Wednesday, July 30, 2014

Slime Molds

This is an idea that is very visual, so I've included a bunch of pictures.


D&D has long thrived on the ideas of slimes, molds, oozes and jellies. After listing monsters taken mainly from fantasy fiction, folklore and myth, OD&D finished off with the "clean-up crew," the famous infinitely dividing black pudding, deadly green slime, spore-bearing yellow mold, and the big amoeboid horrors like ochre jelly and gray ooze.


Slime molds are a great template for creating your own variations on the clean-up crew. They're an excellent fit for dungeons because their natural habitat is anywhere that is dark and moist, preferably with excess organic matter (like dung or carrion) for them to grow on. They share a life cycle where a fluid mass consumes what it needs before turning into a fruiting body, which then lets off spores that will start the process again. You usually don't see it until it gets into this later stage. Some of them almost form a slug-like body while moving toward better locations for feeding.


The varieties of these life forms are pretty impressive. They were often confused with fungi, which some of them superficially resemble, but they are not such. Visually the slime molds are often quite colorful; several of the most common such molds are obnoxiously yellow in color, but some are actually iridescent. Their bodies sometimes resemble vomit, or other times are distinct fungoid objects. It can be totally unsuspected, and easily confused for something harmless - or harmful - depending upon the referee's wish.


Slime molds are great because they can have all of the qualities of your classic clean-up crew; poison, acid, paralysis, and other similar nasty effects can all readily result from contact. Depending on the coloration they can be a nasty surprise when PCs step on them. But they have one characteristic that makes them endlessly fascinating: they're not readily killed. Slime molds often come out in moist weather, and go away when it dries up, but there is no real "thing" to kill. Hacking them apart will, at best, get spores on you.


There is something weirdly inhuman, almost Lovecraftian, about the way that slime molds spread ooze-like from place to place and are totally immune to most of the things that PCs would use to destroy monsters. The potential for molds to lay spores that sit dormant, whether in a backpack or article of clothing or similar place, that will grow back and return relentlessly. There are shades of "The Colour Out of Space" if the spores spread and are seen by a farmer who thinks they're nothing more offensive than dog vomit ...

9 comments:

  1. There is something weirdly inhuman, almost Lovecraftian, about the way that slime molds spread ooze-like from place to place and are totally immune to most of the things that PCs would use to destroy monsters.
    You hit it.
    Back in the days , when Tolkien and Arthurian romances where the only exposure I had with Fantasy, I tended to disregard the molds & oozes as rather "out of tone" monsters that I would feel ashamed to use as a DM (not to say anything about the gelatinous cube!).
    But after reading Lovecraft and the description of a Shoggoth in the tunnel of the Montains of madness, I earned a new respect for these things...

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  2. Here's something: most of them have 1 or 2 HD. The pudding is like 10 HD. The Cube is like 4-6. I don't have it in front of me.

    My take: there ought to be monsters of this type which are at each hit dice base from 1-10. There's your challenge, go play

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  3. I made a set of tables to randomly generate slimes molds and jellies. They are great for the reasons you describe, and I like the idea of looking at actual slimes and molds for inspiration. Truth is stranger than fiction!
    http://builtbygodslongforgotten.blogspot.com/2011/10/slimes-molds-and-jellies.html?m=1

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    1. It sounds excellent, but unfortunately I'm not able to download the file at that link. I just get a Mediafire error.

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    2. Whoops! Try:
      http://www.mediafire.com/?3ydq4daeq4ygw4o

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    3. I don't have HD on there. I like Scott's idea: roll D10 for HD!

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    4. Nice! Thanks for sharing this.

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  4. "SLIME MOLDS: These creatures are so bizarre that it seems as though they evolved specifically to be used in AD&D games."
    --Kent Colbath in p. 34 of Dragon #111 (July 1986)

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    1. Ha! Great catch, Geoffrey, and it's fun that it was touched upon so long ago. The forms are interesting, if mid-1980s AD&D picky in terms of rules, and I don't think HP model slime molds well.

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