Swords of the Undercity is the first module published for the Lankhmar – City of Adventure supplement.[1]Swords of the Undercity contains three Lankhmar adventure scenarios that connect to each other: "The Secret of Urgaan of Angarngi", "The Web of Mog", and "Claws of the Shree-kah".[2]
Stephen H. Dorneman reviewed the adventure in Space Gamer/Fantasy Gamer No. 80.[1] He commented that the adventure has "excellent production values throughout, and a plethora of useful data and errata for any Gamesmaster using the Lankhmar setting in their campaign. But more importantly, Swords of the Undercity is an adventure supplement that can help a gamemaster provide exciting, original AD&D adventure to his or her players without sacrificing the mysterious, magical feel of Fritz Leiber's creation."[1]