PUM Lite — Free Solo RPG App

Play Any Tabletop RPG Solo!

PUM Lite is a multi-platform journaling app designed for solo tabletop roleplaying and creative storytelling. Whether you are journaling a dark fantasy hex-crawl, playing D&D by yourself, exploring a sci-fi space opera, or using the built-in Plot Unfolding Machine ruleset, PUM Lite is your perfect, distraction-free digital companion.

This is the FREE VERSION equivalent of PUM Companion, with fewer features, yet fully-playable in its own.

No accounts, no ads, no internet required. Just you, your characters, and your story. This page includes Windows 10/11 and Linux (Flatpak and Snap). For Android and Apple, refer to the official app stores.

The rulebook of the Plot Unfolded Machine is recommended to enjoy the most of this app, particularly If you never did this hobby before. The app is however self-explanatory and has some basic instructions inside to get you going.

Supported languages: English, Spanish, French, German, Italian, Brazilian Portuguese, Chinese.

Join us on Discord

Your Virtual Game Master

PUM Lite includes built-in digital tools for the acclaimed Plot Unfolding Machine (PUM) solo engine. No preparation required—just roll, write, and play! Whenever you need a twist, a scene idea, or a Yes/No answer, use the Oracles or the Plot Beat buttons to let PUM drive your story forward.

• Random prompts: Get instant scene hooks and unexpected events that automatically invoke your active characters and locations.
• Modify proposals: Have a cool idea but want a twist? Propose your scene and let PUM add a random modification (like "Unexpected event") to keep you on your toes!

Never played Solo RPG or PUM before? Check out the Online Manual

Features - PUM Lite vs PUM Companion

• Unlimited Stories: Play and write as many campaigns and characters as you want with zero limits.
• Interactive Story Journal: Keep a clean, chronological log of your adventure scenes, oracle results, and narrative twists.
• Built-in PUM Oracles: Instantly ask questions using Deterministic, Subjective, or Conversation Yes/No oracles, plus Quantifiers and Descriptive tables.
• Curated Plot Tracks: Choose from curated tracks (Standard, Dungeon, Journey, Heroic, Survival, and more) to pace your story toward a satisfying climax.
• Plot Nodes: Mark characters, locations, world elements, potential problems, useful findings, or pending questions as Plot Nodes so PUM can actively pull them into your scenes.
• Random Tables: Create simple and weighted random tables, or import community tables in `.pumt` format.
• PDF & Save Export: Export your journal as a shareable PDF, or back up your entire game in `.pumc` format.
• 🔒 100% Free & Private: No ads, no trackers, and no internet connection needed. Your save games are stored locally on your device.

PUM Companion exclusives

• SUM and GUM oracle systems for deeper scene and game simulation.
• Interactive, editable character sheets and world maps with tokens.
• Multiple log spaces and multi-tab journals per entity.
• Google Drive and iCloud cloud synchronization.
• Advanced random tables with nested rolls, card decks, and macros.
• Voice notes, image editing, and PDF sheet extraction.

👉 For a complete, feature-by-feature breakdown, check out the Feature-Parity Table

Master the System

PUM Lite is a free digital workspace. To master the full solo storytelling philosophy, emotional scene deviations, and deep gameplay advice, grab the official 2-sheet Plot Unfolding Machine PDF rulebook on itch.io:

👉 Get the Official PUM PDF here!

Upgrade to PUM Companion!

If you liked PUM Lite, upgrade your Solo RPG experience beyond with PUM Companion, which also supports the app and the project.

PUM Lite save files are 100% compatible with PUM Companion, the full edition of the app. If you want to take your solo campaigns to the next level, PUM Companion offers:

• Multi-Log Journaling and Notes: Organize your games in separate log spaces and character tabs for better world building.
• Character Sheets and Image Editors: Create templates for character sheets and use the image editor to track your visual sheets and maps.
• PDF Reader & Sheet Conversion: View rulebooks inside the app and convert PDF pages into editable character sheets and maps.
• Custom Themes & 3D Dice: Personalize your workspace with 7+ themes and beautiful animated 3D dice.
• Productivity Tools: Manage reusable templates, bulk export entities, pin your favorite sheets, and organize your entities using Tags.
• Voice Notes: Record audio logs and play by voice directly inside your journal.
• Multi-Vault Support: Organize your games in separate folders/vaults.
  
• Cloud Syncing: Cross-sync your save games across all your devices using your own Google Drive or iCloud accounts.

👉 Upgrade to PUM Companion here!

Feedback

As this is a very new app and an entire new project, your feedback is absolutely important, welcome, and appreciated. Do not hesitate to drop a comment with your thoughts, but much better, join us on Discord to exchange ideas!

Join us on Discord

Technical & Safety Details

• Does NOT collect any user information
• Works fully locally and offline, exports save games as files
• Supports multiple screen sizes, larger screen allows expanded panels
• Please only download from trusted stores only

Credits

To my wife, Maria, for the UI design, and for the coding-master Jeremy, for the backend architecture.