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  • DunMax: D&D World Builder screenshot 1
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About DunMax: D&D World Builder

DunMax is the AI-powered worldbuilding app for Dungeon Masters, Game Masters, writers, and tabletop RPG creators. Build complete D&D worlds, generate NPCs, design cities, and craft rich lore—all in seconds.
Stop scrambling for details mid-session. Start building worlds that feel alive.
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BUILT FOR DUNGEON MASTERS & CREATORS
Whether you run Dungeons & Dragons, Pathfinder, or any tabletop RPG, DunMax gives you the tools to create faster and improvise less.

Perfect for:
- Dungeon Masters & Game Masters prepping campaigns
- Tabletop RPG players building backstories
- Writers crafting fantasy worlds
- Worldbuilders and lore enthusiasts

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ORGANIZE YOUR ENTIRE WORLD
Everything lives inside Campaigns. Each campaign holds:

Characters: NPCs, villains, allies, and legends
Cities & Towns: From capitals to forgotten villages
Regions: Kingdoms, wildernesses, and beyond
Factions: Guilds, cults, governments, and secret orders
Events: History, prophecies, and turning points
Points of Interest: Dungeons, taverns, and mysterious landmarks

No more scattered notes. Your world stays connected and expandable.
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POWERFUL AI GENERATION

Image Generation
Create stunning AI art for characters, locations, items, and scenes. See your world—not just imagine it.

Audio Generation
Generate dramatic narration, villain monologues, cryptic prophecies, and ambient storytelling. Bring sessions to life.

Custom Attributes
Add anything: political intrigue, cultural traditions, magical side effects, rumors, secret motivations, or tavern food ratings. Your world, your rules.
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WHY DUNGEON MASTERS LOVE DUNMAX
Generate detailed NPCs in seconds—not hours
Never say "Uh... I'll get back to you on that" again
AI-assisted creativity that enhances your ideas
Works offline for game night flexibility
Clean, intuitive interface designed for quick access
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YOUR WORLDS DESERVE BETTER TOOLS
Worldbuilding should feel exciting, not exhausting. DunMax handles the tedious parts so you can focus on what matters: telling unforgettable stories.

Download now. Build your first world in minutes.
Create boldly. Build endlessly.

What’s new

Version 1.2.0 · Updated August 22, 2026

lots of changes coming in this version! - Updated to always use latest and more efficient models. Insight has been deprecated. - You can now manually add custom creations. This applies to characters, cities, pois, regions, factions and events. - All content now have a 'history/backstory' attribute added whenever they are made. - You can now export Cards for sharing with customized content (check it out!)

User reviews

Richard Issa
Richard Issa
Best app ever. It helps so much with the creation process and I am able to create vast sprawling worlds filled with characters that feel alive. Its amazing

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