Blackmarsh (2011 Bat in the Attic Games edition)
Blackmarsh is a hexcrawl setting for 0e-compatible games that details the Castle Blackmarsh, 17 geographical sites, and 78 locations. From the introduction:
Blackmarsh was designed to evoke the earliest campaigns of the world’s most popular roleplaying game. It takes place amid a wilderness full of danger and the possibility of great treasure. It is organized as a numbered hex grid with locales keyed to specific hexes. Locales are described briefly in a paragraph or two. Most locales are meant to serve as a springboard for the referee to create his own details. In addition, geographical entities, organizations, and realms that span multiple hexes are described as well.
Notes on This Edition
Released April 15, 2011. 24 pages, full color softcover, $7.00 print on demand (via OBS), free PDF.