This is a small-format (108x175mm) retroclone of the famous 1974 rules for fantastic medieval campaigns (playable with paper & pencils & miniature figures). It attempts to faithfully present the original rules with greater brevity & logical organization. 

I originally compiled this to make running my own campaign easier. It omits a lot, and is intended as a portable, quick-reference supplement to the original material rather than a standalone replacement.

Features

• Packs (almost) all the LBB rules into 101 pocket-sized pages.
• Organized for easy use at the table, with rules of play gathered in Part I, lists of game entities (spells, monsters, treasure) in Part II, and campaign stocking tables in Part III. 
• Refactors many nested tables to require fewer die rolls while having identical (or near-identical) probabilities.
• Condenses monster information to just that needed to run combat, with a separate section covering lairs.
• Decorated with terrible charmingly amateurish illustrations by the compiler, as well as cover art by Chaoclypse.
• Emojis(?) 🧙‍♂️

Fork This

The best way is to decide how you would like it to be, and then make it just that way!

- Underworld & Wilderness Adventures, p. 36

The Typst source code is available in a GitLab repository so that anyone can edit The Littlest Brown Book to their liking. My hope is that this can double as a serviceable chassis for your own fantasy heartbreaker.

I've written a basic guide to modifying the source code here, and also recommend checking out the tutorials here and here. Typst can be used for free in a browser. (Note that the fonts Rye, Noto Emoji, & Josefin Sans can be downloaded free from Google Fonts. Lete Sans Math is avialable on Github).

Supplements

• Supplement A: Pocket Pregenerated Personage Portfolio has dozens of NPCs to drop in to random dungeon & wilderness encounters.
• Supplement א: Chromatic Charms & Spectral Sorceries divides the Mage & Cleric spell lists into five color-coded magical traditions for (slightly!) more flavor & variety.
• Outdoor Survival Remix has a revamped version of the classic wilderness map.

Etc.

The 108x175mm (4.25x6.9in) page size was chosen because it is the smallest available for print-on-demand through Lulu.com. You can get the POD here. I've also uploaded a print-it-yourself version formatted as a half-page booklet on 8.5x11 in. paper.

Everything is licensed as CC-BY-SA 4.0, so feel free to use it in your own work as long as you give credit and release the results under the same license.