Return of the Aghyrians
by Patty Jansen
3.56 · 16 ratings
space-opera · galactic-empire · action-adventure · fiction · book · adult · colonization · violent-conflict · first-contact · death · genetic-engineering · magic · journey · space · sci-fi · paranormal · coming-of-age · assassins · political-intrigue · urban-fantasy
Return of the Aghyrians: Similar series
Legacy Fleet Trilogy
by Nick Webb
4.10 · 89 ratings
action-adventure · supernatural · soldiers · sci-fi · galactic-empire · space-opera · first-contact · space-travel · military · audiobook · adult · space-fleet · space · violent-conflict · invasion · war · book · technothriller · colonization · exploration
All books in this series ❯
Dune Universe
by Frank Herbert
3.83 · 621 ratings
space · sci-fi · space-opera · fiction · action-adventure · book · audiobook · epic · literary · classics · adult · galactic-empire · male-author · violent-conflict · war · colonization · religion · spirituality · philosophy · historical
All books in this series ❯
Undying Mercenaries
by B.V. Larson
4.28 · 383 ratings
war · aliens · soldiers · fiction · sci-fi · space-opera · military · violent-conflict · space-fleet · adult · invasion · book · colonization · galactic-empire · audiobook · space · first-contact · space-travel · hard-sci-fi · exploration
All books in this series ❯
Legends of Dune
by Brian Herbert
3.70 · 109 ratings
adult · sci-fi · space-opera · fiction · book · audiobook · space · epic · literary · classics · action-adventure · war · male-author · violent-conflict · galactic-empire · colonization · robots · 21st-century · dystopia · philosophy
All books in this series ❯
The Adventures of a Xeno-Archaeologist
by Jenny Schwartz
4.33 · 84 ratings
adult · first-contact · military · space-opera · sci-fi · action-adventure · aliens · fiction · futuristic · space · ai · supernatural · exploration · super-powered · cyberpunk · galactic-empire · book · romance · space-fleet · space-travel
All books in this series ❯
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
All books in this series ❯
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
All books in this series ❯
Drop Trooper
by Rick Partlow
4.38 · 152 ratings
military · space-fleet · adult · violent-conflict · soldiers · galactic-empire · colonization · aliens · fiction · invasion · book · space · sci-fi · space-travel · action-adventure · exploration · first-contact · space-opera · war · audiobook
All books in this series ❯
Hellhole Trilogy
by Brian Herbert
3.78 · 41 ratings
space · adult · military · audiobook · horror · violent-conflict · space-opera · space-travel · galactic-empire · sci-fi · action-adventure · exploration · fiction · aliens · colonization · book · male-author · space-fleet · drama · war
All books in this series ❯
Backyard Starship
by J.N. Chaney
4.57 · 202 ratings
violent-conflict · military · book · fiction · sci-fi · space-opera · soldiers · space-fleet · space · adult · aliens · action-adventure · colonization · galactic-empire · invasion · genetic-engineering · audiobook · pulp · ai · young-adult
All books in this series ❯
Crimson Worlds
by Jay Allan
4.11 · 172 ratings
fiction · war · violent-conflict · adult · military · sci-fi · book · space · space-opera · soldiers · aliens · space-fleet · audiobook · first-contact · galactic-empire · action-adventure · exploration · invasion · space-travel · colonization
All books in this series ❯
Space Troopers
by Jamie McFarlane
4.41 · 29 ratings
space-travel · space-opera · soldiers · sci-fi · violent-conflict · space · space-fleet · adult · military · book · exploration · fiction · galactic-empire · audiobook · action-adventure · colonization · technothriller · invasion · aliens
All books in this series ❯
Wholesale Slaughter
by Rick Partlow
4.41 · 56 ratings
adult · space · space-fleet · violent-conflict · military · galactic-empire · space-travel · soldiers · exploration · fiction · action-adventure · sci-fi · colonization · book · audiobook · space-opera · supernatural · war · invasion · genetic-engineering
All books in this series ❯
Rise of the Empire
by Ivan Kal
4.37 · 91 ratings
aliens · fiction · book · space · adult · space-fleet · military · violent-conflict · litrpg · space-opera · sci-fi · colonization · genetic-engineering · space-travel · war · invasion · galactic-empire · royalty · action-adventure · first-contact
All books in this series ❯
Dawn of Fire
by Guy Haley
3.97 · 37 ratings
space · exploration · fiction · soldiers · sci-fi · military · space-fleet · adult · violent-conflict · book · genetic-engineering · grim-dark · aliens · action-adventure · first-contact · invasion · colonization · galactic-empire · space-opera · audiobook
All books in this series ❯
Star Force: Phase 2
by Aer-ki Jyr
4.42 · 262 ratings
aliens · action-adventure · fiction · military · violent-conflict · sci-fi · space-opera · book · space · space-fleet · galactic-empire · adult · soldiers · invasion · colonization · exploration · space-travel · young-adult · immortality · dystopia
All books in this series ❯
The Delphic Dame
by Jenny Schwartz
4.33 · 21 ratings
first-contact · adult · sci-fi · space-travel · space-opera · exploration · fiction · aliens · super-powered · space · galactic-empire · colonization · book · violent-conflict · action-adventure · cyberpunk · supernatural · invasion · outlaws · futuristic
All books in this series ❯
The Pike Chronicles
by G.P. Hudson
4.00 · 26 ratings
fiction · action-adventure · soldiers · galactic-empire · sci-fi · space-travel · space-opera · first-contact · military · adult · violent-conflict · space · invasion · book · colonization · aliens · exploration · supernatural
All books in this series ❯
Gateway to the Galaxy
by Jonathan Yanez
4.23 · 36 ratings
fiction · sci-fi · military · adult · violent-conflict · humor · super-powered · soldiers · space-opera · space · aliens · first-contact · invasion · book · supernatural · colonization · galactic-empire · action-adventure · space-fleet · genetic-engineering
All books in this series ❯
The Eurynome Code
by K. Gorman
4.27 · 22 ratings
adult · book · space · fiction · sci-fi · space-opera · military · female-author · violent-conflict · first-contact · space-fleet · colonization · galactic-empire · audiobook · genetic-engineering · female-mc · action-adventure · aliens · soldiers · space-travel
All books in this series ❯
Lunar Free State
by John E. Siers
4.40 · 15 ratings
literary-fiction · book · invasion · aliens · exploration · fiction · action-adventure · colonization · galactic-empire · space-opera · space-travel · soldiers · sci-fi · space-fleet · space · violent-conflict · first-contact · military · war · adult
All books in this series ❯
Fated Mates of the Titan Empire
by Tammy Walsh
4.15 · 27 ratings
humor · paranormal · sci-fi · galactic-empire · space-opera · space-travel · first-contact · adult · genetic-engineering · violent-conflict · invasion · romance · book · colonization · aliens · fiction · action-adventure · military · new-adult · suspense
All books in this series ❯
Tales of Cinnamon City
by Peter James West
3.75 · 12 ratings
space-fleet · adult · dystopia · genetic-engineering · space · violent-conflict · military · galactic-empire · space-opera · soldiers · sci-fi · fiction · action-adventure · colonization · book · post-apocalyptic · ai · epic · war · mystery
All books in this series ❯
Chronicles of the Second Interstellar Empire of Mankind
by Robert I. Katz
4.25 · 4 ratings
colonization · fiction · book · military · genetic-engineering · violent-conflict · space · adult · sci-fi · galactic-empire · space-opera · action-adventure · box-set · space-travel · urban · hard-sci-fi · male-mc · soldiers · space-fleet · politics
All books in this series ❯