For decades, the spacefaring species of Known Space have battled over the largest artifactNand grandest prizeNin the galaxy: the all-but-limitless resources and

A brand-new novel set in Niven's Known Space, two hundred years before the discovery of the Ringworld.

Winner of the Hugo and Nebula Awards for best novel Four travelers come to the ringworld. . . Louis Wu: human and old; bored with having lived too fully for far

Winner of the 2019 Phi Beta Kappa Award for Science "A valuable perspective on the most important problem of our time." —Adam Becker, NPR Light of the Stars t

Fleeing the supernova chain reaction at the galactic core, the Puppeteers of the Fleet of Worlds seek a way to survive among enemies and crises.