‘The Great Kingdom’ is an upcoming movie that tells the story of the origins of Dungeons and Dragons

“The adventure party is a family and Gary engendered family wherever he went.”

From their Facebook page:

A documentary that tells the story of the people that created Dungeons & Dragons and how its success affected their lives and families. The Great Kingdom is the story of families, blood and personal bond, affected by the success of the game, a game that brought joy to millions but heartbreak to its creators.

In 1969, Gary Gygax, a family man and game designer with an entrepreneurial mind meets Dave Arneson, another brilliant game designer from Minneapolis/St. Paul.