Articles (2)
| Title | Pages | Publication | Code | Date | Publisher | System (Setting) | |
|---|---|---|---|---|---|---|---|
 The Underground Menace | A-D |  Fragments of Fear | CHA2310 | 1985 | Chaosium | Call of Cthulhu (Classic) | Democratic Republic of the Congo; Byakhee; Flying Polyp |
| The Underground Menace | 102-106 | Call of Cthulhu | CHA2324 | 1989 | Chaosium | Call of Cthulhu (Classic) |