The Amaranthine Spectrum: Similar romance series

Linesman

by S.K. Dunstall

4.13 · 60 ratings

friendship · aliens · action-adventure · fiction · war · female-author · first-contact · military · space-fleet · adult · violent-conflict · sci-fi · space-opera · invasion · book · audiobook · space · exploration · futuristic · space-travel

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Black Fleet Trilogy

by Joshua Dalzelle

4.03 · 59 ratings

aliens · fiction · soldiers · space-opera · sci-fi · audiobook · military · first-contact · violent-conflict · space · space-fleet · adult · hard-sci-fi · invasion · book · war · colonization · action-adventure · epic · futuristic

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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 Way

by Greg Bear

3.80 · 70 ratings

action-adventure · time-travel · sci-fi · space-opera · adult · fiction · audiobook · space · post-apocalyptic · military · violent-conflict · hard-sci-fi · aliens · literary · invasion · anthologies · book · classics · 20th-century · first-contact

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War Eternal

by M.R. Forbes

4.19 · 151 ratings

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

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Ascension Wars

by Jasper T. Scott

3.86 · 58 ratings

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

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Blood on the Stars

by Jay Allan

4.33 · 243 ratings

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

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Aurora Rising

by G.S. Jennsen

4.13 · 66 ratings

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

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Humanity's Fire

by Michael Cobley

3.50 · 63 ratings

space-opera · sci-fi · space · adult · book · action-adventure · fiction · violent-conflict · aliens · space-travel · epic · audiobook · invasion · male-author · military · war · futuristic · colonization · first-contact · dystopia

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Dark Space

by Jasper T. Scott

3.84 · 82 ratings

invasion · space-fleet · book · galactic-empire · audiobook · space · fiction · aliens · sci-fi · space-opera · military · violent-conflict · adult · historical · supernatural · genetic-engineering · dystopia · cyberpunk · steampunk · industrial-era

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Cade Korbin Chronicles

by Jasper T. Scott

4.35 · 35 ratings

soldiers · sci-fi · space-travel · first-contact · military · historical · adult · space-fleet · violent-conflict · industrial-era · steampunk · aliens · exploration · fiction · galactic-empire · cyberpunk · genetic-engineering · space · invasion · book

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The Lost Fleet: Outlands

by Jack Campbell

4.38 · 53 ratings

sci-fi · adult · space · space-fleet · military · violent-conflict · book · war · action-adventure · fiction · space-opera · space-travel · cyberpunk · male-author · first-contact · audiobook · invasion · aliens · time-travel · post-apocalyptic

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Forsaken Mercenary

by Jonathan Yanez

4.37 · 101 ratings

fiction · action-adventure · adult · sci-fi · book · space · violent-conflict · colonization · post-apocalyptic · space-opera · cyberpunk · genetic-engineering · aliens · industrial-era · steampunk · historical · first-contact · invasion · super-powered · military

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Shamans & Shifters Space Opera

by Jenny Schwartz

4.33 · 46 ratings

adult · romance · book · shapeshifters · paranormal · space · action-adventure · aliens · fiction · sci-fi · space-travel · space-opera · first-contact · futuristic · outlaws · magic · colonization · fae · galactic-empire · cyberpunk

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The Earthborn Trilogy

by Paul Tassi

3.96 · 26 ratings

military · audiobook · first-contact · space · violent-conflict · adult · historical · dystopia · soldiers · sci-fi · space-opera · colonization · action-adventure · fiction · aliens · invasion · post-apocalyptic · steampunk · book · industrial-era

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Daedalus

by Michael J. Martinez

3.76 · 25 ratings

aliens · action-adventure · exploration · fiction · alternate-history · industrial-era · steampunk · historical · adult · violent-conflict · historical-fiction · space-opera · sci-fi · time-travel · book · invasion · space · first-contact · military · space-travel

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Starcaster

by J.N. Chaney

4.39 · 38 ratings

action-adventure · exploration · fiction · book · steampunk · industrial-era · military · first-contact · genetic-engineering · violent-conflict · historical · adult · space-travel · space-opera · galactic-empire · audiobook · fantasy · aliens · invasion · space

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Broken Worlds

by Jasper T. Scott

4.05 · 22 ratings

violent-conflict · invasion · galactic-empire · dystopia · cyberpunk · space · genetic-engineering · industrial-era · steampunk · aliens · fiction · soldiers · sci-fi · first-contact · military · adult · historical · space-fleet · book · supernatural

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Lacuna

by David Adams

3.72 · 25 ratings

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

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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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AMP

by Stephen Arseneault

4.04 · 48 ratings

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

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OMEGA

by Stephen Arseneault

4.08 · 36 ratings

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

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SODIUM

by Stephen Arseneault

3.90 · 21 ratings

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

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