Created for /r/proceduralgeneration's monthly challenge.

Use the context menu to access all the options of the generator.

The non-itch version of the generator allows you to copy a link to a specific dungeon to share or to save and restore it later.

Made with Haxe + OpenFL.

You can use images created by the generator as you like: copy, modify, include in your commercial rpg adventures etc. Attribution is appreciated, but not required. Please consider supporting this project on Patreon☕!

Development log


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I find this difficult to use on an iPad. Any tricks to using on this device, or should I just keep to using it on my iMac (which works fine).

I tried to make this generator usable on mobile devices, but originally it's designed for desktops (with a large enough screen, mouse, keyboard) and desktops remain my priority. Do you find any specific features particularly uncomfortable to use?

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When I use the non-itch version, the dungeon generated and the descriptive notes don't always fit on the screen. Using the version I was able to use  'CMD' & '+' or 'CMD' & '-' to adjust the browser screen size to zoom in/out to fix the 'fitting on the screen' issue, but not on the non-itch version.  There also don't seem to be instructions visible on the iPad view on how to interact with the generator.

Update: to clarify, I have a keyboard with my iPad. It has become my main digital tool (partly because my computer is quite old now).


how do i save the map on my computer

  • To save a map for loading it later in the generator you need to use the non-itch version. Just copy the link from the browser's address bar.
  • To save a map as an image, open the context menu and choose Save as PNG or Export as > PNG.../SVG.
  • To save a map for loading it in an supporting dungeon editor, choose Export as > JSON in the context menu.
  • To save a map for loading it in MagicaVoxel ,choose Export as > VOX in the context menu.

Are circles encounters?


hi :) any chance u have "adding more randomized objects to rooms" in your ToDo list for this generator? or maybe increase/decrease the density of the objects? 

I mean like random boxes, beds, coins, bottles, books, wardrobes, etc :)

I am going to add a couple of new types of objects, but I don't want to spawn too many object instances because I would have to know the purpose of every room. For example, it's OK to drop some boxes in any room but a bed can be only in a living quarter. 


Hiya, are you perhaps working on a map tool that could be customized make own walls and stuff and so on.. I like these random generators really but it would be fun to be able to modify something when it gets close to what I like .. 

Currently I have no plans to turn it into an editor, but there are at least a couple of editors capable of importing maps created in the generator.


btw are your map generators ok to be used in gamedev end projects? I mean maps made in them

Of course 👍


Oh cool lovely to know! I really like your map generators but to be honest you have lots of them! They are very popular too!


Very awesome. I am wondering if it's possible to have more natural-looking walls and floors? Like a cavern. And/or to have gaps and holes in the floor? Thank you for your generators! They are wonderful.

Thanks! Something like this is on my list. But in this generator I can only make walls slightly rougher (that's one of limitations of this particular algorithm) and I'm not sure it'll make dungeons look like caverns. Another option is to make a new generator (or an editor) and that's obviously a much bigger task.


Hey Watabou! Loving htis new app! 

Some feedback i would give would be to allow the grid-scale, even if a little limited. 

Like, a corridor beeing 1x1 Square or 2x2 square. 

That's not a big problem for, exemple, VTTs where you can export the image without any grid and adjust the grid there, but more options, more customizations are normally always good! 

Anyway, really loved the app!

Last thing, and, this may be a stupidity of mine, and feel free th point it out but, the tags on the generation tab, aren't as clear as they may seem. 

Maybe having a mouse-hover explanation of what kind of "thought" that tag will go thorugh, like what is a compact dungeon, what makes a colonnades, or heck, even some simple things like T reasure. Does it generate a room with treasure or the whole dungeon will be like a vault of treasures? 

I know, it may be stupid, and entitled, and i truly love your work. Your work helped me on SO MANY FREAKING DND SESSIONS where players randomly walk into a town i haven't prepared nad your medieval fantasy city generator saved me, or the villlage generator.

And this one, i just feel it could have a little more explanation on what each tags what options do you know? Some are pretty organic, while others, aren't.

Anyway, sorry to bother, and any grammar errors. English isn't my native ^^"


Regarding the grid: do you mean just to add an ability to make it smaller (like in Procgen Mansion)? I can do that, the only problem is that a smaller grid will make maps even noisier.

Regarding the tags: 

You can get some very short info about what effect each tag has by shift-clicking it.

I wrote about this feature in the release post when it was implemented, but it's not mentioned anywhere else. I will fix it by adding a hint text in the Tags window.


