RPG Companion App – TTRPG Systems

Introduction

The RPG Companion App is built so that anybody (really, anybody) can create TTRPG systems that are compatible with the app. This documentation aims to give you the tool to help you be able to design a system that can run in the app, host it and share it so that your players (and the rest of the world) can enjoy the system you created!

What is a system?

Throughout this documentation, the word system will be used to refer to an *.rpg.json file that can be interpreted by the app as a valid TTRPG system that it can run and work with.

Is it hard to create a system for the app?

Not at all! You can make systems as simple or complicated as you want. Just give it a try, and feel free to contact Vlad (the app developer) if you need any help or run into issues. He's always happy to help. You can reach him at feedback@blastervla.com.

What if I don't want to create a system, but host resources for an existing system instead?

This is a perfectly valid use case! You will still need to host a system, because this is a requirement. But, because the system you want to extend already exists, all you need to do is host a copy of that preexisting system, and you can add your resources under it. As long as the system you are hosting has the same id as the original one, these resources will be added to that system in the app! Just make sure not to play with the system version. You should keep the system file exactly how you downloaded it. In order to see how to host resources, take a peek at the Creating a system page.

What's next?

Now that you know what you're working with... Head to Creating a system to get started.