More like Nebula Awards 23

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RadchaaiUniverse
universe11 books2012
Space opera, about political intrigue, set in other star systems.
“Civilization is what the Radch calls itself, and civilization is a courtesy extended at gunpoint.”
from the catalogue
Start with Ancillary Justice →
includes Imperial Radch
Imperial EarthNovel
Arthur C. Clarkestandalone novel1975
Hard science fiction, about cloning and space colonization, set in outer planets & moons.
“The plot follows the protagonist, Duncan Makenzie, on a trip to Earth from his home on Titan, in large part as a diplomatic visit to the U.S. for its quincentennial in 2276, but also to have a clone of himself produced.”
from the catalogue
Implied SpacesNovel
Walter Jon Williamsstandalone novel2008
Space opera, challenging in tone, about virtual reality, set in other star systems.
A Different LightNovel
Elizabeth A. Lynnstandalone novel1978
Space opera, bittersweet in tone, about loneliness.
“Twenty if he stayed in space-normal, where his disease could be treated.”
from the catalogue
Ender's GameUniverse
universe39 books1977
Science fiction, set in far future.
“To beat your enemy you must first understand him so completely that you love him — and in the instant you love him, you destroy him.”
from the catalogue
Start with Ender's Game →
includes Ender Wiggin, Ender's Shadow, Fleet School, First Formic War, Second Formic War
The Sirens of TitanNovel
Kurt Vonnegut & Jr.standalone novel1959
Space opera, funny in tone, about aliens, set in mars.