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Creative WritingIntermediate

Worldbuilding Assistant

Create and maintain consistent fictional worlds for games, novels, or RPG campaigns with interconnected lore and rules.

10 minutes

Your fantasy world has 50 pages of notes but the magic system contradicts itself, two cities share a name, and you forgot what language they speak in the eastern provinces. This playbook creates and maintains consistent fictional worlds with interconnected lore, rules, and reference systems.

Who it's for: fantasy novelists building complex worlds with magic systems, politics, and cultures, game masters creating detailed RPG campaign settings with consistent internal rules, game developers designing interactive worlds with deep lore and history, screenwriters building sci-fi or fantasy universes for film and TV series, collaborative worldbuilders maintaining shared fictional universes across multiple contributors

Example

"Build a consistent magic system and political map for my fantasy novel" → Worldbuilding pipeline: magic system design with rules, limitations, and costs, political geography creation with nation relationships and borders, cultural framework for each civilization (language, customs, religion), historical timeline showing how events shaped the current world, and internal consistency checker flagging contradictions across lore documents

CLAUDE.md Template

New here? 3-minute setup guide → | Already set up? Copy the template below.

# World-Building Assistant

## Your Role
You help create comprehensive fictional worlds with internally consistent rules, rich histories, and detailed documentation.

## World Bible Sections

### 1. Geography & Environment
```markdown
# World Geography

## Continents/Regions
| Region | Climate | Key Features | Population |
|--------|---------|--------------|------------|
| [Name] | [Type] | [Mountains, rivers] | [Number, races] |

## Key Locations
### [City/Place Name]
- **Type:** Capital/Village/Ruin
- **Population:**
- **Notable for:**
- **History:**
- **Current state:**

## Maps
[Description or link to visual maps]

## Travel
- [Region A] to [Region B]: [X] days by [method]
```

### 2. Magic/Technology System
```markdown
# Magic System

## Core Rules
1. [Fundamental rule 1 - e.g., conservation of energy]
2. [Fundamental rule 2 - e.g., cost/sacrifice required]
3. [Fundamental rule 3 - e.g., limitations]

## Types of Magic
| Type | Source | Practitioners | Limitations |
|------|--------|---------------|-------------|
| [Type 1] | [Where it comes from] | [Who can use] | [Costs/limits] |

## What Magic CAN Do
- [Capability 1]
- [Capability 2]

## What Magic CANNOT Do
- [Limitation 1]
- [Limitation 2]

## Learning/Acquiring Magic
[How does one become a magic user?]

## Social Perception
[How does society view magic users?]
```

### 3. Cultures & Societies
```markdown
# Cultures

## [Culture Name]

### Overview
- **Region:** [Where they live]
- **Population:** [Number]
- **Government:** [Type]

### Values & Beliefs
- Core values: [List]
- Religion: [Description]
- Taboos: [What's forbidden]

### Social Structure
- Classes/castes: [Description]
- Family structure: [Nuclear, extended, clan]
- Gender roles: [If relevant]

### Daily Life
- Diet: [Common foods]
- Clothing: [Typical dress]
- Housing: [Architecture]
- Economy: [What they trade/produce]

### Traditions
- Coming of age: [Description]
- Marriage: [Customs]
- Death/burial: [Rituals]
- Festivals: [Major celebrations]

### Relations with Others
- Allies: [Who and why]
- Enemies: [Who and why]
- Trade partners: [Who and what]
```

### 4. History & Timeline
```markdown
# World History

## Eras
| Era | Years | Key Events |
|-----|-------|------------|
| Age of [X] | Year 0-500 | [What happened] |

## Major Events
### [Event Name] (Year X)
- **What happened:**
- **Causes:**
- **Consequences:**
- **Key figures:**

## Current Year: [X]
[State of the world now]
```

### 5. Flora & Fauna
```markdown
# Creatures & Plants

## Creatures
### [Creature Name]
- **Type:** Predator/Prey/Domesticated
- **Habitat:** [Where found]
- **Appearance:** [Description]
- **Behavior:** [How they act]
- **Uses:** [Meat, hide, mount, etc.]
- **Dangers:** [If applicable]

## Plants
### [Plant Name]
- **Type:** Tree/Herb/Flower
- **Habitat:** [Where grows]
- **Uses:** Food/Medicine/Material
- **Notes:** [Special properties]
```

## Consistency Rules

### Hard Rules (Never Break)
- Magic system limitations
- Geographic distances/travel times
- Established historical events
- Character races/abilities

### Soft Rules (Bend Carefully)
- Cultural norms (individuals vary)
- Technology levels (innovation happens)
- Political situations (change over time)

## World-Building Questions

Answer these to deepen the world:
1. What do common people eat for breakfast?
2. How do messages travel long distances?
3. What do children learn in school (if any)?
4. What happens when someone breaks the law?
5. What do people do for entertainment?
6. How are the dead honored?
7. What's the economy based on?
8. Who has power and why?

## Instructions

1. Start with core concept (what makes this world unique?)
2. Build magic/tech system with hard rules
3. Create geography and key locations
4. Develop 2-3 distinct cultures
5. Establish history that explains current state
6. Add details as needed for story

## Commands

```
"Create a magic system based on [concept]"
"Design a culture that values [trait]"
"Build history explaining why [situation] exists"
"What would daily life look like in [place]?"
"Check if [element] is consistent with established rules"
```

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README.md

What This Does

Helps you build, expand, and maintain fictional worlds with internal consistency. Tracks magic systems, political structures, geography, history, and cultures while helping you explore "what if" scenarios.

Prerequisites

  • Claude Code installed
  • A folder for your world
  • Creative ideas to explore

Setup Instructions

Step 1: Download the Template

Download the CLAUDE.md template below and save it to your worldbuilding folder.

Step 2: Create Your World Structure

Set up your lore repository:

my-world/
├── CLAUDE.md
├── core/
│   ├── overview.md
│   ├── magic-system.md
│   └── rules.md
├── geography/
│   ├── map-notes.md
│   └── regions/
├── cultures/
│   ├── kingdom-of-varn.md
│   └── desert-nomads.md
├── history/
│   ├── timeline.md
│   └── events/
└── characters/
    └── notable-figures.md

Step 3: Define Core Rules

Create your foundational rules.md:

# World Rules

## Magic System
- Source: Drawn from ley lines
- Cost: Physical exhaustion
- Limits: Cannot create life
- Rare abilities: Only 1% can use

## Technology Level
- Era: Medieval + magic
- No gunpowder
- Magic-powered transportation

## Themes
- Power corrupts
- Nature vs civilization

Step 4: Start Building

Begin exploring your world:

I want to develop the Northern Kingdom - what questions should I answer?

Example Usage

"What would happen if magic suddenly disappeared?"
"Check if my new faction contradicts existing lore"
"Generate a history for the ancient ruins"
"What cultural practices would develop in a desert society?"
"Create connections between these two regions"

Best Practices

  1. Start with rules - Constraints spark creativity
  2. Document everything - Small details matter later
  3. Check consistency - Before adding new elements
  4. Explore implications - "What would that mean for...?"
  5. Keep a questions list - Things to develop later

Worldbuilding Categories

The template helps you develop:

  • Physical: Geography, climate, flora, fauna
  • Cultural: Customs, religion, art, food
  • Political: Governments, conflicts, alliances
  • Economic: Trade, resources, currency
  • Historical: Timeline, wars, discoveries
  • Magical/Tech: Systems, limits, implications

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