| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| Demon Magic: The Second Stormbringer Companion | 978-0-933635-22-7 | 1985 | |
| Grey Knight | 978-0-933635-35-7 | 1986 | |
| Masks of Nyarlathotep: Perilous Adventures to Thwart the Dark God | 978-1-56882-329-4 | 2010 | Lynn Willis |
| The Complete Masks of Nyarlathotep | 978-1-56882-069-9 | 1996 | " |