The Dungeon Master's Guide is a core rulebook for the tabletop role-playing game Dungeons & Dragons. It provides essential guidance for the Dungeon Master (DM), who is responsible for creating and managing the game world, storytelling, and facilitating player interactions. The guide includes rules for running adventures, creating encounters, and managing game mechanics. Additionally, the guide offers advice on world-building, character development, and crafting engaging narratives. It also contains resources like magic items, traps, and guidelines for improvisation, helping DMs enhance their campaigns and ensure a fun experience for players.