The Sleepers War
by Jonathan Maberry
4.17 · 6 ratings
abuse · fiction · aliens · mystery · exploration · action-adventure · invasion · war · crime · book · betrayal · first-contact · audiobook · military · space-fleet · adult · death · space · genetic-engineering · violent-conflict
The Sleepers War: Similar series
Starship's Mage: Red Falcon
by Glynn Stewart
4.36 · 51 ratings
space-opera · aliens · exploration · fiction · invasion · action-adventure · war · book · audiobook · military · magic · adult · space-fleet · space · violent-conflict · soldiers · sci-fi · space-travel · urban-fantasy · mystery
All books in this series ❯
First Colony
by Ken Lozito
4.19 · 153 ratings
space · violent-conflict · invasion · book · aliens · exploration · fiction · soldiers · sci-fi · space-opera · first-contact · military · adult · colonization · space-travel · audiobook · war · action-adventure · space-fleet · mystery
All books in this series ❯
The Human Division
by John Scalzi
4.07 · 243 ratings
adult · violent-conflict · military · space-opera · space-travel · sci-fi · fiction · aliens · space · soldiers · humor · action-adventure · exploration · war · genetic-engineering · audiobook · galactic-empire · colonization · book · first-contact
All books in this series ❯
Doom Star
by Vaughn Heppner
3.92 · 104 ratings
dystopia · genetic-engineering · space · galactic-empire · colonization · post-apocalyptic · invasion · book · military · space-fleet · adult · violent-conflict · soldiers · sci-fi · space-opera · fiction · action-adventure · aliens · space-travel · exploration
All books in this series ❯
Extinction Wars
by Vaughn Heppner
4.07 · 72 ratings
book · first-contact · invasion · action-adventure · aliens · exploration · colonization · fiction · space-opera · galactic-empire · space-travel · soldiers · sci-fi · violent-conflict · space · space-fleet · adult · military · audiobook · war
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 ❯
Shadow of Terra
by Glynn Stewart
4.41 · 41 ratings
first-contact · audiobook · military · space-fleet · adult · violent-conflict · space · soldiers · galactic-empire · sci-fi · space-travel · space-opera · aliens · exploration · action-adventure · fiction · invasion · war · book
All books in this series ❯
Planetside
by Michael Mammay
3.98 · 41 ratings
violent-conflict · adult · military · first-contact · space-opera · sci-fi · mystery · aliens · exploration · fiction · war · space · audiobook · political-intrigue · conspiracies · book · law-enforcement · space-travel · soldiers · action-adventure
All books in this series ❯
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
All books in this series ❯
Lost Starship
by Vaughn Heppner
4.24 · 155 ratings
military · space-fleet · adult · genetic-engineering · violent-conflict · soldiers · galactic-empire · space-opera · colonization · aliens · fiction · action-adventure · invasion · book · space · sci-fi · audiobook · space-travel · exploration · ai
All books in this series ❯
Crimson Worlds Refugees
by Jay Allan
4.29 · 60 ratings
exploration · fiction · soldiers · galactic-empire · sci-fi · space-travel · space-opera · first-contact · audiobook · military · space-fleet · adult · violent-conflict · space · invasion · book · colonization · aliens · action-adventure · war
All books in this series ❯
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
All books in this series ❯
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
All books in this series ❯
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
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 ❯
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
All books in this series ❯
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
All books in this series ❯
The Ixan Universe
by Scott Bartlett
3.94 · 54 ratings
fiction · soldiers · sci-fi · space-opera · military · adult · space-fleet · violent-conflict · book · galactic-empire · audiobook · space · hard-sci-fi · aliens · first-contact · invasion · colonization · action-adventure · space-travel · supernatural
All books in this series ❯
Aurora Renegades
by G.S. Jennsen
4.46 · 28 ratings
action-adventure · aliens · exploration · fiction · military · first-contact · violent-conflict · space-fleet · adult · soldiers · sci-fi · space-travel · space-opera · colonization · invasion · book · audiobook · space · cyberpunk · utopia
All books in this series ❯
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
All books in this series ❯
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
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 ❯
Astra Militarum
by Victoria Hayward
4.11 · 19 ratings
violent-conflict · fiction · sci-fi · military · adult · book · action-adventure · genetic-engineering · invasion · colonization · aliens · exploration · soldiers · galactic-empire · first-contact · audiobook · space-fleet · space · war · grim-dark
All books in this series ❯