiction · galactic-empire · cyberpunk · colonization · violent-conflict · space-fleet · 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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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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Crimson Worlds
by Jay Allan
4.11 · 172 ratings
fiction · war · military · violent-conflict · adult · sci-fi · book · space · space-opera · soldiers · aliens · audiobook · first-contact · space-fleet · galactic-empire · action-adventure · invasion · exploration · space-travel · colonization
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New Frontiers Trilogy
by Jasper T. Scott
3.96 · 26 ratings
space-travel · colonization · fiction · aliens · exploration · hard-sci-fi · book · military · adult · cyberpunk · space · genetic-engineering · space-fleet · violent-conflict · sci-fi · action-adventure · space-opera · supernatural · invasion · war
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Wholesale Slaughter
by Rick Partlow
4.41 · 56 ratings
adult · space · space-fleet · violent-conflict · military · galactic-empire · space-travel · soldiers · exploration · fiction · action-adventure · sci-fi · colonization · book · audiobook · space-opera · supernatural · war · invasion · genetic-engineering
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Rise of the Empire
by Ivan Kal
4.37 · 91 ratings
sci-fi · aliens · fiction · book · space-fleet · adult · space · violent-conflict · litrpg · military · space-opera · colonization · genetic-engineering · space-travel · war · invasion · galactic-empire · royalty · action-adventure · first-contact
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The Delphic Dame
by Jenny Schwartz
4.33 · 21 ratings
first-contact · adult · sci-fi · space-travel · space-opera · exploration · fiction · aliens · super-powered · space · galactic-empire · colonization · book · violent-conflict · action-adventure · cyberpunk · supernatural · invasion · outlaws · futuristic
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Anniversary Day Saga
by Kristine Kathryn Rusch
3.98 · 52 ratings
action-adventure · mystery · aliens · fiction · book · crime · audiobook · space · adult · sci-fi · space-opera · colonization · exploration · first-contact · genetic-engineering · space-travel · galactic-empire · female-author · noir · investigator
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The Pike Chronicles
by G.P. Hudson
4.00 · 26 ratings
fiction · action-adventure · soldiers · galactic-empire · sci-fi · space-travel · space-opera · first-contact · military · adult · violent-conflict · space · invasion · book · colonization · aliens · exploration · supernatural
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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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The Eurynome Code
by K. Gorman
4.27 · 22 ratings
space · book · military · female-author · violent-conflict · first-contact · space-fleet · adult · sci-fi · space-opera · fiction · audiobook · genetic-engineering · galactic-empire · colonization · soldiers · space-travel · female-mc · action-adventure · aliens
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Lunar Free State
by John E. Siers
4.40 · 15 ratings
literary-fiction · book · invasion · aliens · exploration · fiction · action-adventure · colonization · galactic-empire · space-opera · space-travel · soldiers · sci-fi · space-fleet · space · violent-conflict · first-contact · military · war · adult
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The Reluctant Adventures of Fletcher Connolly on the Interstellar Railroad
by Felix R. Savage
3.85 · 20 ratings
exploration · fiction · humor · sci-fi · space-travel · audiobook · adult · space · book · action-adventure · galactic-empire · anti-hero · cyberpunk · dystopia · colonization · supernatural · literary · space-opera · classics · aliens
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Alpha Alien
by Flora Dare
3.37 · 19 ratings
fiction · romance · steamy · sci-fi · adult · aliens · paranormal · contemporary · inter-galactic · book · space · humor · galactic-empire · exploration · genetic-engineering · invasion · colonization · soldiers · space-travel · first-contact
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Blue Planet Warriors
by Maia Starr
3.93 · 14 ratings
aliens · fiction · adult · sci-fi · exploration · action-adventure · futuristic · space-fleet · violent-conflict · first-contact · military · space-travel · soldiers · colonization · book · invasion · romance · genetic-engineering · galactic-empire · paranormal
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Lost on the Last Continent
by John C. Wright
4.00 · 5 ratings
action-adventure · aliens · exploration · fiction · colonization · book · literary-fiction · time-travel · invasion · space · space-fleet · adult · violent-conflict · military · first-contact · space-travel · galactic-empire · soldiers · male-author · sci-fi
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Robot Empire
by Kevin Partner
4.11 · 9 ratings
space · adult · action-adventure · literary · fiction · classics · space-opera · book · sci-fi · exploration · space-travel · galactic-empire · colonization · military · space-fleet · violent-conflict · robots · futuristic · ai · female-mc
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