Dungeon Master's Guide (2008)

User Entry:

The second of three core rulebooks for the 4th Edition Dungeons & Dragons Roleplaying Game.

The Dungeon Master’s Guide gives the Dungeon Master helpful tools to build exciting encounters, adventures, and campaigns for the 4th Edition Dungeons & Dragons Roleplaying Game, as well as advice for running great game sessions, ready-to-use traps and non-player characters, and more. In addition, it presents a fully detailed town that can serve as a starting point for any D&D game.

From Credits Page - not linked above:

Building on the Design of Previous Editions by E. Gary Gygax, Dave Arneson (1st Edition and earlier); David "Zeb" Cook (2nd Edition); Jonathan Tweet, Monte Cook, Skip Williams, Richard Baker, Peter Adkison (3rd Edition)

Dedicated to the memory of E. Gary Gygax