Characters and monsters move about on hex tiles representing dungeons and cellars. There have been three segments of dungeons and dragons. Most game mechanics are familiar to players of "Dungeons & Dragons" and other d20-based games. Mystara is a campaign setting for the "Dungeons & Dragons" fantasy role playing game. In 2003 Wizards released version 3.5 of "Dungeons & Dragons" and the d20 system. They tentatively restore their differences in the episode Advanced Advanced Dungeons & Dragons. The game is an action role-playing video game set within the "Dungeons & Dragons" universe. The Rod was one of the first artifacts detailed for the "Dungeons & Dragons" game. Yig is the name of a deity in the Arcanis Dungeons & Dragons campaign setting. The d20 System is a derivative of the third edition "Dungeons & Dragons" game system. Forgotten Realms is a campaign setting for the "Dungeons & Dragons" ("D&D") fantasy role-playing game. He later composed with MIDI sequencing for several other "Dungeons & Dragons" games. But there was still the matter of the unpublished dungeons under Castle Greyhawk. Almost all named only "Dungeons & Dragons". Modern setting based on "Dungeons & Dragons".