This is a jam for making single dungeon rooms (Onegeons) that are modular and can be used in any dungeon someone is writing or running in a tabletop roleplaying game. See the Onegeon Manifesto for more about the concept.

The jam is simple, create a Onegeon and share it here—the weirder the better.

There are just a few rules:

1. Must be a single room
2. Must be system neutral
3. Must fit on a single side of a letter size sheet of paper
4. Must not contain bigoted or hateful content (as judged by me)
5. Must not contain AI-generated text or images (as judged by me)
6. Must be content for a tabletop roleplaying game (no video games)

Submissions breaking the rules will be removed.

So, get to work and make some Onegeons between now and the end of the year. Make as many as you want! If there’s enough and there is interred among the creators, we can look into publishing a Onegeon anthology when this is done.

Jam logo by Sam Long available for use by all jam participants.