“Beneath the city, there is yet another city: wet and dark and strange; a city of sewers and moist scuttling creatures and running rivers so desperate to be free not even Styx fits them. And in that lost city beneath the city, I found the child.”
– Harlan Ellison
The Judges Guild’s “Wraith Overlord” module was an attempt to create a mega-dungeon, or series of linked underground adventures, under the famous City State of the Invincible Overlord. This publication was issued late in the company’s history and, while currently fetching high prices online, nevertheless has a rather mixed reputation. After all, people assume that the dungeon to the City State should be at least as detailed and interesting as the city above it. That is a high bar to get over indeed.