Ringworld
A sci-fi RPG based on the Larry Niven's novels: set on an artificial mega-world (a ring around its star) with a melting pot of races and technology. It uses a variant of Chaosium's Basic Role-playing percentile system. Character races are human¸ Kzin¸ or Puppeteer. - A description from https://darkshire.net/jhkim/rpg/encyclopedia/ with kind permission of John H. Kim"