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I love this editor so much. I am really fascinated with how the maps have an architectural quality to them. Parts feel very well planned, and then other parts feel like they had to break the rules as buildings often do. Do you ever explain how you made this? I'd be very interested to know. Thanks.


I explained this somewhere, but right now I can't remember where. Anyway, the idea is very simple: the generator builds imperfectly symmetrical dungeons. Every dungeon is grown recursively and when a room needs to be expanded, usually identical wings are spawned to the left and to the right from it. Usually, but not every time - occasionally these wings are not identical, but still (imperfectly) symmetrical. How often this happens depends on the desired level of chaos. This all is supposed to produce something in between boring perfectly symmetrical cross-like or T-like plans and too chaotic layouts typical for more common algorithms. That's it.


Hello,  I wanted to ask if you´re getting any money from this . I got it as a gift and I can provide photo proof of the pages. it´s using your generator to make dungeons and then they sell them off as original material. I think you should know. Hope you get to the bottom of the issue and are recognised for your work. Let me know if you need any extra info


Hi! Yeah, I've seen this thing. No, I don't get any money from it. It's not nice, but technically it doesn't violate that informal license ("you can use images created by the generator as you like... attribution is... not required"). The problem here is not that someone makes money from it and I don't, but that this book is actually a fraud, the "author" sells stuff which is supposed to be free. There are a couple of reviews mentioning this fact, but unfortunately they are not top voted.


OK, I´ll try and report it to amazon (Amazon prints it for them too). Wish you could get recognised for your work. 

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Hello. I'll say right away that that isn't me, but I understand why they'd sell them.

Fraud is a strong word and I don't think it applies because you never say anywhere on the generator details not to sell them and you imply that you're ok with them being used commercially with the way you phrase things. You say credit is not required either. Theres at least 1 post on reddit that I just found that comes to the same conclusion as well.

To have these words up there for all this time, since October 2019 according to 'TheWaybackMachine', and then voice anger about it and possibly condone some action against it when you find out someone took advantage of something you say is ok to take advantage of...

 Wouldn't that in itself be the fraud or some kind of trickery? Thats likely how it would feel from their POV, as you're basically saying "You own the rights to what you generate. Do as you like with them." To act against someone for doing so is pretty much a 'rug pull'.

You may not like that they are selling the maps, but you literally gave them the right to do it.

I doubt there was any malicious intent on their part. For one thing you didn't have that license on your neighborhood generator for a long while, and in that time that seller never made a neighborhood map book. You only just recently added it, but since you did I'm sure a book will pop up eventually. On top of that, they actually mention it in the details that it is generated, which they are not actually even obligated to do.

 It is perfectly reasonable for them, or anyone, to believe that you were either ok with how they're being used or just did not care. I'm not a lawyer, I don't know about the legality of changing it after all this time, but even if you did I don't think it would be fair to whoever that seller is or anyone else that acted before some change was made to it.


I came here for the same reason, I found that many of the product sold by Silent Wave Press are just prints from your generators. I wanted to find someway to contact you. But it looks like you’ve already been notified. Very uncool that they are profiting off of assets you created.


Hey there watabou, I absolutely love the generator, and have been looking around. It doesn't look like the generator itself is open source, however is there any (preferably free) licensing available? The why: We run a volunteer camp for kids in the area, and one of the main things the kids like doing the most (and let's face us, us adults as well) is playing tabletop games like Dungeons and Dragons. We just got donated a license to FoundryVTT which has an amazing importer for this tool, but our issue is while we have tools and everything for kids to play on the campsite, the site itself has no signal or internet available, so unless we pre-generate a multitude of dungeons in advance we won't be able to get any new ones for the kids to play with once we're actually out there. 

So if there's any way at all possible to run a local copy of the generator at our campsite to be able to make on-demand content to use that would be so amazingly useful. Thanks for such an amazing and free tool, and I hope to hear from you whether the news is good or bad. :)

I'm not sure the easiest way to contact outside here, but I have Discord and normal contact options as well like email etc. Thanks again!


Hi! I have a Patreon which I use mostly as a blog (with most posts being public). The only real "reward" for my patrons there is that occasionally I build and make available native versions of my generators including 1PDG. So if you want you can become a patron to access those native (win, macos) applications.

Alternatively, you can try to download all the files of the generator from to run it locally. It is definitely possible, but I can't provide any instructions - that's not my area of expertise.



Hello good afternoon! Very good work, I wanted to know if there is any way to talk privately with you, and if you make paid changes

Hi! Unfortunately, it looks like there is no way to pay me anything at this moment.If you think the changes you need could be useful not only for you, you can try to pitch your idea here :)


Brilliant work. Is it possible to select exactly which tags to include/exclude? If there are hotkeys for this, I can't find them.


