Lankhmar: The New Adventures of Fafhrd and Gray Mouser is a boxed set that replaced Lankhmar, City of Adventure. The supplement can be used as a Dungeons & Dragons supplement or a standalone game with simplified rules. The boxed set comes with:

• A 32-page rulebook
• A 96-page sourcebook
• A 64-page adventure book containing a 32-page adventure, a "cookbook" for designing further adventures, neighborhood geomorphs, and a character sheet
• A cardstock sheet containing player charts and tables and character descriptions for Fafhrd and the Gray Mouser (to be cut apart)
• A 21"x16" two-sided color map of the city of Lankhmar and the world of Nehwon