For Dave Arneson, however the nature of the map and other details about the society grew to get a deeper meaning. With the Blackmoor Game, the focus shifted from skirmish units and the vague war gaming notion of "Generals" to real flesh and blood characters. The setting Arneson created for these player controlled characters was called Blackmoor of course, but what of the lands beyond the Castle and town?
In the introduction to the original Dungeons & Dragons game, Gary Gygax writes:
'From the map of the "land" of the "Great Kingdom" and environs -- the territory of the C&C Society -- Dave located a nice bog wherein to nest the weird enclave of "Blackmoor," a spot between the "Great Kingdom" and the fearsome "Egg of Coot."'On his blog, Zenopus examines the exact location of Blackmoor on the map that became the basis for Arneson's campaign and later also the basis for the World of Greyhawk Setting. In an RPG-like context, the world of the Great Kingdom also gained a new depth. "King" Rob Kuntz was no longer just the leader of the was gaming association, but a character living in this imagined world, controlling the Kingdom. In Arneson's game, the King would sometimes send troops to aid Blackmoor against its many enemies.
Rob Kuntz himself may not have known about this, had it not been for the article Facts About Black Moor by Dave Arneson published in Domesday Book #13. I imagine the editors must have been thrilled to see someone taking their "world" so seriously!
More discussion of this article here.