Oerth
Appearance
The name of the planet on which the earliest Dungeons and Dragons setting - that of Greyhawk - takes place. Oerth is about twice the size of Earth and has an axis tilt of 30 degrees, which results in larger polar caps and shorter summers in temperate areas. Only about one sixth of Oerth's surface, that of the Flannaess is accurately detailed. Data on Aquaria and Hepnomaland are based on fanwork, and these continents are not officially supported by TSR.