More like Collect Them All

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The Sirens of TitanNovel
Kurt Vonnegut & Jr.standalone novel1959
Set in mars.
The Hitchhiker's Guide to the GalaxyUniverse
universe18 books1979
Humor.
“The Earth is scheduled for demolition to make way for a hyperspace bypass, and honestly, nobody filed the paperwork properly.”
from the catalogue
Start with The Hitchhiker's Guide to the Galaxy →
includes Hitchhiker's Guide to the Galaxy, Dirk Gently
Starship TroopersNovel
Robert A. Heinleinstandalone novel1959
Military science fiction, about war and coming of age.
Known SpaceUniverse
universe142 books1964
Science fiction, about aliens, set in far future and space.
“Give a clever species a few centuries and a working fusion drive, and it will fill the sky with problems.”
from the catalogue
Start with Ringworld →
includes Ringworld, Fleet of Worlds, Man-Kzin Wars
Starman JonesNovel
Robert A. Heinleinstandalone novel1953
About space exploration and coming of age, set in spaceship.
“Starman Jones, a 1953 science fiction novel by Robert A. Heinlein, features a farm boy who wants to go to the stars.”
from the catalogue
CoDominiumUniverse
universe98 books1971
Military science fiction.
“The body of work runs along a few hard threads rather than one line.”
from the catalogue
Start with The Mote in God's Eye →
includes Moties, Falkenberg's Legion, War World, Laurie Jo Hansen