
Like Greyhawk, its focus was more on rules than setting material, despite the name. The second supplement for the original D&D game, Blackmoor added rules, monsters, treasure and is notable for containing the first published adventure for a role-playing game - "Temple of the Frog". Despite the name, the Greyhawk supplement was not intended as a setting supplement, but rather featured rules used in Gary Gygax's Greyhawk campaign. The first supplement for the original D&D game, Greyhawk focused primarily on rules and removed the game's dependence on the Chainmail rules. This original version of D&D only included a few of the elements considered core to modern D&D and required the player to own several other games in order to make full use of the rules, however it is considered the first of what is now considered role-playing games and, along with its supplements, is responsible for the creation of the genre itself.

And they cover rules to the game, how to play, options for gameplay, stat blocks and lore of monsters, and tables the Dungeon Master or player would roll dice for to add more of a random effect to the game. In Dungeons & Dragons, rule books contain all the elements of playing the game. This list does not include books designed for use as premade adventures. This is a list of Dungeons & Dragons rulebooks for the Dungeons & Dragons ( D&D) fantasy role-playing game, sorted by the edition of the game that they appeared in.

5 Dungeons & Dragons 3rd edition and v3.5.4 Advanced Dungeons & Dragons 2nd edition.
