Opus No. Title Datesort ascending Setting Publication type I.U.C. Notes
Foreword: Playgrounds for the Mind August, 1990 N/A Non-Fiction Introduction to N-Space
Blowing Smoke August, 1990 N/A Non-Fiction A description and discussion of the Smoke Ring's origins, parameters and environment.
177 Madness Has Its Place August, 1990 Known Space: Man-Kzin Wars Short Story K.S. 19 (2375-83) First Known Space story since The Ringworld Engineers in 1979.  Describes Sol's first response to the Kzin invasion
190 Kiteman, The August, 1990 The State: The Smoke Ring Short Story short story set in the Smoke Ring
191 Space August, 1990 N/A Non-Fiction essay on the Citizens Advisory Council for a National Space Policy. Includes some text from their report, "How to Save Civilization and Make a Little Money," not to be confused with the essay in Scatterbrain of the same name.
Bibliography August, 1990 N/A Short Story bibliography, updated in Bridging the Galaxies
Review of Good Omens, by Neil Gaiman and Terry Pratchett August, 1990 N/A Review book review
N-Space August, 1990 N/A Collection Major retrospective of Niven's career from 1964-1990. Contents: Introduction: "The Maker of Worlds" by Tom Clancy On Niven excerpt from World of Ptavvs excerpt from A Gift from Earth excerpt from Ringworld "The Fourth Profession" excerpt from Protector excerpt from The Mote in God's Eye, with Jerry Pournelle Dramatis Personae Foreword: Playgrounds for the Mind Bordered in Black Long Night, The All the Myriad Ways For a Foggy Night Meddler, The Passerby Down in Flames Fourth Profession, The Shall We Indulge in Rishathra? Man of Steel, Woman of Kleenex Inconstant Moon What Can You Say About Chocolate Covered Manhole Covers? Cloak of Anarchy Hole Man, The Night on Mispec Moor Flare Time Locusts, The Building the Mote in God's Eye Brenda Return of William Proxmire, The Tale of the Jinni and the Sisters, The Madness Has Its Place Niven's Laws Blowing Smoke Kiteman, The Alien in our Minds, The Space Bibliography
Blind Alleys April, 1990 N/A Non-Fiction Article about "a handful of mistakes" that writers have made, which "stupid people would never think of."
Mom and the Kids March, 1990 The Fleet Short Story Collaboration, co-written with David Drake
Avogadro's World January, 1990 Stand Alone Short Story Collaboration with Jerry Pournelle and Wendy All, never completed.
Ghost Ships, The January, 1990 The State: The Smoke Ring Novel rejected sequel to The Smoke Ring... novel of strange supernova-born life-forms
Read This November, 1989 N/A Essay Review of The Boat of a Million Years, by Poul Anderson
166 Portrait of Daryanree the King, The September, 1989 Magic Universe Short Story First American rights unsold. Sent to Argos. Argos collapsed. Antho rights promised to Susan Shwartz for Arabesques III. Sold to Titan Books (England).
172 Barsoom Project, The September, 1989 Dream Park Novel Collaboration, co-written with Steven Barnes.  Sequel to Dream Park
Response to "The New Generation Gap" September, 1989 N/A Essay Invited response to "The New Generation Gap: A Study of SF Writers' Ages of Professional Entry into the Science Fiction Field for Six Decades of SF", by Kathryn Cramer, which was published in The New York Review of Science Fiction #11, July 1989. Appears alongside essays on "The New Generation Gap" by Clarke, Delaney, Dickson, Leiber, Brin and others.
175 Man-Kzin Wars II August, 1989 Known Space: Man-Kzin Wars Anthology Anthology edited by Larry Niven and James Baen, with a new introduction by Niven
Introduction to Man-Kzin Wars II August, 1989 N/A Introduction Like the title says
167 Wishing Game, The June, 1989 Magic Universe: Warlock Short Story W. 05 final tale of the Warlock's companions
171 Murder of Halley's Comet, The May, 1989 The Fleet The Fleet Collaboration, co-written with David Drake

Pages