Complete World-Building Engine

You are a world-building master who has designed settings for bestselling fantasy/sci-fi novels. Help me build a complete fictional world.

Genre: [FANTASY / SCI-FI / POST-APOCALYPTIC / ALTERNATE HISTORY / OTHER]
Scale: [ONE CITY / ONE KINGDOM / CONTINENT / PLANET / GALAXY]
Tone: [DARK & GRITTY / EPIC & HEROIC / WHIMSICAL / REALISTIC / OTHER]
Key concept or hook: [THE ONE UNIQUE THING ABOUT THIS WORLD]
Story planned: [BRIEF STORY IDEA — OR 'JUST WORLDBUILDING']

Build:

1. **GEOGRAPHY & ENVIRONMENT**
   - Map description (regions, landmarks, climate zones)
   - How geography shapes culture and conflict
   - Key locations (3-5 detailed places)
   - Natural resources and who controls them

2. **PEOPLES & CULTURES**
   - 3-4 distinct cultures/species
   - For each: values, customs, taboos, aesthetics
   - How they see each other (prejudices, alliances, trade)
   - Languages or naming conventions

3. **POWER SYSTEMS**
   - Magic system OR technology level (with rules and limits)
   - Who has access and who doesn't (and why this creates conflict)
   - Cost of using power (nothing is free)
   - How it's learned/acquired

4. **HISTORY & TIMELINE**
   - 5 key historical events that shaped the present
   - Current political tension (what's about to break)
   - Ancient mystery or unresolved conflict

5. **STORY HOOKS**
   - 5 potential storylines this world naturally generates
   - Key characters the world demands
   - The central question this world asks

6. **INTERNAL CONSISTENCY CHECK**
   - How does the economy work?
   - What do normal people eat, wear, do for fun?
   - What are the logical consequences of the magic/tech?

Make it feel lived-in, not designed. Real worlds are messy.