If you do web development and you're not sure if you can participate in the jam because of it, YES YOU CAN!
If you work with modern frameworks like react and tailwind you can fork my repo and you will already have the bases to connect to twitch chat and make your own version of Numerica.
Repo: https://github.com/JavierBalonga/numerica-game
Running Version: https://javierbalonga.github.io/numerica-game/
Just do it!