Ringworld series

The Ringworld series (1970–2012), by science fiction author Larry Niven, is a part of his Known Space set of stories. Its backdrop is the Ringworld, a giant artifact 600 million miles in circumference around a sun. The series is composed of five standalone science fiction novels, the original award-winning book and its four sequels:

• 1970: Ringworld
• 1980: The Ringworld Engineers
• 1996: The Ringworld Throne
• 2004: Ringworld's Children
• 2012: Fate of Worlds (by Niven and Edward M. Lerner)

Fate of Worlds is also a sequel to the four books of the Fleet of Worlds series, set in the same "Known Space" universe and all written by Niven and Edward M. Lerner:

• 2007: Fleet of Worlds
• 2008: Juggler of Worlds
• 2009: Destroyer of Worlds
• 2010: Betrayer of Worlds