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Iron Arachne

Procedural Generation Tools for Tabletop Role-playing Games

This website hosts tools intended to make life easier for players of tabletop RPGs. It's a living website, and will continue to receive new tools on a semiregular basis.

My name is Ben Overmyer. I'm the developer behind this site and the tools it presents. I'm happy to take suggestions - either for my existing generators, or for new tools you wish existed. Email me at!

Latest News

About the Data Core and a new database server

June 26, 2020 19:00

Data Core's alpha is online and I'm very pleased with it so far. Once it's ready for use, I'll publish the link here so curious folks can check it out.

As I've been developing it, I've noticed a few things that using it will allow me to change in the World API. For example, it will let me set up a faster search system, as well as a way to set up relationships between tags that's both performant and useful.

A Dedicated Database

The databases for Data Core, Iron Arachne, and the Iron Arachne Blog are all now hosted on a dedicated database server provided by Digital Ocean. That means my monthly cost to run IA has increased by $30, but the speed boost and the ease of management is well worth it.

At some point I might consider setting up paid memberships with additional features to help defray that cost, but for the time being I'm happy to continue paying it myself.

Project Update June 2020

June 10, 2020 12:23

There are several updates in the works for Iron Arachne. The most important one is that I'm writing a new application I'm calling Data Core that will allow me to modify the data used for generation in real time. At the moment, all data used by the world API is stored in JSON files and baked into each release. Data Core will provide a data API that the world API server will reference instead. It will also let me add things like new plants or animals much faster.

After Data Core is launched, I plan on working on new options for the heraldry generator. You will be able to search for charges by tag, and possibly also specify the division of the field and the tinctures used. It should be possible to have more control over what's generated, while still allowing for completely random coats of arms.

Fix released for existing creations going missing

April 20, 2020 17:10

A user from Turkey reported that his creations (specifically, heraldry) were missing. I checked into it, and turns out the last server reset revealed a bug in how I was handling caching.

That bug is now squashed. Heraldry, regions, and cultures that seemed to be missing are now back.

There are still some other bugs that cause errors in region and culture generation. If you see a server error page, that's probably why. Just try again for now.

External Generators

The following is a list of other websites that offer generators like these.