This app can take 18xx game definitions written in json, display them, and render them for printing. The original intent of this site was for personal PnP projects, but the purpose has shifted over time to prototyping new games.
This project was bootstrapped with Create React App. The application version is created using Electron. The ui was made with Material-UI.
We have an #18xx-maker channel in the public 18xx slack.
Please check out the documentation for information about how to use this app to prototype your own 18xx games.
I've been asked about donation buttons; if you find this software useful to you and would like to donate money towards its development you can do so via paypal or square cash.