Greyhawk
fictional world designed as a campaign setting for the Dungeons & Dragons fantasy roleplaying game
Greyhawk, also known as the World of Greyhawk, is a fictional world designed as a campaign setting for the Dungeons & Dragons fantasy roleplaying game. Although not the first campaign world developed for Dungeons & Dragons—Dave Arneson's Blackmoor campaign predated it by about a year—the world of Greyhawk closely identified with early development of the game beginning in 1972, and after being published it remained associated with Dungeons & Dragons publications until 2008.
The world itself started as simply a dungeon under a castle designed by Gary Gygax for the amusement of his children and friends, but it was rapidly expanded to include not only a complex multi-layered dungeon environment, but also the nearby city of Greyhawk, and eventually an entire world. In addition to the campaign world, which was published in several editions over twenty years, Greyhawk was also used as the setting for many adventures published in support of the game, as well as for RPGA's massively shared Living Greyhawk campaign from 2000 to 2008.
Setting
The World of Greyhawk is located on a planet called Oerth. Oerth has an axial tilt of 30 degrees, which causes greater seasonal temperature variation than on Earth and is controlled by wizardly and divine magic that shifts weather patterns to be more favorable to the populace. Castle Greyhawk was the most famous dungeon in Oerth, the home campaign world of Gary Gygax. Players in the earliest days of this campaign mostly stayed within Castle Greyhawk's dungeons, but Gygax envisioned the rest of his world as a sort of parallel Earth, and the original Oerth (pronounced 'Oith', as with a Brooklyn accent) looked much like the real-world Earth but filled with imaginary cities and countries. Several years later, when TSR produced the original World of Greyhawk folio (1980), Gygax was asked to produce a map of the world and decided to create something new which still featured many of the locales from his original world of Oerth but with new geography. Gygax also connected Dave Arneson's Blackmoor to his world by including a country by that name in Oerth.
This brief starts where responsible research should: with the source description of “Greyhawk” as fictional world designed as a campaign setting for the Dungeons & Dragons fantasy roleplaying game. Everything that follows is an evidence route, not borrowed authority.
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Contemporary correspondence, administrative files and participant testimony can test how later narratives organized the event or institution. The source revision retrieved here is dated May 12, 2026. The linked authority identifier is Q2447657. 1 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1972, 2008, 2000 and 1980.
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This entry incorporates text from “Greyhawk” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.