Choose the Level. Enter your map's URL and click Load Map or pick one from the menu. When you see the map, click in rooms to place room numbers and drag to reposition. Contents for rooms will randomly generate as you place them. The node editor will let you edit or reroll contents.
Re-skin creatures or replace other repeating text in room descriptions and notes - there is no Undo so be careful.
Replace with in Notes and all Location Descriptions.DunMap saves to your browser's "LocalStorage" not to a server. If you need to clear all cached data in your browser, please export a backup file first, and import it when you need it again. Clearing all LocalStorage will wipe out any saved and edited dungeons.
Split out the notes field to separate fields, as a step towards better UI layout and data update.
I will be rescanning some of the maps I linked in the menu to make them a better fit here.
EA: Ed Allen
BL: British Library Flickr of free images from old books
Comments welcome at the Ruminations blog linked above. If you like hacking, take a look at the dungen_stock.js file first. It's pretty easy to customize content there. DunGen is now up on Github.