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 Fleet of Worlds
2007 • 24 Readers • 318 pages • 3.3
#2 of 5 in Fleet of Worlds
2008 • 12 Readers • 448 pages • 3
2010 • 2 Readers • 320 pages • 3