Joseph Bloch has a solid library of OSR releases in his catalogue, but probably the most universally useful release of Joe's is the Random Terrain and Encounter Generator.
Although the Random Terrain and Encounter Generator is written for Joe's What If 2e Ruleset, Adventures Dark & Deep, it is not only compatible with any OSR ruleset but should work equally as well with Pathfinder or D&D 5e.
Normally 9.95 in PDF, until tomorrow morning the Random Terrain and Encounter Generator is on sale for 4.97.
A comprehensive system for creating and stocking wilderness and dungeon environments.
Within these pages you’ll find rules for randomly generating terrain in wilderness, including settlements and ruins, as well as random encounter tables you can either use as-is or use as inspiration for your own encounter tables.
Encounter tables are provided for every combination of eight different terrain types, three different climates, and two options for civilization or wilderness are given, as well as tables for prehistoric and water-born encounters. All in all, that's 83 encounter tables for wilderness, dungeon, and the Ethereal and Astral planes. All use the monsters described in the ADVENTURES DARK AND DEEP™ Bestiary, but are quite suitable for any old-school RPG.
In addition, a complete system for generating a random dungeon is presented, as well as ten comprehensive encounter tables for encounters from kobolds to demon princes. Three new monsters are also included to round out both dragon and human encounters.
Plus you will also find a complete system for creating a random urban landscape, with 24 different city district types, special features, and random encounters designed for districts in both day and night.
All are suitable for the game master who wants to run a game using random rules or to use the tables for quick inspiration, or can also be used for solo play without the need for a game master at all.
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