Open Specification

Lonelog

A Standard Notation for Solo RPG Session Logging

v1.7.0

A lightweight shorthand language designed to separate mechanics from fiction, stay compact at the table, and scale from quick one-shots to sprawling campaigns.

Read the Docs Download on itch.io GitHub

The five core Lonelog symbols: @ ? d: -> =>

Quick Start

session-log.md
### S1 *Dark alley, midnight*
@  Sneak past the guard
d: Stealth 4 vs TN 5 -> Fail
=> I kick a bottle. Guard turns!
?  Does he see me clearly?
   -> No, but...
=> He's suspicious, starts walking toward the noise

Core Philosophy

@

Format-agnostic

Works the same in digital Markdown code blocks and in paper notebooks.

d:

Toolbox, not a rulebook

Fully modular. Use the five core symbols, or layer in clocks, threads and NPC tags as you need them.

→

Built for scannability

Standard tokens let tools, plugins and human readers parse logs at a glance.

Latest from the Blog

Date Title Categories
Nov 13, 2026 Lonelog v1.7: The Consolidation Release devlog
May 16, 2026 Lonelog is now live at lonelog.org! announcement
May 13, 2026 Lonelog 1.5.0 - Oracle Dice Notation and Block Tag Consistency devlog
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Community

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Documentation is also available in Italiano and Français.