The World of Greyhawk and its inaugural adventure "The Temple of Elemental Evil" was first introduced with the release of the Advanced Dungeons & Dragons rule set in 1985. Developed by Gary Gygax, Greyhawk became the first complete D&D campaign setting detailing an entire world of adventure including detailed accounts of continents, countries, cultures, folklore, personages and much more. Greyhawk lore and arcana have since pervaded nearly every aspect of today's dynamic D&D universe from spells to monsters to famous characters, providing players with a more rich and robust playing environment.