Los locos años 20, época habitual de los juegos de rol lovecraftianos.
| ▲Título▼ | ▲C▼ | ▲Año▼ | Autor | ▲V▼ | ▲Rel.▽ |
|---|---|---|---|---|---|
| 1920s Timeline |    | 1996 | Gary O'Connell, Lucya Szachnowski | — | Media |
| 1920s Character Sheet |  | 1981 | Sandy Petersen | — | Media |
| 1920s Character Sheet | | 1992 | 8.00 | Media | |
| Yuggoth-lab |  | 2021 | Gregorin Canavate | — | Baja |
| Chapter II: The Thing in the Well | | 1984 | Keith Herber | — | Baja |
| The Doom from Below | | 2008 | Steven Brown | — | Baja |
| The Tablets of Ur-Nansha | | 2004 | William Jones | — | Baja |
| Slow Boat | | 1991 | Peter Jeffery, Mark Morrison | — | Baja |
| None More Black | | 2016 | Brian Sammons | — | Baja |
| The Journal of Henry Radcliff |  | 2005 | Clint Krause | — | Baja |
| The Iron Ghost | | 1991 | Geoff Gillan | — | Baja |
| Great Old Ones on the Great White Way | | 2011 | Joseph M. Isenberg | — | Baja |
| Chapter I: The Dreamer | | 1984 | Keith Herber | — | Baja |
| Breeding Ground | | 1994 | J. Todd Kingrea | — | Baja |
