Opus No. Title Date Settingsort descending Publication type I.U.C. Notes
34 Gift from Earth, A September, 1968 Known Space Novel K.S. 21 (2410) Detailed description of Mt. Lookatthat and Matt Keller's psychic power: "Plateau Eyes"
90 Down in Flames January, 1969 Known Space Non-Fiction Read It Here! Destruction of Known Space, inspired by a conversation with Norman Spinrad. Never written beyond the outline phase.  Niven started writing Ringworld shortly after instead. Though this saw print in 1969, it appears much further down the list in Niven's published bibliographies.
61 Cloak of Anarchy March, 1972 Known Space Short Story K.S. 16 (2135) Read It Here! The story that led to a duel see Convention Stories
63 Protector September, 1973 Known Space Novel K.S. 17 (2124 - 2341) Brand-new assumption introduced to Known Space: humanity is descended from the Pak. The novel 's second section is called "Vandervecken," and takes place in 2340. The first part is Adults, The
80 Borderland of Sol, The January, 1975 Known Space Short Story K.S. 28 (2650) Quantum Black Hole as a murder weapon
Procrustes November, 1993 Known Space Novella K.S. 29 (2654) Beowulf loses his head, but takes it surprisingly well
Color of Sunfire, The November, 1993 Known Space Short Story K.S. 33 (2686) Read It Here! Mention of an alien race called the Pleione description of Silvereyes (Beta Hydri I) description of the Puppeteer homeworld. We finally catch up to Richard Harvey Shultz-Mann, forty years after Relic of the Empire, A
Ghost April, 1994 Known Space Short Story K.S. 30 (2656) Beowulf Shaeffer 8-part Crashlander framing story
Juggler of Worlds September, 2008 Known Space Novel collaboration with Ed Lerner set in Known Space and on the Puppeteer Fleet of Worlds A sequel to Fleet of Worlds
Destroyer of Worlds November, 2009 Known Space Novel Collaboration with Ed Lerner Sequel to Fleet of Worlds and Juggler of Worlds.
Betrayer of Worlds October, 2010 Known Space Novel Newest collaboration with Ed Lerner
85 Afterthoughts August, 1975 Known Space: About Non-Fiction "parting thoughts" on Known Space, as if. Shares an "Opus number" with "Timeline for Known Space" in Niven's published bibliographies.
85 Timeline for Known Space August, 1975 Known Space: About Non-Fiction Like the title says. Shares an "Opus number" with "Afterthoughts" in Niven's published bibliographies.
Introduction: The Known Space Series January, 1980 Known Space: About Introduction introduction to Relic of the Empire, A  
Introduction to Man-Kzin Wars I January, 1988 Known Space: About Introduction Like the title says
Foreword to The Guide to Larry Niven's Ringworld February, 1994 Known Space: About Introduction A brief discussion of the Ringworld and how it's been re-engineered by fans, both professional and amateur, over the years.
Timeline for Known Space November, 1996 Known Space: About Non-Fiction Updated from the version that originally appeared in Tales of Known Space
My Universe and Welcome Back! November, 1996 Known Space: About Introduction New introduction for the new Known Space collection. The title is a direct reference to My Universe and Welcome To It!
Bibliography: The Worlds of Larry Niven November, 1996 Known Space: About Non-Fiction Annotated by "universe," lists latest publication only. Updated from the version in Tales of Known Space  
Canon for the Man-Kzin Wars January, 2003 Known Space: About Non-Fiction Like the title says

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