More like Imperium at War

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Forever WarSeries
series10 books1972
Science fiction and military science fiction, set in far future and space.
Start with Hero →
Berserker (Fred Saberhagen)Series
series59 books1963
About robots and artificial intelligence.
Start with Berserker →
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 Man-Kzin Wars, Ringworld, Fleet of Worlds
Sun EaterSeries
series36 books2018
Science fiction and space opera, dark in tone, about war, set in far future.
“The galaxy remembers him as a hero: the man who burned every last alien Cielcin from the sky.”
from the catalogue
Start with Empire of Silence →
Old Man's WarSeries
series16 books2005
Adventurous in tone.
“Sign a document at 65, saying you intend to join up 10 years later.”
from the catalogue
Start with Old Man's War →
CoDominiumUniverse
universe98 books1971
Science fiction and military science fiction, set in far future and other star systems.
“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