This set contains lists of 300 monsters, 300 treasures, treasure storage/guarding/hiding modes, and complete instructions for using the assortment to fill in partially stocked or newly encountered dungeon levels.

This assortment of monsters and treasures by dungeon level is designed to answer two needs. first, the package provides the Dungeon Master with a ready matrix of encounters when his players are exploring a dungeon encountered in a Wilderness Adventure. Second, and more important, these assorted monsters and treasures are aimed at making the DM's task a lighter one when it comes to readying the major dungeon in which most of his players' Underworld adventures will take place.