The Phases of Mars: Similar romance series

Legacy Fleet Trilogy

by Nick Webb

4.10 · 89 ratings

space-fleet · invasion · book · technothriller · colonization · supernatural · war · action-adventure · aliens · exploration · fiction · soldiers · sci-fi · space-opera · space-travel · galactic-empire · military · audiobook · first-contact · space

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Undying Mercenaries

by B.V. Larson

4.28 · 383 ratings

colonization · invasion · book · audiobook · space · galactic-empire · aliens · fiction · war · military · violent-conflict · space-fleet · adult · soldiers · sci-fi · space-opera · first-contact · space-travel · hard-sci-fi · exploration

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Doom Star

by Vaughn Heppner

3.92 · 104 ratings

space · aliens · fiction · action-adventure · soldiers · sci-fi · space-opera · military · space-fleet · adult · violent-conflict · post-apocalyptic · invasion · book · colonization · galactic-empire · dystopia · genetic-engineering · exploration · space-travel

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Ascension Wars

by Jasper T. Scott

3.86 · 58 ratings

aliens · exploration · fiction · industrial-era · steampunk · first-contact · military · historical · adult · space-fleet · violent-conflict · soldiers · sci-fi · space-travel · colonization · supernatural · post-apocalyptic · invasion · book · genetic-engineering

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Extinction Wars

by Vaughn Heppner

4.07 · 72 ratings

book · invasion · aliens · exploration · fiction · action-adventure · colonization · galactic-empire · space-opera · space-travel · soldiers · sci-fi · adult · space-fleet · space · violent-conflict · first-contact · military · audiobook · war

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Blood on the Stars

by Jay Allan

4.33 · 243 ratings

aliens · exploration · fiction · violent-conflict · adult · space-fleet · military · first-contact · space-opera · space-travel · soldiers · sci-fi · book · invasion · space · galactic-empire · colonization · war · audiobook · action-adventure

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Drop Trooper

by Rick Partlow

4.38 · 152 ratings

book · invasion · aliens · fiction · colonization · galactic-empire · soldiers · adult · space-fleet · violent-conflict · military · exploration · action-adventure · space-travel · sci-fi · space · space-opera · first-contact · war · audiobook

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Portal Wars

by Jay Allan

3.99 · 38 ratings

invasion · adult · dystopia · book · war · colonization · action-adventure · exploration · fiction · aliens · soldiers · sci-fi · space-travel · space-opera · galactic-empire · audiobook · military · first-contact · violent-conflict · space

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Crimson Worlds Refugees

by Jay Allan

4.29 · 60 ratings

violent-conflict · invasion · book · colonization · aliens · exploration · fiction · action-adventure · soldiers · sci-fi · galactic-empire · space-opera · space-travel · first-contact · military · audiobook · adult · space-fleet · space · war

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Crimson Worlds

by Jay Allan

4.11 · 172 ratings

adult · war · fiction · sci-fi · military · violent-conflict · book · space-opera · space · soldiers · aliens · galactic-empire · audiobook · first-contact · space-fleet · invasion · action-adventure · exploration · space-travel · colonization

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The Last War

by Peter Bostrom

4.09 · 34 ratings

first-contact · book · technothriller · invasion · aliens · exploration · colonization · fiction · space-travel · space-opera · galactic-empire · soldiers · sci-fi · genetic-engineering · space · space-fleet · adult · military · violent-conflict · action-adventure

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The Salvage Title Trilogy

by Kevin Steverson

4.31 · 33 ratings

exploration · fiction · soldiers · space-opera · ai · space-travel · galactic-empire · military · first-contact · sci-fi · space · violent-conflict · adult · space-fleet · invasion · book · literary-fiction · war · colonization · action-adventure

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The Last Hunter

by J.N. Chaney

4.44 · 127 ratings

aliens · fiction · colonization · book · invasion · genetic-engineering · space · space-fleet · adult · military · violent-conflict · space-opera · galactic-empire · soldiers · sci-fi · first-contact · action-adventure · audiobook · exploration · space-travel

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The Lost Fleet

by Raymond L. Weil

4.31 · 42 ratings

fiction · soldiers · galactic-empire · sci-fi · space-opera · space-travel · first-contact · audiobook · military · space-fleet · adult · violent-conflict · space · invasion · book · colonization · aliens · exploration · war · ai

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Star Cross

by Raymond L. Weil

4.47 · 30 ratings

slavery · invasion · space-fleet · book · colonization · fiction · aliens · exploration · soldiers · sci-fi · space-opera · space-travel · galactic-empire · military · first-contact · space · violent-conflict · adult · war · ai

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The Ixan Universe

by Scott Bartlett

3.94 · 54 ratings

space · audiobook · galactic-empire · book · space-fleet · adult · violent-conflict · military · space-opera · soldiers · sci-fi · fiction · colonization · invasion · first-contact · aliens · hard-sci-fi · supernatural · space-travel · action-adventure

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Omega War

by Jason Córdova

4.45 · 80 ratings

invasion · military · adult · literary-fiction · space · aliens · action-adventure · exploration · fiction · space-travel · soldiers · colonization · galactic-empire · first-contact · sci-fi · space-fleet · book · violent-conflict · space-opera · friendship

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War Wolves

by Jonathan Yanez

4.20 · 20 ratings

violent-conflict · space · space-fleet · adult · military · first-contact · space-travel · space-opera · soldiers · sci-fi · aliens · exploration · fiction · colonization · book · invasion · galactic-empire · action-adventure · genetic-engineering · audiobook

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The Eurynome Code

by K. Gorman

4.27 · 22 ratings

space · book · space-opera · sci-fi · violent-conflict · adult · military · space-fleet · female-author · first-contact · fiction · galactic-empire · genetic-engineering · audiobook · colonization · space-travel · soldiers · action-adventure · aliens · female-mc

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Lunar Free State

by John E. Siers

4.40 · 15 ratings

first-contact · literary-fiction · book · invasion · action-adventure · aliens · exploration · colonization · fiction · space-travel · space-opera · galactic-empire · soldiers · sci-fi · violent-conflict · space · space-fleet · military · war · adult

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Alpha Alien

by Flora Dare

3.37 · 19 ratings

sci-fi · adult · aliens · fiction · romance · steamy · paranormal · contemporary · inter-galactic · book · space · soldiers · space-travel · military · first-contact · violent-conflict · space-fleet · fated-mates · action-adventure · humor

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Jim Cartwright at Large

by Mark Wandrey

4.45 · 11 ratings

military · book · literary-fiction · invasion · aliens · action-adventure · exploration · fiction · colonization · galactic-empire · space-travel · soldiers · space-fleet · adult · violent-conflict · space · sci-fi · first-contact · apocalyptic · horror

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Blackstone Fortress

by Darius Hinks

3.73 · 11 ratings

fiction · sci-fi · adult · dystopia · violent-conflict · military · soldiers · aliens · exploration · colonization · supernatural · book · invasion · space-fleet · genetic-engineering · space · first-contact · galactic-empire · space-travel · space-opera

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