Biblyon the Great

This zine is dedicated to articles about the fantasy role-playing game Gods & Monsters, and other random musings.

Gods & Monsters Fantasy Role-Playing

Beyond here lie dragons

Island Book 1 and old-school tables

Jerry Stratton, April 26, 2023

Sheryl England’s Sinbad vs. Conan: Back cover illustration by Sheryl England for the Judges Guild Island Book 1.; Judges Guild; Inspirational fantasy art; Sheryl England

Sheryl England’s cover art is also a draw.

I managed to acquire a copy of Judges Guild’s Islands Book 1 a few weeks ago. Like most Judges Guild books, it is very interesting and very strange, and very much a product of the old school enthusiasm that permeated its era. It was published in 1978, which is still pretty early. As late as 1976, Judges Guild was still selling books from the trunk of Bill Owen’s Mustang.

It’s titled “Island Book 1”, but I can find no evidence of an “Island Book 2”. It’s a lot like their three Treasure Maps books, two Castle Book books, and Temple Book1. It’s a collection of island maps, with no keys. Some features are marked, but for the most part you’re expected to either draw your own features and keys directly on the maps, or photocopy them and draw on the copy.

You could, presumably, also use some of the included tables to generate items to correspond to the features marked on some of the maps.

They’re all filled with hexes, numbered for your amusement, part of the Judges Guild “Campaign Hexagon System”.

The cover artwork is by Sheryl England, great evocations of island-hopping adventure. The back cover is basically Sinbad vs. Conan, a great choice for sailing fantasy.

But the real draw for me is the utterly gonzo three pages of island generation tables. As soon as I saw them, I knew I wanted to make a script to generate islands.

The tables are interwoven; some results seem to indicate further rolls on other tables. This is conjecture, however: how the tables interweave is never mentioned. There are no instructions for using them. Not only are there no instructions for how to use subtables, there are barely instructions for how to use individual tables.

For example, the main table, for type of island, has a numeric range after some of the islands, such as 1-3 or 2-12. They have to be die rolls, because they correspond to the most common ranges for die rolls. But die rolls for what? For the number of islands in the chain, or for number of features that follow?

Every such entry has a list of features, such as volcanoes, mountains, hills, traps, what kinds of provisions can be scrounged on the island, and so on. I’m assuming that they are possible features, and that an entry such as “Sandy Isle (1-6) MHCT” means that this is a sandy island (that much I’m pretty sure about) that contains d6 features; those features include mountains, hills, creatures, and traps.

Other interpretations are easily imagined.

As I imagine they work, the tables end up creating something like this:

Paradisal Island

The island is 6,000 feet wide. It has a general elevation of 1,882 feet. It receives 50 inches of precipitation per year. It has a growing season of 243 days. Temperatures on the island range from 61 to 80° F. It is recognizable by a unique cliff. The weather is currently oily drizzle.

  • The island is approachable through a barrier reef.
  • Noise: splashing.
  • Outcome of shore party: find castaway; if none on island, find provisions, unless also not available.
  • If an encounter is needed near the coast, consider 65 giant sea snakes.
  • The island is mountainous.
  • The island is hilly.
  • Three Available Provisions
    1. salt spray.
    2. salt potholes.
    3. hot spring (potable water).
  • Multiply average precipitation by three if within 150 miles of equator.
  • Reduce temperatures by 10° for every 200 miles north of the equator, and by 5° for every 1,500 feet above sea level; in the winter subtract 30%, in the spring subtract 20%, in the summer add 10%, and in the fall subtract 25%.

“Paradisal Island” is not the name of the island, but the kind of island. It’s an island paradise. That’s not, obviously, a technical term like some of the other entries on the table. It’s a guide to the Dungeon Master on how to portray the island. And while it’s not programmed into the script (or the tables from the book), the random rolls that follow did indeed create a paradise. Temperatures range from 61° to 80°. There’s a barrier reef that protects it from storms, making it a great place to dock. There are mountains and hills and even a hot spring that’s not poisonous. On the down side, it’s also rainy and the barrier reef is potentially infested with giant sea snakes.

Here’s another example:

Atoll Ring Reef

The island is 9,100 feet wide. It has a general elevation of 652 feet. It receives fourteen inches of precipitation per year. It has a growing season of 285 days. Temperatures on the island range from 81 to 100° F. It is recognizable by a unique cave entrance. The weather is currently torrent.

  • The island is approachable through light winds.
  • Noise: wailing.
  • Outcome of shore party: find recluse; if none on island, find provisions, unless also not available.
  • If an encounter is needed near the coast, consider one giant squid.
  • Dominant creature: paleocincus.
  • Multiply average precipitation by three if within 150 miles of equator.
  • Reduce temperatures by 10° for every 200 miles north of the equator, and by 5° for every 1,500 feet above sea level; in the winter subtract 30%, in the spring subtract 20%, in the summer add 10%, and in the fall subtract 25%.

This much-less paradisal island greets the players wailing. It’s always hot. And the dominant creature is an obscure dinosaur… well, no island is all bad.

