The year is 2850, and Louis Wu is bored. Humanity has spanned the stars, yet adventure feels out of reach—until he is recruited by Nessus, a two-headed alien with a ship unlike any other.
Alongside Teela, a woman bred for improbable luck, and Speaker-to-Animals, a ferocious feline-like warrior, Louis sets out to explore a colossal mystery: the Ringworld. A massive artificial ring encircling a sun, it holds three million times the surface area of Earth. Its origins are unknown. Its secrets are deadly.
What begins as exploration quickly becomes survival. The Ringworld is crumbling, and the travelers must navigate its dangers to escape.
Winner of both the Hugo and Nebula Awards, Ringworld is a cornerstone of hard science fiction.