Ohh thanks! I really didn't knew on the shift thing =P
Hmm the thing about the grid, is that, sometimes we generate a map that is just juicy perfect. BUT as the grid is a 5x5 square per tile, it end up beeing too small sometimes.
The way i've worked around it for now, is exporting gridless, and importing into Roll20 (Soon Foundry, because... Ican't with some roll20 bs anymore) and had to spend some time trying to align it. 
Having the option to export the with an grid already formed size-appropriated grid (like, instead of a 5x5 corridor with one square, having two squares making it 5x10 for exemple) would easier the transition. 
But, it may be just too much work for not much of a gain, and, as you pointed out, make the map too noisy. 
It also may be just my mind that gets that basic mindset of 1 square =  5x5ft ^^" (Through the details, that are generated, debris and the like, seem to assume a that kind of scale.)

Anyway, really loving your apps, seriously, you're a godtier on making those kind of apps.


Great resource - beautifully executed!


This is such a great resource and I use it all the time!

However, you know what else would be super useful? A tool like this that could generate a single story, 3x3 grid of 9x9tile geomorph maps in different styles; Cave, Castle, City, and different complexities; minimal, simple, complex, in your OPD art style.

The ability to generate clever clutter and debris would really be top notch!

Here’s a great resource on Geomorphs that you’ve probably already seen, but just in case… Dyson Logos Geomorphs


In my search for such a tool I have come across this! Which is nearly exactly what I was hoping for. It would be nice to be able to style it, but darn it’s handy.

Nice! But what you are talking about is rather "geomorph generator" than "dungeon generator", isn't it? I mean the point of geomorhs is to be able to assemble a complex map out of them manually, if you're using an app for that then it doesn't matter are there geomorphs inside or not.


Can we get the old style presets back? I don't like shadows, I just want the old hand-drawn look back.


The shadow can be disabled either by unchecking Layers > Shadow in the context menu or by setting its color to white.
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Hello Watabou could you make a car generator like your tank generator but from profile i want to make 3d model of cars for a game i'm making (for now i'm really at the begining) so i do not want to copy real car brand to make my vehicle (l'il post this in comment in different webpage of your generator so you will find my comments more easily)

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There is a limit, otherwise these dungeons would be infinite, wouldn't they? If that's what you're asking about.

Hi how do I use this?


Click with right mouse button. You will see options to set parameters to create new dungeons.


This is a wonderful tool!  Thanks for making it!

Please consider a notes style where the room numbers are placed next to the rooms, but outside them.  That way the maps could be used in virtual table tops without having to edit the numbers out.


That`s great!


you are best! But… its only my opinion,can you do something similar to hex? I love hexes, grow up on fallout type games :p

Thanks! Do you mean just overlaying more or less the same dungeons with the hex grid? It's of course possible but it would be less useful (because I can't really align a rectangular plan to the hex grid), wouldn't be? If I ever make a cave generator, I'll do it using the hex mesh (as I did in Perilous Shores).


Great Update! However, is there any way to get old water back? I much prefer the cleaner look of the old water. It had a unique style to it that I’ve come to really like.

I will probably add some customization parameters for the water. With the right values they will give the old look to the water.


svg...thank you


Hey watabou! Any way to make this work on ipad's? I have the site opened on chrome and safari but the dungeon is always cropped and there is no way to zoom out or change any settings. I wouldn't mind having it purely random if I could at least see the whole dungeon.
Thank you :) 

Zooming out would help but for some reason neither Safari nor Chrome provides controls for that (or is it only my ipad? it's very old). You can try this non-itch version of the generator:  Please note that this version is WIP and it contains some undebugged features.


Zooming out works on other pages in my chrome application on my I pad pro.
The new link works well! Shame that I can pop out the menu If I hold down my finger on some text on screen but every finger stroke creates a new dungeon...So If I can't open the menu without switching dungeon.
Any way to add a lock button or a solution? :) 

Opening the context menu with long press is one of those undebugged features. It should work normally in the final version when it's released.


Would you consider adding a number label to each room / corridor?  I did some live youtube vids using the generator and filling the dungeons but struggled because I had to edit on more number labels mid-stream. Would be great to get more numbers on to cover ever area. Thanks 

You can add numbers to every room (but not corridors) by choosing Notes mode > Numbers. This hides the notes themselves of course.


OK Thanks but its not on the corridors? I have started to write a full adventure here live on youtube using your maps and I use gimp  to add numbers to corridors so I can reference traps/doors etc.   Would be amazing to get corridor numbers to :) 


Would like to know what font this uses for numbering and text so I can expand it out seamlessly.


Everything else: (regular, italic, extra-bold)

In the next update it will become possible to use custom fonts.


