Setting for the world of Legend of the Five Rings role-playing game and collectible card game. It was the official "sample setting" for the Dungeons & Dragons 3rd edition sourcebook Oriental Adventures (3e) (2001). However, shortly after the publication of Oriental Adventures, AEG obtained all the publishing rights to all L5R properties.
Rokugani society is based on a clan structure, with seven (and later eight) so-called "Great Clans", as well as a number of minor clans. Great Clans are made up of several family lines, each with their own general purpose within the clan. Minor clans, on the other hand, generally only have one family. Each clan also has areas of land bequeathed by the emperor under their control. The emperor retains ownership off all lands, however, and the clans essentially rent the lands they use by paying taxes annually.