M.A.R. Barker’s Empire of the Petal Throne, unveiled at Gencon VIII in August 1975 by TSR, is the original presentation of how to role-play in the world of Tékumel. This book, a reproduction of the Different Worlds printing, contains role-playing rules which are more-or-less Dungeons and Dragons compatible, and sufficient world information to provide a solid basic gaming experience in Tékumel.