Quintara Marathon

by Jack L. Chalker

3.73 · 26 ratings

space-opera · adult · action-adventure · aliens · fiction · space · anthologies · sci-fi · literary · pulp · classics · hard-sci-fi

Quintara Marathon: Similar series

Xenogenesis

by Octavia E. Butler

4.25 · 151 ratings

female-author · first-contact · horror · poc-author · post-apocalyptic · classics · literary · feminism · space · dystopia · apocalyptic · lgbtq · action-adventure · afrofuturism · aliens · fiction · female-mc · poc-mc · 20th-century · sci-fi

All books in this series ❯

Galactic Milieu Trilogy

by Julian May

4.21 · 86 ratings

fiction · sci-fi · space-opera · female-author · space · post-apocalyptic · time-travel · action-adventure · aliens · paranormal · adult · cyberpunk · anthologies · hard-sci-fi · box-set · philosophy · high-school · mystery · first-contact · violent-conflict

All books in this series ❯

Gaea Trilogy

by John Varley

4.10 · 60 ratings

space · hard-sci-fi · lgbtq · wlw · female-mc · aliens · action-adventure · fiction · sci-fi · romantic-love · space-travel · space-opera · adult · violent-conflict · anthologies · invasion · audiobook · first-contact · military · cyberpunk

All books in this series ❯

The Way

by Greg Bear

3.80 · 70 ratings

action-adventure · time-travel · sci-fi · space-opera · adult · fiction · audiobook · space · post-apocalyptic · military · violent-conflict · hard-sci-fi · aliens · literary · invasion · anthologies · book · classics · 20th-century · first-contact

All books in this series ❯

Saga of the Well World

by Jack L. Chalker

3.97 · 119 ratings

aliens · fiction · action-adventure · space-opera · sci-fi · space · adult · audiobook · book · anthologies · pulp · classics · literary · religious · children-books · young-adult · ai · epic · magic · journey

All books in this series ❯

Worlds of Honor

by David Weber

3.98 · 99 ratings

sci-fi · space-opera · military · audiobook · space · violent-conflict · adult · anthologies · futuristic · war · action-adventure · fiction · space-travel · hard-sci-fi · aliens · psychics · political-intrigue · cats · espionage · animals

All books in this series ❯

Saga of the Pliocene Exile

by Julian May

4.17 · 98 ratings

fiction · adult · female-author · sci-fi · space-opera · time-travel · paranormal · action-adventure · alternate-history · historical · historical-fiction · 20th-century · epic · book · anthologies · space · aliens · invasion · dystopia · myths

All books in this series ❯

Alien Movie Novelizations

by Alan Dean Foster

3.98 · 61 ratings

action-adventure · aliens · fiction · sci-fi · horror · adult · audiobook · dystopia · space-opera · classics · literary · space · war · super-powered · military · violent-conflict · anthologies · book · time-travel · cyberpunk

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 ❯

Star Trek: The Next Generation: The Q Continuum

by Greg Cox

3.86 · 49 ratings

adult · sci-fi · space-opera · action-adventure · fiction · military · space · genetic-engineering · violent-conflict · aliens · anthologies · invasion · time-travel · box-set · new-adult · book

All books in this series ❯

Cat

by Joan D. Vinge

3.98 · 61 ratings

cyberpunk · sci-fi · fiction · cats · animals · space · book · adult · action-adventure · aliens · dystopia · young-adult · anthologies · female-author · space-opera · psychics · box-set · paranormal · political-intrigue · orphans

All books in this series ❯

Star Trek: Invasion

by L.A. Graf

3.76 · 58 ratings

sci-fi · adult · anthologies · fiction · action-adventure · space-opera · military · genetic-engineering · space · violent-conflict · invasion · aliens · horror · teens · box-set · first-contact · time-travel

All books in this series ❯

Moon Wreck

by Raymond L. Weil

4.02 · 42 ratings

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

All books in this series ❯

Worlds of Star Trek: Deep Space Nine

by Una McCormack

3.83 · 39 ratings

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

All books in this series ❯

The Prime Chronicles

by Monette Michaels

3.83 · 36 ratings

futuristic · aliens · fiction · sci-fi · adult · steamy · romance · paranormal · action-adventure · military · anthologies · suspense · space · dangerous-mc · fated-mates · warriors · space-opera · alpha-mc · war · female-mc

All books in this series ❯

Star Trek: Mirror Universe

by Mike Sussman

3.97 · 26 ratings

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

All books in this series ❯