RogerBW's Blog

Random character generation for Cthulhu Eternal 25 June 2026

Cthulhu Eternal has become my preferred Lovecraftian RPG system: free to use (including commercially), the publisher hasn't got into NFTs or AI art, and it's broadly compatible with other Lovecraftian games.

A while ago I abused Typst to write a program which would turn a JSON file defining a character into a playable character sheet. (The official form-fillable sheets are the "special" sort of PDF that Adobe Acrobat now produces unless firmly prevented, and nothing for Linux supports them.) That's the first part of the Shoggoth software suite, to which I later added a program to calculate skill improvements between adventures and a cheat-sheet generator which would produce a summary of the party's stats and skills for the benefit of the game master.

But how do you get the JSON file with the character in it? Well, if you're me, you write it in a text editor as you're going through the character generation process. But most people aren't me.

Now I've added a random character generator, written in Python on the basis that it should be fairly easy for people to work out how to run it on their own machines, and lightly inspired by my GURPS template expander. Given an era and an archetype within that era, it'll generate stats, pick skills, and so on. Some tidying up is needed afterwards (picking skill specialisations and filling in Bonds, for example) but much of the work is done, whether you wanted a quick NPC or something to tweak into a player character.

So far I've converted six of the SRDs to era files, meaning that any of the archetypes in them can be generated automatically: Victorian, World War I, Jazz Age, World War II, Cold War and Modern. I'll gradually reach back in time and do others, unless someone else ends up doing them first.

The code is at codeberg and free to use.

Tags: rpgs typst

See also:
A GURPS Template Expander

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