More like Dark Imperium

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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, First Formic War, Second Formic War, Fleet School
Forever WarSeries
series10 books1972
Science fiction and military science fiction, set in far future and space.
Start with Hero →
DuneUniverse
universe78 books1963
About political intrigue.
“The desert planet, where empire runs on a single substance: the spice melange, which folds space, prolongs life, and unlocks prescience, and which exists nowhere else in the known universe.”
from the catalogue
Start with Dune →
includes Dune, Dune Prequels, Heroes of Dune, Dune Sequels, Background of the Dune Universe
Aton/Piers Anthony's Worlds of ChthonSeries
series4 books1967
Science fiction, dark in tone, set in far future.
Start with Chthon →
ArmorNovel
John Steakleystandalone novel1984
About aliens and madness.
CoDominiumUniverse
universe98 books1971
Science fiction and military science fiction, set in other star systems and far future.
“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, War World, Falkenberg's Legion, Laurie Jo Hansen