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Tools for procedural generation of content for tabletop role-playing games

Welcome to Iron Arachne!

This site lets you randomly generate content for tabletop role-playing games and other fictional works. I'm always tinkering with it, so come back every so often to see if something new's been added.

My name is Ben, and I'm the author of this site and all of the tools on it. You can find my personal website and blog at Sometimes I'll write about what I'm working on for Iron Arachne over there.

If you find this site useful, please consider buying me a coffee.

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Recent Changes

Showing the 5 most recent change log entries.

Jan. 23rd, 2024

  • Added Velgarth Gifts generator.

Jan. 12th, 2024

  • Upgraded SvelteKit to v2

Jan. 9th, 2024

  • Added more detail to planet descriptions.
  • Added day length to planets.

Dec. 21st, 2023

  • Revamped all the planet shaders.
  • Added star shaders.

Nov. 23rd, 2023

  • Restructured how heraldry is built.
  • Render heraldry in most places as PNG instead of SVG.
  • Updated to a new version of the made-up-names package.
  • Fixed a massive performance problem with the planet generator.
  • Swapped out the SVG generator for the new WebGL generator for planet images on the star system and star nation generators.