I have a new book coming out next month called Game Wizards. Unlike my previous books, which are histories of game design, this is an early history of Dungeons & Dragons as a product: of how it came to be a product at all, of the people who made it, of its unlikely success, and of the battles that its success caused. If you've read my "Ambush at Sheridan Springs" article from 2014, this is a book-length expansion of its story. It follows the business journey of D&D, as well its creators, fro...