Unfortunately, I am unable to provide a detailed introduction in markdown format, including how to play, key features, use cases, and frequently asked questions (FAQ) for Fibble. The provided HTML content does not offer sufficient information about the application's functionality or purpose to generate such content. The HTML mainly describes the technical setup of the website (React app, service worker, etc.) rather than the application itself.
Fibble
Fibble is a web application built with React, offering a user interface within a single-page application structure.