True Dungeon Dungeon Master's Guide

From the introduction: By receiving this packet, you can count yourself among a unique, elite class of Gen Con volunteers: a True Dungeon (TD) Dungeon Master (DM). The DM plays a significant role in TD’s success as they directly influence how each room operates and therefore the players’ overall experience. True Dungeon hopes you are excited to have been selected for this role and wants to thank you for helping make TD Gen Con’s most popular event!