Anniversary Day Saga: Similar romance series

Old Man's War

by John Scalzi

4.02 · 552 ratings

space · fiction · sci-fi · space-opera · book · audiobook · aliens · military · adult · violent-conflict · colonization · war · action-adventure · space-travel · humor · soldiers · genetic-engineering · galactic-empire · exploration · politics

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Lost Colonies Trilogy

by B.V. Larson

4.05 · 53 ratings

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

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The Human Division

by John Scalzi

4.07 · 243 ratings

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

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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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Planetside

by Michael Mammay

3.98 · 41 ratings

book · conspiracies · political-intrigue · audiobook · space · war · aliens · exploration · fiction · mystery · sci-fi · space-opera · first-contact · military · adult · violent-conflict · invasion · colonization · suspense · crime

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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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Indian Hill

by Mark Tufo

4.49 · 102 ratings

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

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The Terran Fleet Command Saga

by Tori L. Harris

4.29 · 69 ratings

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

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The Last Hunter

by J.N. Chaney

4.44 · 127 ratings

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

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The Terra Nova Chronicles

by Richard Fox

4.19 · 41 ratings

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

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The Siege of Terra

by Dan Abnett

4.18 · 116 ratings

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

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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 Ixan Prophecies

by Scott Bartlett

4.00 · 36 ratings

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

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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

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

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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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Retrieval Artist

by Kristine Kathryn Rusch

3.97 · 147 ratings

fiction · adult · sci-fi · book · mystery · space-opera · space · audiobook · crime · aliens · action-adventure · law-enforcement · first-contact · space-travel · colonization · exploration · female-author · noir · genetic-engineering · galactic-empire

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Aurora Renegades

by G.S. Jennsen

4.46 · 28 ratings

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

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Amaranthe

by G.S. Jennsen

4.32 · 122 ratings

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

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Eternal Frontier

by Anthony J. Melchiorri

4.18 · 33 ratings

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

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