Adult 18+ sci-fi books

31370 books

A Civil Campaign
A Civil Campaign
Lois McMaster Bujold
PG-13
Pegasus and the Rise of the Titans
Pegasus and the Rise of the Titans
Kate O'Hearn
PG-13
Cool Hand
Cool Hand
Mark Henwick
PG-13
Protector
Protector
Christine Pope
PG-13
Omega Gray
Omega Gray
Seb Doubinsky
PG-13
Starship Bloopers
Starship Bloopers
John Kloepfer
PG-13
Spaced Out
Spaced Out
Stuart Gibbs
PG-13
Unclear Skies
Unclear Skies
Jason LaPier
PG-13
In Danger's Path
In Danger's Path
W. E. B. Griffin
R
Invasion: Being the Personal Recollections of What Happened to Our Own Family and to Some of Our Friends During the First Forty-Eight Hours of That Terrible Incident in Our History Which Is Now Known as the Great Invasion and How We Escaped with Our Lives and the Strange Adventures Which Befell Us Before the Nazis Were Driven from Our Territories
Invasion: Being the Personal Recollections of What Happened to Our Own Family and to Some of Our Friends During the First Forty-Eight Hours of That Terrible Incident in Our History Which Is Now Known as the Great Invasion and How We Escaped with Our Lives and the Strange Adventures Which Befell Us Before the Nazis Were Driven from Our Territories
Hendrik Willem van Loon
PG-13
Battle
Battle
Michelle West
PG-13
Shirewode
Shirewode
J Tullos Hennig
PG-13
Enticed
Enticed
Monique Snyman
PG-13
Originator
Originator
Joel Shepherd
PG-13
Light of Dawn
Light of Dawn
Vannetta Chapman
PG-13
Contagious Chaos
Contagious Chaos
Emily Goodwin
PG-13
The Truth Is Contagious
The Truth Is Contagious
Emily Goodwin
PG-13
Emaculum
Emaculum
Roberto Calas
PG-13
An Oath of the Kings
An Oath of the Kings
Valerie Zambito
PG-13
Death of Empires
Death of Empires
Glynn James; Michael Stephen Fuchs
PG-13
Devoted in Death
Devoted in Death
J. D. Robb
PG-13
Highland Troth
Highland Troth
Willa Blair
PG-13
Brotherhood in Death
Brotherhood in Death
J. D. Robb
PG-13
The Curious Lobster
The Curious Lobster
Richard W. Hatch
PG-13
Rise of the Titans
Rise of the Titans
Kate O'Hearn
PG-13
Fire and Ice
Fire and Ice
Johannes V. Jensen
PG-13
Third Player
Third Player
Warren James Palmer
R
Oversoul Seven and the Museum of Time
Oversoul Seven and the Museum of Time
Jane Roberts
PG-13
The Five Star Republic
The Five Star Republic
Andrew Enstice; Janeen Webb
PG-13
The Deadly Race to Space: Russia
The Deadly Race to Space: Russia
Elizabeth Singer Hunt
PG-13