More like Preservation

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Alliance-UnionUniverse
universe173 books1976
Science fiction, set in far future.
“Around that spine cluster the merchanter novels of trader Families, the Faded Sun trilogy of human envoys among the martial alien Mri, and the Chanur books, narrated from the hierarchical, whiskered viewpoint of the hani.”
from the catalogue
Start with Heavy Time →
includes Company Wars, Chanur, Mri Wars, Hanan Rebellion, Era of Rapprochement, Age of Exploration, The Hinder Stars, Unionside
Space BeagleSeries
series5 books1939
completed
About aliens, set in spaceship.
Start with Black Destroyer →
Known SpaceUniverse
universe142 books1964
About aliens.
“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
Berserker (Fred Saberhagen)Series
series59 books1963
About robots and artificial intelligence.
Start with Berserker →
The Final ArchitectureSeries
series6 books2021
About aliens.
“Eighty years ago, Earth was destroyed by an alien 'Architect'.”
from the catalogue
Start with Shards of Earth →
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, Laurie Jo Hansen, Falkenberg's Legion, War World