Go to requestly.io and install extension for your browser.

If you don't trust requestly, feel free to install any extension of your choice that does URL rewriting/redirection

Create new rule

Set details

__cache_static__/g/game-min.js
https://www.vgm-quiz.com/dev/webliero/client.js

Above URL is still valid for historical reasons, but actually just a proxy to:
https://gitlab.com/sylvodsds/webliero-extended-scripts/-/raw/main/client.js

You can now reload the webliero page (F5) and join the fun!