RimWorld RPG

A Tabletop Roleplaying Game of Survival, Drama, and Colony Management

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"You are stranded. You are lightyears from the glitterworlds, on a lawless frontier planet known as a Rimworld. There is no government here, no safety net, and no faster-than-light travel to take you home."

RimWorld RPG is a tabletop roleplaying game adaptation of the hit sci-fi colony sim. It translates the complex simulation of survival, psychology, and combat into a narrative-driven TTRPG experience.

🎨 Design Inspirations

This system draws inspiration from several excellent TTRPGs:

• Draw Steel — The "heroic roll" mechanic where rolls always produce meaningful results (Tiers of Success).
• Traveller — The Lifepath character generation system that creates deep backstories.
• Alien RPG — The "push your luck" Stress Die mechanic that adds tension and risk.

🚀 Key Features

🎲 The Story Die System

A unique 2d10 mechanic that prioritizes narrative outcomes over binary pass/fail results.

• Tiers of Success: Every roll results in a Struggle (success at a cost), Success, or Triumph (critical success).
• The Story Die: One of your dice (the Red Die) introduces Twists of Fate (unexpected boons) or Complications (narrative hurdles), keeping the story dynamic.

🧬 Lifepath Character Creation

Build deep, flawed, and unique colonists using a Lifepath System.

• Childhood & Adulthood: Combine backgrounds like Vatgrown Soldier or Caveworld Tender to determine stats.
• Traits: Gain gameplay-altering traits like Cannibal, Pyromaniac, or Kind.
• Incapable: Just like the game, some colonists simply refuse to do certain work (e.g., "Incapable of Violence").

🧠 Survival & Psychology

It's not just about hit points.

• Needs System: Manage Food, Rest, Recreation, Beauty, and Comfort.
• Mood & Mental Breaks: Push your colonists too hard, and they might snap—going on a Food Binge, wandering in a Daze, or starting a Social Fight.

🏰 Colony Management

• Base Building: Construct walls, killboxes, freezers, and hospitals.
• Work Priorities: Assign colonists to roles like Warden, Cook, or Hunter.
• Research: Advance through the tech tree from Neolithic bows to Spacer charge rifles.

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📚 Rulebook Contents

The rules are divided into modular chapters:

Chapter	Description
Chapter 1: Core Mechanics	The Story Die, Tiers of Success, and Time.
Chapter 2: Character Creation	The Lifepath system, Attributes, and Traits.
Chapter 3: Skills & Resolution	Detailed skill uses and social interactions.
Chapter 4: Combat & Survival	Combat rules, Needs, Mood, and Mental Breaks.
Chapter 5: Equipment & Crafting	Weapons, Armor, and Economy.
Chapter 6: Colony Management	Base building and work priorities.
Chapter 7: The Rim	Biomes, Factions, and the Bestiary.
Chapter 8: The Storyteller	GM guide for running events and raids.

Note: Some chapters are currently being drafted and linked files may be placeholders.

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🛠️ Included Tools

This repository includes JavaScript utilities to help run your game:

• scripts/build_rulebook.js: Generates the single HTML rulebook file.
• scripts/lifepath_generator.js: A script to randomly generate colonists with valid attribute combinations.
• scripts/storyteller_sim.js: A simulation tool for the Storyteller system to generate random events and raids.

📦 Getting Started

1. Clone the repo:

   git clone https://github.com/Vinashu/RimWorldRPG.git
   cd RimWorldRPG

2. Generate Rulebook:

   node scripts/build_rulebook.js

   Open output/RimWorldRPG_Rulebook.html in your browser.
3. Read Chapter 1: Start with chapters/chapter_01_core.md or the HTML rulebook.
4. Create a Colonist: Run node scripts/lifepath_generator.js or follow Chapter 2.
5. Survive: Gather your friends, pick a Storyteller, and try not to become a cowboy hat.

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🤖 AI Assistance Disclosure

This project was developed with the assistance of Google Antigravity and various AI agents (primarily Gemini). These tools were used to:

• Refine and organize the rulebook content
• Check grammar and spelling
• Ensure consistency across chapters
• Verify alignment with the source material (RimWorld Wiki)

The core game design, creative decisions, and overall vision remain the work of the human author.

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📄 License & Legal

Code

The software tools and scripts in this repository (lifepath_generator.js, storyteller_sim.js) are available under the MIT License.

Game Content & IP

This project is a fan-made Tabletop RPG adaptation of RimWorld.

Portions of the materials used to create this content/mod are trademarks and/or copyrighted works of Ludeon Studios Inc. All rights reserved by Ludeon. This content/mod is not official and is not endorsed by Ludeon.

This project is non-commercial and free to use. It is not affiliated with Ludeon Studios.