At the Earth's Core and Pellucidar

It was a huge tiger—such as hunted the great Bos through the jungles primeval when the world was young. In contour and markings it was not unlike the noblest of the Bengals of our own world, but as its dimensions were exaggerated to colossal proportions so too were its colorings exaggerated. Its vivid yellows fairly screamed aloud; its whites were as eider down; its blacks glossy as the finest anthracite coal, and its coat long and shaggy as a mountain goat. That it is a beautiful animal there is no gainsaying, but if its size and colors are magnified here within Pellucidar, so is the ferocity of its disposition. It is not the occasional member of its species that is a man hunter—all are man hunters; but they do not confine their foraging to man alone, for there is no flesh or fish within Pellucidar that they will not eat with relish in the constant efforts which they make to furnish their huge carcasses with sufficient sustenance to maintain their mighty thews.

- At the Earth's Core

This is another chapter in my Appendix N quest. In a previous one, I heartily recommended another book by the same author (Edgar Rice Burroughs), A Princess of Mars. If you enjoyed that one, you'll likely enjoy this one too.

At the Earth's Core and Pellucidar (the first and second books in the series, respectively) are very close in spirit to A Princess of Mars: the story of a man from Earth who travels to another place (in this case, the Earth's core instead of another planet), discovers savage, weird civilizations, falls in love with a princess, and becomes ruler of the world.

The protagonist, David Innes, is maybe just a tad less superheroic and self-confident than John Carter, and has a bit more humor. Maybe the writing in these books is even a bit superior to the Barsoom series; the pace feels somewhat faster. Another advantage is that these two books form a coherent whole, with a satisfying ending (which I didn’t quite get in the case of Barsoom). There are other books in the series, but they were written a take place many years after the end of Pellucidar (even Tarzan will visit Pellucidar in book 4!).

But the pulp action and naïveté are still there, sometimes amplified. When Innes is chained to a random group of people, there’s a princess behind him and a king of another tribe ahead of him. The princess gets kidnapped several times, and the hero is imprisoned often. "Random encounters" often with important characters and fell unlikely to have happened by chance. The protagonists rules over others for no apparent reasons and staunchly believes he can create utopia with enough guns, factories and banning commerce.

Personally, I find Barsoom—with its weird aliens and monsters—a bit more interesting than Pellucidar with its dinosaurs, cave people and Smilodons (which probably influenced the appearance of such creatures in D&D and AD&D, and the how Hollow World setting from Mystara). Curiously, John Eric Holmes wrote a couple of sequels authorized by the Burroughs estate.

Still, Pellucidar has its cool features such as areas of permanent light and permanent shadow and mind-controlling pterodactyl-people (the scene where they hypnotize their meal is particularly creepy and cool).

In any case, both books are enjoyable reads and will probably influence my current project.

Read more about the Appendix N and other fantasy books HERE.

Prismatic Worms (Prismatic Planet)

Did you ever notice how purple worms are listed under “P” in the D&D monster manuals, but red dragons are under “D”? Not sure where I’ll file my entries.

Purple worms are such a cool creature, I decided to add some variations. If purple is the biggest, red could be the smallest—maybe with a touch of Paranoia-style inspiration. The rest basically wrote itself.

I like the idea of monsters with common origins. Not just “it’s magic,” but something with vaguely scientific explanations, which fits the sci-fi setting. You can put aboleths, snakes, rot grubs and all kinds of creatures as mutated worms.

And the best part is... they create dungeons as they burrow!

The Great Grey Worm concept is an old one—I might’ve borrowed it from Dune, Lovecraft’s dholes/bholes, Bahamuth, etc. It is also discussed in my Teratogenicon.

For more ideas on worm cults, check Obscene Serpent Religion.

Anyway, here are the prismatic worms!

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The prismatic worms are strange annelid creatures that can reach enormous sizes, changing colors and shapes as they grow. The smallest ones, rarely seen, resemble large earthworms and are almost featureless. They might be obsidian, white, or grey soon after hatching, but they are rarely—if ever—observed in such colors. Typically, the smallest are blood red, the most common are orange or yellow and about the size of snakes, and the largest grow to green, blue, and eventually purple—reaching nearly 100 feet in length and six feet in diameter.

