Iron Arachne
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 benovermyer.com. Sometimes I'll write about what I'm working on for Iron Arachne over there.
Featured Generators
The following are generators that I'm particularly proud of or are unique to this site.
Recent Changes
Showing the 5 most recent change log entries.
Sep. 14th, 2025
Revamped the visual design of the site.
- Swapped out the old logo for a new one.
- Made all headers use the new logo font.
- Updated the color scheme to be more in line with the new logo.
- Reorganized the navigation so be more intuitive.
Jul. 15th, 2025
Small updates and fixes.
- Added more detail to music styles.
- Added more unit tests to ensure accuracy.
May 28th, 2025
Added a new generator for generating moons.
- Added a system for generating moons orbiting planets.
May 12th, 2025
Completely reworked how astronomical bodies are generated.
- Added a new system for generating astronomical bodies.
- Made the planet, star system, and star nation generators use the new system.
- Added a new system for generating civilizations.
- Made the planet and star nation generators use the new civilization system.
Dec. 2nd, 2024
Behind-the-scenes fixes and updates.
- Reworked the cyberpunk drug generator's structure.
- Updated to Svelte 5.
- Fixed the magic weapon generator not using the new lock seed pattern.