"Role-playing game historian Ben Riggs unveils the secret history of TSR- the company that unleashed imaginations with Dungeons & Dragons, was driven into ruin by disastrous management decisions, and then saved by their bitterest rival. Co-created by wargame enthusiasts Gary Gygax and Dave Arneson, the original Dungeons & Dragons role-playing game released by TSR (Tactical Studies Rules) in 1974 created a radical new medium: the role-playing game....