This repository contains all of your games as well as a few simple "hello, world!" templates for a game made with Phaser. This repository should be marked as GitHub Pages. This lets you run your games directly from github! Check it out: https://pritster5.github.io/game-prototypes/
You can't run the index.html for a Phaser game directly from your local machine without a local webserver.
If you try, the images won't load (your browser will prevent it, thinking it is malicious).
To get around this with Python, simply enter the directory and type python -m http.server.
Once you have your local server running, browse to it using Chrome: http://localhost:8000/