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I'm trying to create a dungeon or even a semi-plane for my D&D5 game that would actually be fractal-based, like infinite and finite at the same time... Yeah, I quite love these concepts.

I've read a little material on this, but by trying to iterate on simple elements like corridors and rooms, I come with something that is infinitely simple, which is not what I want ...

I'd be really curious to see how the dungeons might look like, what would come out as laws of physics from the way it exists... Would there be some ideas/material to get inspired from, in order to create/generate such things? I'm really curious about the ways to use fractals as the main structure of a plane or a dungeon!

By the way, "it's a good idea because [...]" and "It's a bad idea because [...]" answers are also welcome.

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closed as primarily opinion-based by Purple Monkey, PixelMaster, Sdjz, Jason_c_o, kviiri May 27 '18 at 13:33

Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise. If this question can be reworded to fit the rules in the help center, please edit the question.

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    \$\begingroup\$ I'm not sure I quite understand the goal. Do you want famous fractal inspired dungeon maps or the dungeons to be literal fractals? Do you have any ideas how you want the scaling factor to be fixed? \$\endgroup\$ – David Coffron May 27 '18 at 13:17
  • \$\begingroup\$ I'd like the dungeons to be literal fractals. I don't know yet how the scaling factor should be fixed... Any idea, even very generic is welcome. \$\endgroup\$ – Stephane.P May 27 '18 at 13:26
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    \$\begingroup\$ related: fractal mazes used in d&d; also, feel free to ping me in chat to discuss, as I've used this approach a few times \$\endgroup\$ – nitsua60 May 27 '18 at 17:31
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The key feature of fractals as geography is that they are self-similar at different scales. That means that fractal patterns contain copies of themselves. They are, of course, smaller than the base pattern.

So if you create an enclosed space in the shape of a fractal, you're going to have some corridors or rooms that are much smaller than others. Branching off from them will be even smaller spaces, and so on.

The GM will have to set some kind of limit on how small things can get. If matter in the game world is made out of atoms in a similar way to the real world, that will set a limit, but I have played in D&D game worlds where that wasn't true. There is no intrinsic limit in fractals. They're mathematical concepts that don't worry about matter. The views of fractals that we're used to are generated on computer screens, where the screen resolution provides for a limit.

So if you're going to use fractals as dungeon maps, there will be lots of space that the characters can't readily get into. It may be populated by smaller creatures, but monsters in a dungeon that the characters can't get at have limited entertainment value. So if the campaign is to be more than a one-shot, the characters will need ways to change their own scale. There are at least two ways to approach this:

  • The characters could use magic to make themselves bigger and smaller. They're going to need quite a lot of it, and Dispel Magic would be a powerful attack spell against creatures from a different scale, making them either much smaller, and unable to move quickly, or much larger, and subject to being squashed by the walls around them.

  • A more interesting approach would be to use different levels of scale as the levels of the dungeon. At the entrance, there is just one instance of the map. You push the button, or whatever, to go to the next level, and there are many instances, and so on.

In either case, there's a potential plot arc in finding out why space in this dungeon is so strange.

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  • \$\begingroup\$ I like your second approach very much... Like, making the players start in the "layer 6" where the map is replicated n^6 times, they need to find their way in it, then go all the way up to layer 0 ... That's good! \$\endgroup\$ – Stephane.P May 27 '18 at 13:14
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    \$\begingroup\$ We should be answering questions like this with experience or analysis, not just throwing out ideas. Have you used either of these methods before? Can you provide some more insight as to why these approaches might be better that others? \$\endgroup\$ – David Coffron May 27 '18 at 13:23
  • \$\begingroup\$ @DavidCoffron: Added analysis, showing more about what fractals imply. \$\endgroup\$ – John Dallman May 27 '18 at 14:15

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