2018 · ソースブック（プレイを拡張するルール／オプション）

100 Sounds to Hear in a Dungeon

A d100-style list of sounds that characters may hear while exploring a dungeon. The entries cover noises from the dungeon itself, its inhabitants, and passing travelers, ranging from harmless distractions to possible signs of danger. Each result includes a short description, such as the sound of many feet shuffling along the ground. The PDF supports Adobe layers, allowing page backgrounds and images to be hidden for easier printing.