Dungeon Masters Guide

Weave legendary stories in the world's greatest roleplaying game. All you need to run a Dungeons & Dragons game is your imagination, some dice, and this book. The Dungeon Master's Guide teaches you how to how to run D&D adventures for your players-- how to invent monsters for them to fight, mysteries for them to solve, and fantasy worlds for them to explore.

The Dungeon Master's Guide is one of the three main Dungeons & Dragons books, along with the Player's Handbook and Monster Manual. It's a reference used by the Dungeon Master (the game's narrator) to create adventures--to run Dungeons & Dragons games and fill them with characters and stories.