The Dungeon Master Guide (DMG) is a core rulebook for the tabletop role-playing game Dungeons & Dragons (D&D). It provides essential tools and guidelines for the Dungeon Master (DM), who is responsible for creating and managing the game world, storytelling, and facilitating gameplay. The DMG includes advice on designing adventures, crafting encounters, and managing player dynamics. In addition to gameplay mechanics, the DMG offers resources for world-building, including tips on creating unique settings, non-player characters, and magical items. It also features optional rules and tables to enhance the gaming experience, making it a valuable resource for both new and experienced DMs.