Swords of the Undercity is part of the Dungeons and Dragons game that uses a fictional city for the stories created by which author?
Swords of the Undercity: Swords of the Undercity is a 1985 adventure module for the "Advanced Dungeons & Dragons" fantasy role-playing game, for the Lankhmar setting. Lankhmar: Lankhmar is a fictional city in the "Fafhrd and the Gray Mouser" stories by Fritz Leiber.
Fritz Leiber