| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Cthulhu's Dark Cults | 978-1-56882-235-8 | 2010 | Shane Jiraiya Cummings · David Witteveen · William Jones · John Goodrich · Cody Goodfellow · Peter A. Worthy · Oscar Rios |
| Mansions of Madness | 978-1-56882-211-2 | 2007 | Michael DeWolfe · Wesley Martin · Mark Morrison · Lian Routt · Keith Herber · Fred Behrendt |
| Terror Australis: Cthulhu Down Under, Australian Background and Adventures | 978-0-933635-40-1 | 1987 | |
| The Complete Masks of Nyarlathotep | 978-1-56882-069-9 | 1996 | Larry Ditillio · Jason C. Eckhardt |