They lay eggs beneath the earth and sand, where they can hatch and wait for an unsuspecting victim. Sometimes, a previous victim or carcass serves as a host. People attacked by mature worms may find themselves infected with their eggs, which hatch and produce larvae that consume the victim from within after a few days of hallucinatory fever. One such also be careful to avoid eating the meat of infected animals.

The worms are highly susceptible to mutation. Some individuals develop wings, small arms, or amphibious traits. Others are blind or covered in innumerable eyes. There are scorpion-like, eel-like, and bat-like variants, but the biggest specimens seem to lose these features as they grow. All of them share a round mouth with sharp teeth and typically a poisonous stinger. They suck blood and burrow into living or dead creatures while young, but once large enough, they devour their victims whole and regurgitate unused materials.

Most prismatic worms live underground or underwater. There are burrowing versions that prefer deserts or any kind of softer soil, although some seem powerful enough to leave stable tunnels beneath the earth and even through solid rock.

Their bodies are harvested as ingredients. Each color yields a different rare substance. Eating them may cause sickness, mutation, or death. The venom is deadly but also has calming and hallucinogenic properties.

An alternative theory about the existence of the worms suggests that each type belongs to a distinct species, possibly sharing a common ancestor. Intermediary forms—with underdeveloped wings or multiple colors—are rarely seen, which could indicate that they are separate creatures.

Many cults worship prismatic worms. Some sacrifice people to the great worms, while others seek to mutate themselves or others in pursuit of creating superior races. One heinous ritual involves human sacrifice—willing or not—alongside either a cluster of eggs or a single mature worm, roughly the size of a person’s throat.

Legends tell of a great grey worm living far underground (or deep in the oceans, or frozen in some glacial nation) that one day might eat the core of the planet until it collapses unto itself. While few claim to have seen such an aberration, some tunnels are greater than any worm in known memory.

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Back to the table of contents.

As always, all feedback is appreciated!

Prismatic Planet - Table of Contents

This is a Table of Contents for the Prismatic Planet setting. It’s unfinished—just a rough draft based on what I have in mind so far. I’ll update it as we go.

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Intro

1. Short intro and explanation
2. Introduction to the Setting 

Creatures

1. Humanoids
2. Insect people
3. Beasts (incl. dinosaurs)
4. Robots
5. Prismatic Worms
6. Oozes
7. The Progenitors
8. Great Ones

Places

1. The City of Evil (draft)
2. The Black Hexagon

Religion

Mythology

Tech & Treasure

Sources of Inspiration 

Random tables (draft 1)

Prismatic Planet

Okay, I'm giving this a try. 

I've wanted to write this setting for a long time, and now I've finally found a name I really like.

I'd prefer to have a full product to offer you, but instead I'll start a series of posts under the Prismatic Planet tag. Maybe one day I'll compile the whole thing and publish it. 

For now, I hope you enjoy these posts!

This is a sword and planet setting, inspired by my love of Edgar Rice Burroughs’ Barsoom and its spiritual successors like Dark Sun and Carcosa. It also draws from Lovecraft, H.G. Wells, other pulp and weird fiction, traditional D&D, and various other works.

The planet itself is roughly the size of Mars and inhabited by savage humans of different colors—chalk white, obsidian, red, blue, green, and yellow, at least for now. Water scarce but there are a few huge lakes, forests and frozen regions.

The world is populated with strange creatures, including dinosaurs, banths, morlocks, and nightgaunts, and a few ideas discussed in my Teratogenicon. 

There is no centralized government or kingdoms, only a few large cities that rule over nearby villages. While there are no lizard or snake people for now, a few insect colonies do exist. Religion is present but remains materialistic, with no active demons or deities introduced yet.

