Characters
Give the next person your party meets a reason to matter. Create NPCs with personalities, motivations and backstories, then edit the details to fit your game.
Try an idea like: A friendly innkeeper with an inconvenient secret.
A closer look at DunMax
Your ideas. A world that holds them together.
Dungeoness Maximus (DunMax) is an AI-assisted worldbuilding app for Dungeon Masters, GMs and fiction writers. Generate characters, places and lore, customize what comes back, and organize your creations inside connected worlds.
- Available on
- iOS and Android
- Built for
- Worldbuilding and writing
- Connection
- Cloud-based; internet required
- Made by
- Obsidian Oak Digital LLC
Start with a spark
Six creation types. Notes for everything else.
Describe an idea in plain language, generate a draft, then make it yours. You can also write entries manually and edit generated fields. These examples are starting prompts, not fixed templates.
Cities
Build places your players can explore, with local character and written detail you can develop as the campaign grows.
Try an idea like: A river port where two rival guilds share an uneasy truce.
Regions
Set the broader scene with geography, history and atmosphere. Use regions to give nearby places a shared identity.
Try an idea like: An island chain shaped by the ruins of a fallen kingdom.
Factions
Create groups with goals and relationships that give your world room for conflict, alliances and unexpected loyalties.
Try an idea like: A scholarly order whose research has become a political problem.
Events
Keep track of the moments that shape your setting, from ancient conflicts to the festival happening next session.
Try an idea like: A coronation interrupted by the return of a missing heir.
Points of interest
Fill the space between destinations with locations worth investigating, from quiet taverns to forgotten shrines.
Try an idea like: A roadside chapel with a door that only opens in moonlight.
Notes
Keep your own ideas beside your creations: session recaps, loose plot threads, homebrew rules and dialogue you want to remember.
Try an idea like: The promise the party made three sessions ago.
More than a collection of entries
Keep the connections close.
A character belongs to a city. A faction shapes an event. Link creations together so those relationships stay easy to follow while you build and run your world.
Generate with your world in mind
Use campaign references and existing creations as context for new ideas. Your established lore gives the next draft a starting point; you stay in control of what fits and what needs editing.
Find your next step
Recommendations draw on what you have already built to suggest where to go next. Use them when you have a setting full of possibilities but need a fresh direction.
Your rules, your details
Give every creation room to grow.
Custom attributes
Add the details your setting needs: homebrew stats, a character’s catchphrase, a tavern menu or a piece of local history. Custom attributes let your world go beyond the standard fields.
Works beyond D&D
DunMax is system-agnostic. Use it for D&D, Pathfinder, other tabletop RPGs or fiction writing. It helps you develop and organize narrative material; you choose the rules and the story.
A practical session-prep workflow
- Create a world to hold your ideas.
- Describe the character, place or event you need.
- Review and edit the generated draft.
- Add attributes, images or narration as needed.
- Link related creations and keep your notes alongside them.
Make it seen. Let it be heard.
Art and voice for the world you imagine.
36 art styles across six creation types
Choose from six art styles per creation type. Add a portrait, a place or a scene that helps you picture what you are building, from fantasy and anime to ink and watercolor.
16 narration voices
Turn written material into audio for dialogue, descriptions and lore. Prepare a speech before a session or give an important discovery a voice at the table.
Free, Premium & Gold
Choose how you build.
DunMax is free to download. Gold pays for AI generation; Premium adds subscription benefits and a monthly Gold allowance.
Start free
Create up to three worlds. Explore the app and organize your ideas before deciding how you want to keep building.
Go Premium
USD $6.95 per month, or $69.95 per year. Premium includes 700 Gold each month, unlimited worlds and content export.
Export text to your clipboard for use elsewhere, or create shareable cards with customized content.
Purchase Gold separately
Prefer pay per use? Buy Gold without a subscription for AI generation. Check the displayed Gold cost in the app before generating text, images or narration.
DunMax is cloud-based and requires an internet connection to access, create and edit your worlds. Read the FAQ for more practical questions or contact support.