 He also collaborated with Lynn Willis to create "Masks of Nyarlathotep" (1984), a world-spanning campaign for Chaosium's "Call of Cthulhu".It won an Origins Award, and is considered one of the best roleplaying adventures of all time, For a few months, DiTillio was also a contributor to Chaosium's "Different Worlds" magazine, writing about news from the world of film and television in his "The Sword of Hollywood" column.DiTillio also authored the book "Demon Magic