Tired of hauling all of your D&D rules supplements to the gaming table? Having trouble finding the rule you need? The Rules Compendium supplement takes all of the game's most important rules and presents them in a single comprehensive, easy-to-reference volume for players and Dungeon Masters. In addition to presenting the rules of the game, the Rules Compendium incorporates official errata as well as behind-the-scenes designer and developer commentary explaining how the rules system has evolved and why certain rules work the way they do.