Ringworld

The ' (1970–2004), by science fiction author Larry Niven, is a part of his Known Space set of stories. Its backdrop is the Ringworld, a giant artifact 600 million miles in circumference around a sun. The series is composed of four standalone science fiction novels, the original award-winning book and its three subsequent sequels: 1970: Ringworld 1980: The Ringworld Engineers 1996: The Ringworld Throne 2004: Ringworld's Children The core series was developed with three side series of prequels set in the same Ringworld universe, and written in collaboration: 1988–2009: Man-Kzin Wars (by various edited by Niven) 2007–2010: Fleet of Worlds (by Niven and Edward M. Lerner) 2010-2011: Juggler of Worlds (by Niven and Edward M. Lerner)

Conversion of hardcopy paperback originally owned bu Boston Public Library. ePub version lacks material that was originally on the first page of many chapters, resulting in numerous discontinuities in the story.

From back cover Del Rey paperback May 1997: Come back to the Ringworld... the most astonishing feat of engineering ever encountered. A place of untold technological wonders, home to a myriad humanoid races, and world of some of the most beloved science-fiction stories ever written! The human, Louis Wu; the puppeteer known as the Hindmost; Acolyte, so of the Kzin called Chmeee... legendary beings brought together once again in the defense of the Ringworld. Something is going on with the Protectors. Incoming spacecraft are being destroyed before they can reach the Ringworld. Vampires are massing. And the Ghouls have their own agenda -- if anyone dares approach them to learn. Each race on the Ringworld has always had its own Protector. Now it looks as if the Ringworld itself needs a Protector. But who will sit on the Ringworld Throne?