Hard SF
1334 booksEvery hard sf book in our directory, with content ratings, trigger warnings, and age recommendations.
What Rough Beast
R
Believers' World
PG-13
The Year of the Rats
PG-13
The Gold Bug Variations
PG-13
Angel Kagoule
PG-13
Autopsy for a Cosmonaut
PG-13Blow My Mind
Blow My Mind
PG-13
B.E.A.S.T.
PG-13Twenty Thousand Leagues Under the Sea
Twenty Thousand Leagues Under the Sea
PG-13Fifteen Months in the Moon: Giving a Full Description of its Inhabitants; Their Appearance; Customs; Laws; Modes of Locomotion; Animals; Plants; &c.
Fifteen Months in the Moon: Giving a Full Description of its Inhabitants; Their Appearance; Customs; Laws; Modes of Locomotion; Animals; Plants; &c.
PG-13
Egyptians
RA Trip to the Moon: Containing an Account of the Island of Noibla, Its Inhabitants, Religious and Political Customs, &c.
A Trip to the Moon: Containing an Account of the Island of Noibla, Its Inhabitants, Religious and Political Customs, &c.
PG-13The Flying Boys; or, Three Thousand Miles on Wings
The Flying Boys; or, Three Thousand Miles on Wings
PG-13Behemoth: ß-Max
Behemoth: ß-Max
GTom Swift and His House on Wheels, or, A Trip Around the Mountain of Mystery
Tom Swift and His House on Wheels, or, A Trip Around the Mountain of Mystery
PG
Tom Swift in the Land of Wonders
PGTom Swift and His Great Oil Gusher, or, The Treasure of Goby Farm
Tom Swift and His Great Oil Gusher, or, The Treasure of Goby Farm
PG
Tom Swift Among the Fire Fighters
GTom Swift and His Great Searchlight
Tom Swift and His Great Searchlight
G
Tom Swift in Captivity
G
Tom Swift in the City of Gold
PG
Tom Swift in the Caves of Ice
PG
Tom Swift and His Sky Racer
G
Tom Swift and His Air Glider
PGTravel Scholarships
Travel Scholarships
PG-13We, the Women
We, the Women
PG-13Talons of Scorpio
Talons of Scorpio
PG-13Runaway
Runaway
RPhoton: Thieves of Light
Photon: Thieves of Light
R
The Screaming Tower
PG-13