Psionics are common across all creatures. Advanced technology exists, but few understand or know how to use it. The beings who created it—the progenitors—might be Rykors, Mahars, brains in vats, or something else entirely. They won’t appear soon.

I do not have an specific system for that, but if one is needed I'll certainly use some flavor of OSR. But hopefully it can be used across several systems.

Leave any questions in the comments and I'll answer them to the best of my ability!

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Back to the table of contents.

Random stopwatch encounters

This is a small improvement over an old idea.

The DM rolls 1d100 in secret. Then sets a stopwatch for that many minutes.

When the time is over—there IS an encounter.

This will keep players on their toes! And it has several advantages over checking for encounters every 30 or 60 minutes:

- No more useless rolls where nothing happens.
- Encounters can happen almost simultaneously—roll a 1 or 2, and one side might get reinforcements during the fight!
- Or the newcomers might wait to see who wins… and jump in after.

It would work well for dungeon exploration. On average, you get an encounter every 50 minutes of actual play, on average. Sounds good to me, but you can adjust to your liking.

For wilderness exploration, I'm not sure - maybe you could roll 1d100 and count hours, but that would defeat the purpose of using a stopwatch...

On a similar topic...

In Pellucidar, Chapter 2, Edgar Rice Burroughs describes a series of random encounters—but most are hand-waved until a meaningful one (with a cave bear) actually happens.

Maybe D&D deserves a mechanic like that to make wilderness encounters more meaningful. Day one you circumvent some snakes, day 3, you scare wolves with arrows, day 5 you see pterodactyls in the distance, and day 7... BAM! Roll initiative.

But this deserves further reflection. 

For now, you can check my small app (explanation here) and my latest book to make your wilderness encounters easier to generate.

Reading Elric

Michael Moorcock’s Elric of Melniboné is immensely influential. It not only inspired Dungeons & Dragons—especially its intelligent and cursed swords—but also left its mark on numerous books (The Witcher, the Targaryens in Game of Thrones), comic books (Berserk, and probably many of the "multiverses" form Marvel etc.), and even music (Hawkwind, Blue Öyster Cult, both of which collaborated with Moorcock himself).

In short, Elric is one of the pillars of dark fantasy.

But people often ask how to start reading it. The series can be confusing, since there are so many books and the publication order doesn’t follow the internal chronology at all. The books have been republished rewritten, collected under different names, and so on.

Another complicating factor is Stormbringer—the book that (sort of) concludes the saga. It’s one of the greatest entries in the series (probably my favorite), one of the two Elric works mentioned in the Appendix N, and ironically, one of the earliest to be published.

I’m a big fan of Elric, and part of me wants to just say: Read the whole thing in internal chronological order! But I think it’s easier more helpful to offer a few different starting points.

So, how do we begin with Elric?

Start with Elric of Melniboné (1972).

It’s not the strongest novel in the collection, but it’s a solid introduction to the character, his world, and the themes that define the saga

If you like it, you can go on and read The Fortress of the Pearl, The Sailor on the Seas of Fate, and The Weird of the White Wolf, before going to Stormbringer. 

All of them are great.

But I'd say is even easier to just pick any collection of your choice, as long as it contains the first and the last.

For example (from Wikipedia):

In 1977, DAW Books republished Elric's saga in six books that collected the tales according to their internal chronology:

Elric of Melniboné (Hutchinson, 1972, cut vt [variant title] The Dreaming City Lancer, 1972 US; DAW, 1977) ISBN 0-425-08843-X

The Sailor on the Seas of Fate (Quartet, 1976; DAW 1977), ISBN 0-441-74863-5

The Weird of the White Wolf (collection, DAW, 1977, contains "The Dream of Earl Aubec", "The Dreaming City", "While the Gods Laugh" and "The Singing Citadel"), ISBN 0-441-88805-4

The Sleeping Sorceress (NEL, 1971; Lancer, 1972 as The Vanishing Tower; DAW 1977), ISBN 0-441-86039-7

The Bane of the Black Sword (DAW, 1977, fixup of "The Stealer of Souls", "Kings in Darkness", "The Flame Bringers" and "To Rescue Tanelorn"), ISBN 0-441-04885-4

Stormbringer (cut, Herbert Jenkins, 1965; restored and revised, DAW, 1977, Berkeley, 1984, fixup of "Dead God's Homecoming", "Black Sword's Brothers", "Sad Giant's Shield" and "Doomed Lord's Passing"), ISBN 0-425-06559-6

Now, if you dislike it... we have a few options.