OH thank you so much!


some spelling/grammar errors, ie. "A strange, slightly sprakling ring" or "A weird, covered in runes goblet",  and whats with all the keys? its still great though


Would love to see this be able to generate caves.


This is amazing. Thank you


Suggestion: export as markdown

## Pyramid of Barhogazu

Since the fall of Barhogazu the pyramid has changed hands many times. Recently it was squatted by a band of bandits.

### Room 1

A massive stone double door to the north.

### Room 2

A dying dwarf, gems among his belongings.


It should be very easy to implement, but why would anyone need these notes as a... separate piece of data?


I've seen people take a OPD and build out a more complete dungeon adventure in something like the Homebrewery or DM Binder.

Having the room descriptions be available in a useful  text format would save a lot of tedious retyping.

Even if the room descriptions were made selectable text (like title and story are), it would still entail a lot of repetitive copy/pasting.

OK, I'll consider it 👍


Seconding SVG export, but also, possibly allow a transparent background color?  I tried #FFFFFF00 but not accepted (wasn't really expecting it to but thought i'd try).  Perhaps just a checkbox for it.

"Export as PNG..." (vs. "Save as PNG") produces images with transparent background.  SVG export is coming soon(ish).


ahh okay, I wasn’t 100% sure what the difference was. Good to know!


do not have svg?

not yet


Man. What a great tool. I am making a grid base game and I want to implement this tool to generate maps. The thing is I already know how to work with json but to make it a little easier, would you mind explaining the struct? . I mean what is "rects"  for? And what the variables : x, y, w, h mean exactly in the dungeon. Thank you

These dungeons are made of rectangles and in JSON they are described in rect objects. x and y are the coordinate of the top-left corner of a rectangle, w and h are its width and height.


At the end I was playing around with the rpgmap tool from deepnight and  I understood the whole thing. Thank you anyway and so much again. When I finish it I show it to you


the generator displays some descriptions before others, ie. "A mysterious, covered with runes looking goblet on a pedestal" should be  "A mysterious looking goblet covered with runes on a pedestal"

Are you sure it wasn't "looking glass"?


something like that


This is great!

One suggestion:  allow the user to specify the number of entrances (as a positive, nonzero integer).  Thanks!


Odd question but whats the point of exporting it as a JSON file?


There are a couple of dungeon editors capable of importing these JSONs.


Am I supposed to be able to import it back into this one though? Cause I had a dungeon I wanted to poke around at and make changes to later so I exported the .json file but now I’m John Travolta in that Pulp Fiction gif.


No, otherwise I would call this feature saving (and loading), not exporting. But you can import your exported dungeon into Mipui or RPG Map.


You can edit the title of the dungeon and its synopsis, but would it be possible to edit the room notes as well? They're great but sometimes I just want to add something to them or tie parts together more.

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Right click on the note and select edit note.


This generator is awesome!

One question though: is it the generator's or the itch's quirk that it can only be launched in landscape mode? I sometimes go here from my phone and when it's all wide and really short it's rather inconvenient 


Thank you!

So far I can't find a way to make the generator work with auto-rotate, indeed it's always landscape on mobiles. I think derives this from dimensions provided for the desktop version. Sorry about that. In the future I'll try to make it more mobile-friendly with access to the context menu (e.g. to hide the title) and better scaling.

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Hey watabou, nice dungeon generator! I don't know how you made that but... yea. Also, really liked the customization part of the generator, it adds a lot of variety. Plus, i think that it would be great if i could download it, to, you know, don't forget about it's existence.


Excellent tool, thanks for this. 

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sorry if this is a stupid question, i am stupid, but where do I install or use this?


right click on the image, and you will see the context menu


You don't need to install it, it runs in your browser.


ok now i see what it is thank you for helping me figure it out


Hi Watbou,

Any update on posting the source on or ?

It would be great for me to contribute to the project.



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Hello. In the past, I have already used this tool of yours. Why is it no longer possible to change the parameters of map creation? I’m not interested in descriptions, but it seems that the only way to generate new maps is to reload the web page.


Hi. For me it works normally. Also I haven't updated this generator since last October, so it's not like a broken version was uploaded recently or something. Doesn't "New dungeon" item in the context menu work for you?


No :/


That's weird. Could you check your browser console? Are there any messages about errors or something?


Try right-clicking on the map to get the menu up?


How did you get so firmly in my lazy DM head and make such an easy-to-use tool that I have been looking for, for so long?
Thank you so much! Really keen to see how it grows with custom notes etc. will be checking out your patreon :)


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