The Expanding Universe: Similar romance series

The Lost Fleet: Beyond the Frontier

by Jack Campbell

4.07 · 151 ratings

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

All books in this series ❯

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

All books in this 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

All books in this series ❯

Duchy of Terra Universe

by Glynn Stewart

4.41 · 170 ratings

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

All books in this series ❯

The Way

by Greg Bear

3.80 · 70 ratings

fiction · action-adventure · adult · sci-fi · space-opera · time-travel · aliens · hard-sci-fi · military · violent-conflict · post-apocalyptic · audiobook · space · alternate-history · first-contact · historical · space-fleet · male-author · 20th-century · classics

All books in this series ❯

The Adventures of a Xeno-Archaeologist

by Jenny Schwartz

4.33 · 84 ratings

space · futuristic · ai · supernatural · adult · military · first-contact · space-opera · sci-fi · action-adventure · aliens · fiction · cyberpunk · galactic-empire · book · romance · super-powered · exploration · space-fleet · space-travel

All books in this series ❯

War Eternal

by M.R. Forbes

4.19 · 151 ratings

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

All books in this series ❯

Trade Pact Universe

by Julie E. Czerneda

3.94 · 44 ratings

time-travel · female-author · first-contact · adult · sci-fi · space-opera · female-mc · psychics · action-adventure · aliens · fiction · space · paranormal · anthologies · romance · military · violent-conflict · alpha-mc · dystopia · colonization

All books in this series ❯

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

All books in this series ❯

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

All books in this series ❯

Moon Wreck

by Raymond L. Weil

4.02 · 42 ratings

military · invasion · space-fleet · space · adult · aliens · exploration · fiction · sci-fi · space-opera · violent-conflict · dystopia · survival · anthologies · action-adventure · ai · colonization · first-contact · war · space-travel

All books in this series ❯

Star Trek: Mirror Universe

by Mike Sussman

3.97 · 26 ratings

anthologies · invasion · violent-conflict · aliens · action-adventure · fiction · sci-fi · space-opera · first-contact · military · adult · genetic-engineering · space · journey · dystopia

All books in this series ❯

Space Colony One

by J.J. Green

4.14 · 22 ratings

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

All books in this series ❯

Rise of the Free Fleet

by Michael Chatfield

4.14 · 42 ratings

fiction · book · military · first-contact · space · violent-conflict · adult · space-fleet · soldiers · sci-fi · space-opera · action-adventure · aliens · litrpg · invasion · urban-fantasy · apocalyptic · war

All books in this series ❯

Star Trek: New Earth

by Diane Carey

3.65 · 41 ratings

military · anthologies · invasion · aliens · fiction · action-adventure · colonization · space-opera · sci-fi · space-fleet · violent-conflict · space · adult · hard-sci-fi · young-adult · technology

All books in this series ❯

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

All books in this series ❯

Independence Day

by Dean Devlin

3.70 · 39 ratings

sci-fi · action-adventure · fiction · aliens · invasion · book · military · violent-conflict · adult · futuristic · space · cyberpunk · post-apocalyptic · time-travel · first-contact · space-fleet · super-powered · contemporary · male-mc · alternate-history

All books in this series ❯

Asterion Noir

by G.S. Jennsen

4.39 · 18 ratings

adult · space-fleet · invasion · violent-conflict · first-contact · horror · military · romance · space-opera · space-travel · sci-fi · aliens · exploration · fiction · action-adventure · futuristic · cyberpunk · space · genetic-engineering · audiobook

All books in this series ❯

Gateway to the Galaxy

by Jonathan Yanez

4.23 · 36 ratings

fiction · military · adult · violent-conflict · sci-fi · space-opera · space · humor · super-powered · soldiers · supernatural · colonization · invasion · book · galactic-empire · aliens · first-contact · action-adventure · space-fleet · anthologies

All books in this series ❯

Beyond the Stars: Space Opera Anthologies

by Lindsay Buroker

3.96 · 26 ratings

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

All books in this series ❯

Cygnus

by Craig Martelle

4.29 · 14 ratings

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

All books in this series ❯

Carrie Hatchett, Space Adventurer

by J.J. Green

3.75 · 16 ratings

space · action-adventure · fiction · humor · sci-fi · violent-conflict · aliens · exploration · space-travel · comedy · first-contact · anthologies · invasion · military · space-fleet · adult · galactic-empire · lgbtq · colonization · young-adult

All books in this series ❯