Larry Niven books in order
64 books in the catalogue, about 416 hours of reading in all; the shortest takes 3 hours and the longest 16 hours.
4 series and 50 standalone books in the catalogue.
Ringworld series
4 books
CoDominium
5 books
King David's Spaceship 5.2 h 
The Mote in God's Eye 10.3 h High Justice length not known
Exiles to Glory length not known
The Gripping Hand 7.5 h Known Space
6 books 1 
World of Ptavvs 3.5 h 2 
A Gift from Earth 4.7 h 3 
Neutron Star 5.2 h 4 
All the Myriad Ways 3.3 h 5 
Protector 4.1 h
World of Ptavvs 3.5 h 2 A Gift from Earth 4.7 h 3 Neutron Star 5.2 h 4 All the Myriad Ways 3.3 h 5 Protector 4.1 h The Patchwork Girl length not known
The State
3 books
Standalone books
Inconstant Moon 3.7 h 
The Hugo Winners 5.9 h 
The Hugo Winners, Volume Four 7.5 h 
The Hugo Winners, Volumes One and Two 15.6 h 
Where Do We Go from Here? 7.9 h 
Flight of the Horse 4.0 h 
A Hole in Space 3.6 h Tales of Known Space 4.4 h 
The Long Arm of Gil Hamilton 3.3 h 
Lucifer's Hammer 11.7 h 
The Hugo Winners, Volume Three 11.1 h 
100 Great Science Fiction Short Short Stories 5.0 h 
Isaac Asimov's Masters of Science Fiction 5.3 h 
The Magic Goes Away 3.9 h 
The 13 Crimes of Science Fiction 8.4 h 
Convergent Series 4.2 h 
Galaxy 8.5 h 
Microcosmic Tales 6.0 h 
The Patchwork Girl 3.2 h 
Dream Park 8.0 h 
Oath of Fealty 6.0 h 
Descent of Anansi 5.1 h 
Isaac Asimov's Aliens & Outworlders 5.3 h 
More Magic 3.6 h 
Supermen 6.4 h 
Baker's Dozen -- 13 Short Science Fiction Novels 10.5 h 
Footfall 9.8 h 
Limits 4.4 h 
Mathenauts 5.5 h 
The Legacy of Heorot 6.9 h 
The Smoke Ring 6.6 h 
The Man-Kzin Wars 5.3 h 
Alien Sex 5.3 h 
N-Space 9.9 h 
Fallen Angels 7.2 h 
The California Voodoo Game 6.5 h 
The Mammoth Book of Fantastic Science Fiction 9.9 h 
Crashlander 6.4 h 
Flatlander 8.0 h 
Destiny's Road 7.9 h 
The Magic Goes Away Collection 6.8 h 
The Draco Tavern 5.9 h 
Fleet of Worlds 5.6 h 
Juggler of Worlds 6.5 h 
Destroyer of Worlds 6.7 h 
Escape from Hell 6.4 h 
The Best of Larry Niven 11.3 h 
Bowl of Heaven 7.6 h 
Fate of Worlds 5.9 h 
Infinite Stars 9.9 h