Dave Arneson

David Lance Arneson was an American game designer best known for co-developing the first published role-playing game (RPG), Dungeons & Dragons, with Gary Gygax, in the early 1970s. Arneson's fundamental early role-playing game (RPG) genre work pioneered now-archetypical devices, such as: cooperative play to develop a storyline instead of individual competitive play to "win"; and adventuring in dungeon, town, and wilderness settings as presented by a neutral judge who doubles as the voice and consciousness of all characters aside from the player characters.

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