Crashlander Beowulf Shaeffer has long been one of the most popular characters in Known Space. Now, for the first time ever, Larry Niven brings together all the Beowulf Shaeffer stories-including a brand-new one-in one long tale of exploration and adventure! PLUS-an all-new framing story that pulls together all of Beowulf Shaeffer's adventures and allows Shaeffer and his family to make a clean start at life once and for all!

Crashlander Beowulf Shaeffer has long been one of the most popular characters in Known Space. Now, for the first time ever, Larry Niven brings together all the Beowulf Shaeffer stories-including a brand-new one-in one long tale of exploration and adventure! PLUS-an all-new framing story that pulls together all of Beowulf Shaeffer's adventures and allows Shaeffer and his family to make a clean start at life once and for all!

World of Ptavvs is a science fiction novel by Larry Niven, first published in 1966 and set in his Known Space universe. It was Niven's first published novel and is based on a 1965 short story of the same name.

World of Ptavvs is a science fiction novel by Larry Niven, first published in 1966 and set in his Known Space universe. It was Niven's first published novel and is based on a 1965 short story of the same name.