| ▲Título▼≋ | ▲Original▼⊗ | ▲Año▼≋ | Idioma | ▲C▽≋≋ | ▲V▼ |
|---|---|---|---|---|---|
| Call of Cthulhu Introductory Rules | Call of Cthulhu Quick-Start Rules | 2018 | Inglés |   | — |
| La caixa d'eines del guardià | A Keeper's Tool Kit | 1996 | Catalán | | — |
| Apéndices (a "Amos ocultos") | Appendices (to "Unseen Masters") | 2002 | Español | | — |
| Annexes ("Les Maîtres Indicibles") | Appendices (to "Unseen Masters") | 2013 | Francés | | — |
| Alcheringa | Alcheringa for Roleplaying | 2018 | Inglés | | — |
| Alcheringa | Alcheringa for Roleplaying | 1995 | Español | | — |
| Alcheringa | Alcheringa for Roleplaying | 2023 | Español | | — |
| Acerca de los hechizos | Concerning Spells | 2021 | Español | | — |
| Acerca de la magia | Concerning Magic | 2021 | Español | | — |
| About Investigators | About Investigators ("Call of Cthulhu 5th Edition") | 1998 | Inglés | | — |