DunMax: World Builder
Deep AI Fantasy World Building
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Build immersive worlds in minutes. Generate NPCs, cities, factions & lore, almost with curated recommendations. A dungeon master's ultimate world building tool!
DunMax is the AI-powered worldbuilding companion for Dungeon Masters, Game Masters, writers, and tabletop RPG creators.
Build complete campaign worlds. Generate unforgettable NPCs. Design cities, factions, and lore—all in seconds instead of hours.
No more frantic improvisation. No more "I'll get back to you on that." Just rich, detailed worlds ready when you are.
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BUILT FOR THE WAY YOU PLAY
Whether you're running Dungeons & Dragons, Pathfinder, or your own homebrew system, DunMax adapts to your creative style.
Perfect for:
- Dungeon Masters prepping weekly sessions
- Game Masters running long-form campaigns
- Players crafting deep character backstories
- Writers building fantasy worlds
- Worldbuilders obsessed with lore and detail
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YOUR WORLD, FULLY ORGANIZED
Everything lives inside Campaigns. Each campaign holds:
Characters - Heroes, villains, allies, shopkeepers, and legends
Cities and Towns - From sprawling capitals to forgotten hamlets
Regions - Kingdoms, wildernesses, planes, and realms
Factions - Guilds, cults, noble houses, and secret orders
Events - Wars, prophecies, festivals, and turning points
Points of Interest - Dungeons, taverns, temples, and mysteries
No more scattered notebooks. No more lost sticky notes. Your entire world - connected, searchable, and ready to expand.
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POWERFUL AI CREATION TOOLS
Image Generation
See your world, don't just imagine it. Generate stunning character portraits, dramatic landscapes, mysterious locations, and iconic items. Every image captures the tone of your world.
Audio Generation
Bring moments to life. Create villain monologues, cryptic prophecies, tavern rumors, and narrative voiceovers. Drop them into your sessions for instant immersion.
Custom Attributes
Your world has unique details. Add political intrigue, cultural traditions, magical side effects, secret motivations, regional cuisine, or anything else that makes your setting breathe. No limits. No judgment.
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WHY DMs CHOOSE DUNMAX
- Generate detailed NPCs in seconds, complete with personality, goals, and secrets
- Prep sessions in minutes instead of hours
- AI that enhances your creativity without replacing it
- Intuitive interface designed for quick mid-session access
- Your data stays organized as your world grows
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WORLDBUILDING SHOULD BE FUN
You became a DM to tell stories, not to drown in prep work.
DunMax handles the tedious parts so you can focus on what actually matters: surprising your players, building tension, and creating moments they'll talk about for years.
Download DunMax. Build your first world in minutes.
Create boldly. Build endlessly.
Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Privacy Policy: https://www.dungeonessmaximus.com/privacy
Large update coming in!
- Massive improvements to the World Generator. It also comes with some recommendations on what to build next.
- New 'AI Recommendations' section which uses your current world, all the things inside it as well as your campaign notes to create at least 10 different recommendations for you to build next
- New 'Tree' feature which shows you all your interconnected items in one place
- Improvements to the tutorial and other UI elements
- Ability to manually link items together
- Improvements to the free tier, now with more access than ever!
- Bug fixes
The developer, Obsidian Oak Digital, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Contact Info
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Obsidian Oak Digital LLC
- Size
- 74.8 MB
- Category
- Entertainment
- Compatibility
Requires iOS 15.6 or later.
- iPhone
Requires iOS 15.6 or later. - iPad
Requires iPadOS 15.6 or later. - iPod touch
Requires iOS 15.6 or later. - Mac
Requires macOS 12.5 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
9+
- 9+
- Infrequent
Guns or Other Weapons
- In-App Purchases
Yes
- Premium Subscription (Monthly) $9.99
- Premium Subscription (Annual) $99.99
- Epic Chest $19.99
- Chest of Gold $9.99
- Premium Subscription (Annual) $99.99
- Premium Subscription (Monthly) $9.99
- Pouch of Gold $4.99
- Copyright
- © 2025 Obsidian Oak Digital LLC