A D&D campaign setting which is source of many of the spells known across all of the D&D multiverse. Also the name of a city within the world.
Alternate name: World of Greyhawk
The first video game about Greyhawk was released on October 16, 2003.
Likely all games in world of Greyhawk are set in Flanaess, and likely also include the city of Greyhawk.
Greyhawk is notable for being the home setting for many powerful wizards who developed spells known in all other D&D settings as well.