Ringworld and Before the Discovery of Ringworld is a 8-book series with 8 primary works first released in 1970 with contributions by Larry Niven and Edward M. Lerner.
#1 of 5 in Ringworld
1970 • 1 Reader • 284 pages
#1 of 5 in Fleet of Worlds
2007 • 24 Readers • 318 pages • 3.3
#2 of 5 in Fleet of Worlds
2008 • 18 Readers • 448 pages • 3.1