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EnglishWhat is Dyson's Dodecahedron?
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Dyson's Dodecahedron (dysonlogos.blog) is the blog of Dyson Logos, a cartographer and designer of fantasy RPG maps and dungeon locations. It is a working archive of hand-drawn maps, adventure locations, and design articles for tabletop roleplaying games, and it is also where official D&D maps he has drawn are republished in expanded, system-neutral form. If you run fantasy RPGs and need ready-to-use maps or adventure sites, this is the site's core offering.
What you'll find on the blog
The content falls into a few recurring categories:
- Maps — hand-drawn dungeon, regional, and location maps, often released as free low-resolution samples.
- Adventure locations — map plus original text describing the site, its history, and what's there.
- Official D&D maps — maps originally drawn for published Wizards of the Coast products, re-released with new, unrelated text.
- Design articles — posts about the craft of dungeon design and mapmaking.
Posts are tagged by system and theme, so you can filter by things like Dungeons & Dragons, Old School Essentials, Labyrinth Lord, OSR, Fantasy, Regional Map, or Ruins.
Free vs. paid content
Not everything is free, and the split matters if you're deciding whether to follow or support the site.
| Content | Availability |
|---|---|
| Low-resolution map samples | Free to everyone |
| High-resolution map versions | Patreon patrons at Level 1 Adventurer tier and above, plus all Legacy Patrons |
| Individual map releases | Also purchasable through the Patreon storefront |
| End-of-month PDF | Patreon-exclusive |
One structural detail worth knowing: the official-product map releases are not bundled into the Patreon-exclusive end-of-month PDF. They ship as their own separate PDF alongside it.
Licensing and usage
The maps are released under the blog's Restricted Release License, found on the copyright page. The stated intent is personal gaming use — using the maps at your own table. Distributing them outside your own sessions is described as a violation of the agreement.
There's also a copyright split to keep straight on the official maps: the map itself was drawn for a Wizards of the Coast product and is copyright Wizards of the Coast, while the accompanying text is original to the release package and unrelated to the official product's version of that map.
A concrete example
The Isle of the Abbey post shows how a release is structured. The map was drawn for Ghosts of Saltmarsh and is copyright Wizards of the Coast; the low-resolution version is free, the high-resolution version is patron-only, and the descriptive text — an island of sheer cliffs, skull dunes, submerged reefs, and the ruined Abbey of Saint Varro — is written fresh for this package rather than reused from the official adventure.
Who it's for
- GMs running OSR or classic fantasy games who want maps they can drop into a session immediately.
- DMs who want system-neutral location text they can adapt rather than a full published adventure.
- Mapmakers and designers interested in the design articles and the hand-drawn style.
- Patreon supporters who want high-resolution files and the monthly PDF.
If you only need a map to run tonight, the free low-resolution samples are enough to evaluate the style before deciding whether the high-resolution tier is worth it.