X-treme Dungeon Mastery by Tracy and Curtis Hickman is oft hailed as The Cure for the Common Game. This newly revised second edition now Roleplaying games have come a long way since the 1970s. Possessed of this second edition of X-treme Dungeon Mastery, you can become and X-treme Dungeon Master, and as an XDM you'll stand ready for the next fifty years of RPGs.
