Jonathan Tweet is best known for his work on the most recent edition of the Dungeons & Dragons roleplaying game, including co-authoring the "Player's Handbook." He also helped develop the new D&D miniatures product line. Bruce R. Cordell, an Origins award-winning author, has written over a dozen products, including "Return to the Tomb of Horrors, The Sunless Citadel," and the "Epic Level Handbook."