Ringworld
Larry Niven
Ringworld (1)
The Ringworld Throne
The Patchwork Girl
The Draco Tavern
Ringworld's Children
The Smoke Ring
N-Space
Fleet of Worlds
Destroyer of Worlds
The Burning Tower
Destiny's Road
A World Out of Time
The World of PTAVVS
The Ringworld engineers
Tales of Known Space
Man-Kzin Wars IX
Bookwyrm
Footfall
Larry Niven & Jerry Pournelle