Dwellers of the Forbidden City is an adventure module, or pre-packaged adventure booklet, ready for use by Dungeon Masters in the Dungeons & Dragons (D&D) fantasy role-playing game. The adventure was first used as a module for tournament play at the 1980 Origins Game Fair, and was later published by TSR in 1981 for use with the first edition Advanced Dungeons & Dragons rules. The module was written by game designer David "Zeb" Cook, who partly ascribes his hiring by TSR to his work on this module. In the adventure, the characters are hired to recover a stolen object from a hidden oriental-style city ruled by a snake-worshipping cult of yuan-ti and their mongrelmen and tasloi servants. The module was ranked as the 13th greatest Dungeons & Dragons adventure of all time by Dungeon magazine for the 30th anniversary of the Dungeons & Dragons game in 2004. Source: Wikipedia (en)