4th Edition Dungeons Masters Guide - The Dungeons & Dragons Roleplaying Game has defined the medieval fantasy genre and the tabletop RPG industry for more than 30 years. The 4th Edition D&D rules offer the best possible play experience by presenting exciting character options, an elegant and robust rules system, and handy storytelling tools for the Dungeon Master. The Dungeon MasterÕs 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, plus details on ready-to-use traps, non-player characters, and more. - D & D Roleplaying Game