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 over a year — the world of Greyhawk was the setting most closely identified with the development of the game from 1972 until 2008. The world itself started as a simple dungeon under a castle designed by Gary Gygax for the amusement of his children and friends, but it 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 2000–2008.
In the Greyhawk setting, the world of Oerth has four continents. Only one of these continents, Oerik, has been officially described in various D&D publications over the past 30+ years, and in fact detailed information is available only for its eastern end, known as the Flanaess.
The world map of Oerth was developed by Gary Gygax as circumstances dictated, the new cities and lands simply drawn over a map of North America. Gygax and his friend Rob Kuntz further developed this campaign setting, and by 1976, the lands within a radius of 50 miles had been mapped in depth, and the lands within a radius of approximately 500 miles were in outline form. In addition, more distant lands had been roughly sketched out to accommodate various adventures.
Click: Map of Greyhawk Flanaess