Primigenio similar a una enorme araña de cabeza casi humana.
| ▲Título▼ | ▲C▽ | ▲Año▼ | Autor | ▲V▼ | ▲Rel.▼ |
|---|---|---|---|---|---|
Eldritch Horror: The Dreamlands Expansion  |    | 2017 | Dane Beltrami, Tim Uren, Nikki Valens | — | Baja |
| Swarm of Spiders |  | 2019 | Ethan Patrick Harris | — | Baja |
| The Spinner in Darkness / Atlach Nacha | | 2020 | Reiko Murakami | — | Media |
| Grey Weaver | | 2019 | Helge C. Balzer | 6.00 | Baja |
| The Great Web, Prison of Cocoons | | 2020 | Leanna Crossan | — | Baja |
| The Bridge of Webs (The Dream-Eaters) | | 2019 | Cristi Balanescu | 7.00 | Baja |
| Atlach-Nacha (Weaver of the Cosmos) | | 2020 | Helge C. Balzer | 7.00 | Baja |
| Atlach-Nacha | | 2015 | Loïc Muzy | — | Media |
| Atlach-Nacha |    | 1989 | Sandy Petersen | — | Alta |
| Web of Memory |  | 1993 | Michael Szymanski | — | Alta |
| Thracian Gold | | 2008 | Glyn White | — | Alta |
| The Fellowship of the Witching Hour | | 2006 | David Sharrock | — | Media |
| The Andaman Islands | | 1986 | Keith Herber, Kevin Ramos, Carolyn Schultz-Savoy | — | Media |
| Additional Deities, Races and Monsters for the Cthulhu Mythos |  | 1983 | Alan K. Crandall | — | Media |
| The Seven Geases |    | 1934 | Clark Ashton Smith | 7.00 | Alta |
| Recognition | | 1981 | Brian Lumley | — | Alta |
