Quadrail
by Timothy Zahn
3.85 · 88 ratings
crime · book · espionage · invasion · aliens · fiction · action-adventure · mystery · political-intrigue · space-opera · sci-fi · suspense · space · violent-conflict · first-contact · young-adult · law-enforcement · noir · adult
Quadrail: Similar series
Takeshi Kovacs
by Richard K. Morgan
3.97 · 158 ratings
fiction · adult · sci-fi · book · cyberpunk · mystery · action-adventure · futuristic · hard-sci-fi · crime · hard-boiled · noir · male-author · dark · space-opera · audiobook · dystopia · space · suspense · espionage
All books in this series ❯
The Kurtherian Gambit
by Michael Anderle
4.48 · 585 ratings
aliens · fiction · vampires · urban-fantasy · paranormal · action-adventure · violent-conflict · shapeshifters · genetic-engineering · space · galactic-empire · military · space-opera · book · audiobook · war · sci-fi · suspense · invasion · first-contact
All books in this series ❯
Dred Chronicles
by Ann Aguirre
4.03 · 76 ratings
assassins · space-opera · dark · sci-fi · horror · military · crime · futuristic · aliens · fiction · action-adventure · female-mc · political-intrigue · paranormal · dystopia · space · alpha-mc · book · romance · urban-fantasy
All books in this series ❯
Rho Agenda Chronological
by Richard Phillips
4.10 · 219 ratings
sci-fi · violent-conflict · action-adventure · fiction · audiobook · book · technothriller · aliens · suspense · first-contact · mystery · military · adult · invasion · space-opera · political-intrigue · espionage · politics · space · space-travel
All books in this series ❯
Moon Base Alpha
by Stuart Gibbs
4.36 · 70 ratings
book · young-adult · political-intrigue · audiobook · middle-grade · space · espionage · futuristic · fiction · action-adventure · children-books · humor · mystery · sci-fi · children · law-enforcement · realistic · suspense · family · friendship
All books in this series ❯
The Rho Agenda: Inception
by Richard Phillips
4.14 · 64 ratings
action-adventure · mystery · sci-fi · assassins · political-intrigue · first-contact · military · audiobook · adult · violent-conflict · assassinations · espionage · crime · book · technothriller · fiction · conspiracies · suspense · politics · 21st-century
All books in this series ❯
Spin
by Robert Charles Wilson
3.74 · 81 ratings
book · time-travel · invasion · post-apocalyptic · violent-conflict · first-contact · sci-fi · fiction · aliens · space · dystopia · audiobook · space-opera · action-adventure · apocalyptic · hard-sci-fi · futuristic · evolution · young-adult · adult
All books in this series ❯
Tao
by Wesley Chu
3.84 · 81 ratings
audiobook · espionage · fiction · aliens · action-adventure · sci-fi · book · political-intrigue · crime · spirituality · humor · alternate-history · space-fleet · male-author · first-contact · military · violent-conflict · invasion · religion · urban-fantasy
All books in this series ❯
Mission Earth
by L. Ron Hubbard
3.44 · 220 ratings
sci-fi · space-opera · satire · adult · action-adventure · fiction · humor · book · violent-conflict · hard-sci-fi · aliens · political-intrigue · space · invasion · workplace · epic · espionage · military · first-contact · space-fleet
All books in this series ❯
Quadrail
by Timothy Zahn
3.85 · 88 ratings
crime · book · espionage · invasion · aliens · fiction · action-adventure · mystery · political-intrigue · space-opera · sci-fi · suspense · space · violent-conflict · first-contact · young-adult · law-enforcement · noir · adult
All books in this series ❯
Terran Scout Fleet
by Joshua Dalzelle
4.49 · 70 ratings
book · action-adventure · fiction · colonization · space-opera · soldiers · sci-fi · space · adult · space-fleet · military · first-contact · espionage · aliens · political-intrigue · violent-conflict · war · mystery · audiobook · horror
All books in this 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 ❯
Axiom
by Tim Pratt
3.86 · 49 ratings
colonization · book · invasion · space · action-adventure · mystery · aliens · exploration · fiction · lgbtq · hard-sci-fi · violent-conflict · adult · military · first-contact · space-opera · sci-fi · ai · suspense · humor
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 ❯
Finder Chronicles
by Suzanne Palmer
4.11 · 49 ratings
aliens · fiction · action-adventure · adult · violent-conflict · sci-fi · space-opera · invasion · book · audiobook · ai · female-author · first-contact · 21st-century · space · suspense · mystery · futuristic · heist · dystopia
All books in this series ❯
Dire Earth Cycle
by Jason M. Hough
3.76 · 79 ratings
book · post-apocalyptic · sci-fi · adult · action-adventure · fiction · violent-conflict · military · apocalyptic · hard-sci-fi · aliens · zombies · audiobook · horror · space · dystopia · space-opera · first-contact · mystery · suspense
All books in this series ❯
Children of a Dead Earth
by Patrick S. Tomlinson
3.86 · 28 ratings
colonization · invasion · book · audiobook · space · dystopia · action-adventure · mystery · aliens · fiction · crime · violent-conflict · adult · sci-fi · space-opera · dying-earth · police-procedural · conspiracies · political-intrigue · humor
All books in this series ❯
The Sentinels
by Jack McKinney
3.69 · 36 ratings
action-adventure · fiction · book · military · sci-fi · war · violent-conflict · space · space-opera · politics · teens · adult · young-adult · aliens · invasion · espionage · contemporary · epic · political-intrigue · earth
All books in this series ❯
The Sibyl's War
by Timothy Zahn
3.68 · 19 ratings
action-adventure · fiction · invasion · aliens · book · first-contact · violent-conflict · space · survival · sci-fi · space-opera · young-adult · hard-sci-fi · military · space-fleet · conspiracies · political-intrigue · mystery · exploration · steampunk
All books in this series ❯
Colin Cellars First Evidence
by Ken Goddard
3.26 · 19 ratings
adult · crime · action-adventure · aliens · fiction · mystery · suspense · audiobook · book · space-opera · sci-fi · violent-conflict · outdoors · military · horror · law-enforcement · animals · warriors · politics · space
All books in this series ❯
Dead Enders
by Mike Resnick
3.09 · 11 ratings
space-opera · soldiers · sci-fi · violent-conflict · space-fleet · military · first-contact · espionage · action-adventure · aliens · exploration · fiction · galactic-empire · political-intrigue · space · book · space-travel · lgbtq · quest · genetic-engineering
All books in this series ❯
Forbidden Bonds
by Cara Bristol
4.54 · 13 ratings
aliens · action-adventure · fiction · adult · sci-fi · romance · book · betrayal · forced-proximity · crime · first-contact · kidnapping · suspense · enemies-to-lovers · life-death · survival · conspiracies · political-intrigue · domestic-drama · mystery
All books in this series ❯
Genmate Dilemma
by Cara Bristol
4.50 · 6 ratings
life-death · space-travel · sci-fi · adult · violent-conflict · first-contact · secrets · fated-mates · aliens · fiction · action-adventure · psychics · enemies-to-lovers · paranormal · suspense · genetic-engineering · contemporary · shapeshifters · book · steamy
All books in this series ❯