The 2024 Dungeon Master’s Guide might not contain as many basic rules for playing Dungeons & Dragons as the Player’s Handbook does, but it still makes some major changes to core aspects of the game. As a revamp of the ideas put forward in the 2014 Dungeon Master’s Guide, the new edition keeps a lot of what worked about the last one. There’s also a lot that didn’t work as well as it could in the 2014 book, however, and a variety of minor tweaks are occasionally accompanied by sweeping overhauls.