Reading a book in a web app

This summer, I wrote the background of Realistis world (in French).

I decided to develop an interactive fiction with added videos, javascript for your challenges to achieve, and cater it as a progressive web app (PWA) to be able to install it and read it offline on any phone or tablet.

Even if you don't read French, you're welcome to test the very first insight into Realistis world: 

It works from Desktop computers, and I encourage you to visit it with your mobile device and install it from your browser.