A comprehensive guide to one of science fiction's most exciting created universes.

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 too many years. Seeking a challenge, and all too capable of handling it. Nessus: a trembling coward, a puppeteer with a built-in survival pattern of nonviolence. Except that this particular puppeteer is insane. Teela Brown: human; a wide-eyed youngster with no allegiances, no experience, no abilities. And all the luck in the world. Speaker-To-Animals: kzin; large, orange-furred, and carnivorous. And one of the most savage life-forms known in the galaxy. Why did these disparate individuals come together? How could they possibly function together? And where, in the name of anything sane, were they headed?

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, son 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? “Niven’s work has been an intriguing and consistent universe, and this book is the keystone of the arch. . . . [His] technique is wonderfully polished, his characters and their situations are nicely drawn . . . wraps up (maybe) a corner of a very interesting universe.”—San Diego Union-Tribune

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

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.

Allan Carpenter escaped from hell once but remained haunted by what he saw and endured. He has now returned, on a mission to liberate those souls unfairly tortured and confined. Partnering with the legendary poet and suicide, Sylvia Plath, Carpenter is a modern-day Christ who intends to harrow hell and free the damned. But now that he's returned to this Dantesque Inferno, can he ever again leave? At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.