Ringworld is a 1970 science fiction novel by Larry Niven, set in his Known Space universe and considered a classic of science fiction literature. It is followed by three sequels, preceded by four prequels, and ties into numerous other books set in Known Space. Ringworld won the Hugo Award in 1970, as well as both the Nebula Award and Locus Award in 1971.
Read more about Ringworld: Plot Summary, Reception, Concepts, Errors, References To Ringworld, Film, In Other Works