Advanced Search

Dragonmaw Cave for OSR
Quick Preview
Full‑size Preview

Dragonmaw Cave for OSR


Dragonmaw Cave for D&D BX and OSR Games

A 0-Level Dragon Fight for New D&D BX and OSR Adventurers

A fantasy funnel, rules for 0-level play, and new character options for classic editions of D&D

Sign up for more R. Rook announcements!

For many decades, the towns of the valley were guarded by Olkana, a kindly, young brass dragon, who lives in the even older Dragonmaw Cave to the north. No one has seen any sign of her in months, though, and recently livestock and pets have been stolen, travelers have gone missing, shrines have been desecrated, and even some wells have gone foul. You and your friends have traveled three days to Dragonmaw Cave to see if the elusive Olkana can help.

What is Dragonmaw Cave?


A funnel adventure to save the Seven Towns from a crew of bandits, their fiend-summoning boss, and a newly hatched Shadow Dragon, Dragonmaw Cave includes rules for introductory, 0-Level play to Dungeons & Dragon  BX and clones of classic D&D.

Originally created as a pamphlet adventure for a special event at Brooklyn’s Twenty Sided Store in 2017, R. Rook Studio began distributing the pamphlet version of the dungeon Itch in 2019.

This updated version includes opponent stats and  0-level character rules for both OSR games, as well as new character options for four new character types, including having the great bears and wise crows of the forest join your party and come to your aid.

An adventure for 1 GM and 2-5 players.


Dragonmaw Cave Features

  • A 10-location dungeon funnel with a variety of encounters and stats for Dungeons & Dragons BX and old-school games such as Old School EssentialsThe Black HackThe Vanilla Game, and Sharp Swords & Sinister Spells.
  • Rules for 0-level OSR characters
  • New D&D BX character classes, including puca, great bears, sage ravens, and revenants
  • OGL open content for all new OSR rules
  • A 24-page zine available in print or ebook formats
  • Art by Jef Thompson and Charlie Ferguson-Avery (licensed as stock) and cartography by Dyson Logos (under a CC-BY open license)


A Complete 10-Location Dungeon

The adventure includes 10 non-linear locations and full stats for 9 different opponents.

OSR/BX Rules for 0-Level Play

Rules for generating ability scores, determining equipment and backgrounds, and a set of ready-to-run pregens for BX.

New D&D Legacies & Classes

Replacing "race" in OSR games, Dragonmaw Cave's character creation includes the legacies puca, bear, crow,  and foolhardy, detailed  for classic D&D OSR games, along with BX-compatible classes for each.CrOnIS.png

 Customers Who Bought this Title also Purchased
Reviews (0)
Discussions (0)
Narrow Results
 Follow Your Favorites!
NotificationsSign in to get custom notifications of new products!
 Recent History

Product Information
File Size:
2.31 MB
Original electronic
Scanned image
These products were created by scanning an original printed edition. Most older books are in scanned image format because original digital layout files never existed or were no longer available from the publisher.

For PDF download editions, each page has been run through Optical Character Recognition (OCR) software to attempt to decipher the printed text. The result of this OCR process is placed invisibly behind the picture of each scanned page, to allow for text searching. However, any text in a given book set on a graphical background or in handwritten fonts would most likely not be picked up by the OCR software, and is therefore not searchable. Also, a few larger books may be resampled to fit into the system, and may not have this searchable text background.

For printed books, we have performed high-resolution scans of an original hardcopy of the book. We essentially digitally re-master the book. Unfortunately, the resulting quality of these books is not as high. It's the problem of making a copy of a copy. The text is fine for reading, but illustration work starts to run dark, pixellating and/or losing shades of grey. Moiré patterns may develop in photos. We mark clearly which print titles come from scanned image books so that you can make an informed purchase decision about the quality of what you will receive.
Original electronic format
These ebooks were created from the original electronic layout files, and therefore are fully text searchable. Also, their file size tends to be smaller than scanned image books. Most newer books are in the original electronic format. Both download and print editions of such books should be high quality.
File Last Updated:
June 21, 2022
This title was added to our catalog on June 21, 2022.