The enduring legacy of mysterious Castle Greyhawk

“Castle Greyhawk has been a quasi-mythical dungeon. It did exist, in one form or another, and was part of Gary Gygax’s own D&D campaign. It was rumored to be anywhere between 13 levels, to 70 to 100s of levels. It was merged with Rob Kuntz’s “El Raja Key” at some point and made even larger. The full Castle Greyhawk had always been promised to us but only partially delivered.“