You could go from Elric to directly Stormbringer to see what all the fuzz is about. If you like the story but dislike the prose, there is another great alternative: reading the comics.

Elric's comics and graphic novels

Elric has been adapted several times into comic book format. My favorites are the ones adapted by  Roy Thomas and illustrated by P. Craig Russell and others—and once again, Stormbringer (by P. Craig Russell) stands out as the best of the bunch, but I'd recommend reading the The Michael Moorcock Library first (Elric volumes 1-5: - Elric of Melniboné, The Sailor on the Seas of Fate, The Dreaming City, The Weird of the White Wolf, The Vanishing Tower).

There is also a French version by Julien Blondel in the works, with a few volumes already published. The art (Didier Poli et al) is both dark and really stunning. But the story is much less faithful to the originals, which I'd favor on a first read.

There are other comics that are also worth checking out (The Making of a Sorcerer, Druillet's version, Moorcock's Multiverse, etc.), but I'd start with the "main books" mentioned above.

Additional reading:

https://methodsetmadness.blogspot.com/2025/07/odysseus-elric-epic-musical-and-tragedy.html

https://methodsetmadness.blogspot.com/2024/01/the-appendix-n-project.html

https://methodsetmadness.blogspot.com/2021/03/my-weird-dark-twisted-fantasy.html

https://methodsetmadness.blogspot.com/2023/01/the-broken-sword-one-of-best.html

Reconsidering random encounters (again)

I'm reconsidering D&D random encounters... again.

OSE (B/X) says this about the chances of random encounters:

Clear, grasslands: 1-in-6.

Barren lands, hills, mountains, woods: 2-in-6.

Desert, jungle, swamp: 3-in-6.

The idea that mountains and deserts should have lots of encounters feels both unrealistic and unnecessary. 

Forests probably deserve more frequent encounters, but honestly, we could just equalize encounter rates across all terrains without much loss. You’d still end up with more fights in mountains and forests anyway, simply because travel is slower there. 

Again, from OSE:

Some types of terrain modify the speed at which characters can travel:

Broken lands, desert, forest, hills: 33% slower.

Jungle, mountains, swamp: 50% slower.

Maintained roads: 50% faster.

Plains might have fewer beasts, sure—but they tend to have more humans, so the total number of encounters could stay about the same.

Here is one alternative: 2-in-6 chances for every terrain. If you are in terrain that could fall under two categories (forested mountains, a river in a swamp, a settlement in the desert), a 1 means you roll on the first table, a 2 means you roll on the second table.

What else?

Do we really need different tables for each terrain? It makes some sense, but when I started reading the AD&D tables, I noticed something odd. In alphabetical order, there are no giant ants, badgers, beetles, or beavers listed for mountain terrain. That’s not very precise either. In B/X, there are no undead in forests and no insects in mountains. Is there a reason? This probably deserves some revision.

Rivers are trickier. If you’re in a boat, you’re likely to miss or ignore most fish, and even common alligators or snakes. Most rolls end up feeling wasted. So maybe rivers need their own table too—unless you’re swimming, which isn’t all that common in my experience.

Then there are city encounters, which clearly deserve their own separate treatment - the reasoning is completely different (distance, surprise, reaction, numbers found, etc.). Same goes for the sea. 

In the end, we’re left with intricate encounter tables that don’t always mean much.

Well, anyway, I've been looking for the perfect random encounters and I haven't been able to find them. I fixed some things I disliked in Basic Wilderness Encounters, if you want to check it out. I've also made a small app to quickly check for encounters and weather. But I guess I'll keep looking for ways to improve these procedures.