DunMax: World Building

Obsidian Oak Digital

In-app purchases

About this app

DunMax is a worldbuilding app for Dungeon Masters, Game Masters, writers, and tabletop RPG creators. Build complete worlds for DnD, Pathfinder, or any TTRPG — generate NPCs, design cities, and craft rich lore in seconds. Stop scrambling for details mid-session. Start building worlds that feel alive.

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 with confidence.

Perfect for:
-Dungeon Masters & Game Masters prepping campaigns and one-shots
-Tabletop RPG players building character backstories
-Writers and worldbuilders crafting fantasy settings
-Solo RPG players and lore enthusiasts

POWERFUL AI GENERATION
-Customized recommendations based on everything you have made!
-AI Image Generation
-Create stunning character portraits, location art, items, and scene illustrations from simple descriptions. Choose from 6 art styles per creation type — 36 total options. See your world, not just imagine it.
-AI Voice & Audio Generation
16 unique AI voices bring your world to life. Generate dramatic narration, villain monologues, cryptic prophecies, and ambient storytelling. Play them at the table or use them for session prep.
-Custom Attributes
Add anything: political intrigue, cultural traditions, magical side effects, rumors, secret motivations, or tavern food ratings. Your world, your rules — and yes, custom attributes can be narrated too.

ORGANIZE YOUR ENTIRE WORLD
Everything lives inside Worlds. Each one holds:
Characters — NPCs, villains, allies, and legends with rich backstories and AI-generated portraits
Cities & Towns — From bustling capitals to forgotten villages, complete with districts and local flavor
Regions — Kingdoms, wildernesses, enchanted realms, and beyond
Factions — Guilds, cults, governments, and secret orders driving political intrigue
Events — History, prophecies, wars, and turning points on your world's timeline
Points of Interest — Dungeons, taverns, hidden shrines, and mysterious landmarks

No more scattered notes across apps and documents. Your entire world stays connected, searchable, and expandable.

WHY DUNGEON MASTERS LOVE DUNMAX
-Generate detailed NPCs in seconds with the built-in NPC generator
-Never say "Uh... I'll get back to you on that" again
-AI-assisted creativity that enhances your ideas, not replaces them
-Browse your creations offline for game night flexibility
-Clean, intuitive interface designed for quick session prep access

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.
The all-in-one NPC generator, campaign manager, and fantasy worldbuilding tool — built for tabletop RPG creators who value their time.

Download now. Build your first world in minutes.

Ratings and reviews

Had an issue with the app dropping all my gold. They did more than they had to in making it right for me. love this app as it frees up my time for running my world rather than building it.

cant make a world, i think due to the options being offscreen & the window not being scrollable to get at the options, same on social screen when pressing the button(top right) the dropdown options seem to continue off the bottom of the screen. would be fine if these windows were in their own scrollable box incase of scaling problems but until then i cant do step 1.

A decent AI World building app. But there is no capacity to create yourself. This app will perform all the aspects of world building you, Placenames, events, factions but if you want to create for yourself, you have to edit whatever the AI wrote for you. The generative AI costs coins to use and there are introductory missions that will give you coins but I didnt look at the coin purchase prices. This app is great for people new to worldbuilding or ttrpgs but not for those with existing worlds.

What’s new

Lots of improvements and changes to UI/UX