Lankhmar, City of Adventure (1985) was a supplement containing maps, descriptions of the city areas, game statistics for various prominent characters from the stories, and ideas for adventures in and around the city. It was updated in 1993 under the same name for use with 2nd edition AD&D. Several modules and accessories were produced for use with City of Adventure.
The New Adventures of Fafhrd and Gray Mouser (1996) was a boxed set that replaced Lankhmar, City of Adventure and could be used as a AD&D supplement or a standalone RPG with simplified AD&D rules.