Thank you. Click tags to select/unselect them and press Generate to build a dungeon with selected tags. The resulting dungeon may include other tags and some of selected tags may be missing, but overall it's pretty close to what you are asking about. There is no way to request a dungeon without a specific tag, but I'm planning to add a number of "opposite" tags to achieve the same effect (e.g. "single level" for existing "multi level"). 


where did the options go? it says to use the context menu to access them but i don't remember doing that before and also i dont know where the context menu is...

Right-click anywhere on the generator to access the context menu.


Would it be possible to exclude specific tags from the generator? Like multi-level, for example, really throws off an otherwise good dungeon.

I can try implementing the "single-level" tag for this particular case.


That would be super helpful. Thanks and keep up the awesome work. Seriously, your generators bring me so much joy.


Also, a generic "skull" icons on some rooms to indicate where random monsters encounters could occur would be nice?


I could suggest rooms for random encounters but they would be just random locations and this doesn't sound very helpful, does it?


Would be possible to add a "cave" style, to create caves in addition to dungeons?

I thought about making a separate cave generator (, because caves are too different from regular dungeons.


Can I export to TSV format? 



I'd love to have a "Number all rooms" option since I'll probably want to generate some details for all of the rooms myself. And an option for exporting the notes to a .txt (or .rtf) file would be sweet too. :-)


You can number all rooms by checking Notes mode > Numbers.


What an awesome one page dungeon generator! The maps look better than a lot of maps in published books!


I love your tool, it's so helpful and easy to use, it really saves time!

Would it be possible to add the option to generate caves, and not only man made dungeons? That would really make it next level.

Thanks for all the great tools you provide!


Wow. So cool and fun. Thank you.


Hi, how do i align it to grid on roll20? Always one room is aligned perfectly, but others parts of the dungeon are not aligned.

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Why this happens in roll20 is a mystery for me, obviously all the cells on a dungeon map are of the same size. Anyway, you need to use "Export as PNG..." instead of "Save as PNG". In most cases this allows to avoid that problem.


Thanks, i used the option Export as PNG and it worked!


really nice


Hi, did you know there's a publisher on Amazon selling books of maps made using your software?

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Oh wow, there are a whole series of them! I didn't know about these books, but I've seen others before (also a Kickstarter campaign for similar stuff). Formally, it's OK because "you can use images created by the generator as you like…", but I hope these guys earn less they they spend on this enterprise.

What I find weird is that on my phone, I can generate dungeons via the Run Generator button. Here on my desktop, no button exists, so I have to hit refresh each time I want something new. On my phone, it also provides more detail about the dungeon.

It also says to "Use the context menu to access all the options of the generator." but there is no context menu...

I have a context menu under right click…

Strange. I get absolutely nothing when I right click.

What browser? The screenshot was done on Chrome on Mac but it works all the same on Windows 7.

Do hot keys (e.g. Enter) work for you? Could you check your browser console for any messages there?

Also, what does "provides more detail" mean? What is missing on your desktop comparing to the phone?


It's really weird. It's working now. I haven't done anything differently, but I can now right-click and get the menu. That's good because on my phone I can't read the various notes for the rooms, as they all pile on top of each other and the dungeon description, leaving only the top note visible.


My first map for an old chaotic evil temple turned into a Trog lair.


This is pretty awesome.


Hey Watabou, I'm really impressed with your generation algorithm. I already saw a 2-year-old post on Reddit where you talk a little about it.

 I'm very interested in some more insight about the algorithm, like the steps that it takes, if you use existing 'premade' rooms, and maybe if you use variables to determine what kind of map to generate (some look really different). 

Anyway, keep up the amazing work, I'm a fan :)


1.What do the different doors mean? There are normal doors, doors with a long line in them touching the short sides, doors with a short line touching the long sides, and doors with double lines. 

2.Also, NWES changes, it appears. When it says there is a door with keyholes in it to the north, sometimes it will be up. But sometimes west will up. Does it change?

3.What are those bars that look like stairs? Are they stairs or not?

4.What is the star meant for? Is it the beginning or the end or something else completely?

5.Where do you "start" in a dungeon? Stairs? The star? A certain direction? Anywhere?

6.Finally, do the numbers also mean an order? Like, there are those 'stair' shapes in room one, does it mean you'd start in room one, and traverse in numerical order? or not?

Sorry there's a lot of questions.

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1, 3, 4 - Those are pretty standard dungeon symbols:

2 - If you uncheck Rotate-to-fit, north will always be up.

5, 6 - It's not an adventure, it's just a map. You can start wherever it makes sense to you. Like on most maps numbers mean nothing here, I could replace them with letters. Choose Notes mode > Tailed if they bother you.


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.

Is there a way to obtain the JSON using a HTTP request? I've written a tool to convert these into isometric and would love to be able to do it all in one click rather than having to manually save it.


We'd love this too :-)

Nope. Something somewhat similar used to be implemented in MFCG. Adding a specific URL parameter made a generator to save a generated map right after loading. It is not hard to implement here but I guess this is not what would help you?


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.

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