Day of Al'Akbar is an Advanced Dungeons & Dragons adventure module written by Allen Hammack and published by TSR inc. in 1986. The module consists of a forty-page booklet with a large color map and an outer folder. It bears the Dungeons & Dragons code I9, I meaning intermediate and 9 for module 9 in that series.

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.