The Crimson Deathbringer Trilogy: Similar romance series

Duchy of Terra

by Glynn Stewart

4.40 · 65 ratings

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

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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 A.I.

by Vaughn Heppner

4.33 · 117 ratings

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

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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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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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Merkiaari Wars

by Mark E. Cooper

4.05 · 72 ratings

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

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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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Holy War

by Rick Partlow

4.46 · 46 ratings

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

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The Terran Fleet Command Saga

by Tori L. Harris

4.29 · 69 ratings

aliens · exploration · colonization · fiction · book · technothriller · invasion · post-apocalyptic · genetic-engineering · space · space-fleet · adult · audiobook · military · violent-conflict · first-contact · space-travel · space-opera · galactic-empire · soldiers

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Ascension

by Ken Lozito

4.28 · 46 ratings

aliens · fiction · book · invasion · adult · first-contact · violent-conflict · military · space-opera · sci-fi · exploration · soldiers · cyberpunk · space · audiobook · space-travel · action-adventure · space-fleet · technology · ai

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Galactic Empire Wars

by Raymond L. Weil

4.19 · 54 ratings

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

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The Revelations Cycle

by Chris Kennedy

4.30 · 102 ratings

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

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The Theogony

by Chris Kennedy

3.95 · 27 ratings

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

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The Ixan Prophecies

by Scott Bartlett

4.00 · 36 ratings

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

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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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Freedom's Fire

by Bobby Adair

4.10 · 52 ratings

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

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The Resistance

by Nathan Hystad

4.33 · 24 ratings

space-opera · colonization · aliens · fiction · action-adventure · invasion · war · time-travel · book · audiobook · adult · violent-conflict · space · sci-fi · supernatural · first-contact · military · space-fleet · male-mc · soldiers

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Valerie’s Elites

by Justin Sloan

4.51 · 31 ratings

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

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Prince of Britannia Saga

by Fred Hughes

4.43 · 23 ratings

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

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The Pax Humana Saga

by Endi Webb

3.97 · 34 ratings

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

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Amaranthe

by G.S. Jennsen

4.32 · 122 ratings

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

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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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