Some of the results are further extended with other tables, and some aren’t. There is, for example, a table of “Mysterious Finds”, and a 20% chance per day of finding something on it while marooned. If a passing ship is rolled, there’s a table for passing ships. There’s a table for recluses, and for castaways. If skeletons are rolled, there isn’t a subtable. Nor is there one for leather thongs and kegs. And I wouldn’t expect one.

The superficial reason is that it is entirely up to the Dungeon Master what skeletons, leather thongs, or broken kegs represent. You could use one of the people-oriented tables to see where the thongs and kegs came from—I chose not to do that with the script—or you could just pull something out of the air, or out of the party’s past adventures, or out of the rest of what’s on the island. Saying that some things were left up to the Dungeon Master to make up is missing the point of this sort of free-wheeling collection of tables. Everything was left for the Dungeon Master to make up, whether it had a subtable or not.

Island Book sample map: A sample map from Judges Guild’s Island Book 1.; Judges Guild; maps; islands

The maps are meant for quickly pulling out when you already know what needs to be on the island, you just need an outline to put it on.

I’m also guessing that the DM is expected to replace finds with other finds once they’ve come up too often. Or dominant creatures, because as it stands the dominant creature on 1 in 20 islands is the giant toad and on another 1 in 20 islands, the paleocincus.


Nowadays, you would expect to see an explicit “roll on Castaway table” instruction if the “Mysterious Finds starving castaway” is meant to be rolled just as the “Isle Inhabitants castaway” is. I wouldn’t be at all surprised if the “castaway” table in this book is meant specifically for the isle inhabitants—they’re both in the same row—and not for the mysteries.

I also wouldn’t be surprised if the authors would be completely surprised at the suggestion of an explicit instruction for any of those guesses. These are tools. They are to be used where they help, and not where they don’t. What that means will change from DM to DM, from game to game, and from session to session.

More incomprehensible text shows in the available provisions table, and even where the text is technically easily understood, context is missing. For example, many of the provisions are sources of water, such as a hot spring or a warm spring or a caldera lake. Each is followed by a parenthetical “80% Prob” or “100% Prob”. I assume that “Prob” is short for “probable” or “probability”, but probability of what?

Beneath that table is another table for kinds of non-potable water, so on first glance it looks like a probability that the water is non-potable. This would mean that limestone springs are always non-potable, however, which is a strange result. So, perhaps, it’s the chance that the water is drinkable? That’s what I ended up going with.

Similarly, the Coastal Encounters table provides interesting coastal encounters—but no other table references it. So I had the script provide a coastal encounter as “if a coastal encounter is needed, consider…”.

I’ll have more about how I wrote this script and what it does in the next installment, but for now let me say that it is far from an example of well-written, organized code. It’s as messy as the old-school tables it encapsulates. Judges Guild products ran along a wide range of quality, even within individual books. Most companies back in the day were gamers first, publishers second. Editing and proofing took time away from gaming.

Playtesting was nonstop—but getting the results of playtesting on paper was a task that often assumed knowledge on the part of the reader that only the writer could possibly have. In other cases, playtesting only revealed “well, that’s what we did”, something not worth writing down because everyone does it differently.

The boundaries between publisher and player were indistinct.

In many ways, third-party gaming books from this era are a lot like the older cookbooks I also collect. Even for the time, they leave a lot out that the writer assumed everyone knew. They also leave out a lot that the writer didn’t even know they left out. It was such common knowledge it wasn’t recognized as knowledge.

These cookbooks and these game books assume a culture that has since changed considerably, to the point where much of what was used then requires re-entering that culture; they are impenetrable otherwise.

And much of the culture can’t be re-entered, because it’s lost.

Much of what I’ve semi-complained about here, such as the orphaned “coastal encounters” table, probably wasn’t a bug. The authors likely assumed, the Dungeon Master is rolling d6 every sea turn, and when a one comes up, they need a sea encounter table. And that everyone knows this.

The same with the superficially common weird encounters. One in 20 islands does not contain a “dubious genus of ankylosaur”. The DM is expected to alter these tables over time. They’re expected to change them on the fly to whatever their own favorite dinosaur is today.

This is very different from later tables, even from Judges Guild. In the same purchase, I also got the 1982 Wondrous Weapons. Four years makes a big difference. There’s a very similar, in purpose, set of tables for creating unique weapons. Each table is numbered, so you know where to start; it is filled with references to “see Sub Table xx”. Those tables would be far easier to program, which of course makes them less interesting.2

Island Book 1 appears to be available as a reprint from Judges Guild; it looks like they have a handful of the other themed map books reprinted also. I’ve not ordered any of them, however, so I have no idea how well their store works or if it’s still in operation.

Next up: how I wrote the islands script.

  1. Which is also titled with a one and does not appear to have a two. “Caves and Caverns” and “Ruins” were the same basic idea, but were unnumbered. Consistency is the hobgoblin of gamers who have too much free time because they don’t play often enough.

  2. They’re still fascinating, however. Where else are you going to find a lariat made of orichalcum that slices through warm metal, thus ignoring armor?

  1. <- The Saurian