Added instructions

[UnknownTiffany]

Description

This PR...

explains how to play the game

Closes: #issue

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Type of Change

• ✨ New feature

Checklist

• [✅ ] Read the Contributing Guidelines.
• [✅ ] Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
• [✅ ] Fill out this template.
• [✅ ] Log your hours.
• [✅ ] Check that commits follow the Angular commit convention, more or less.
• [✅ ] Ideally, include relevant tests that fail without this PR but pass with it (if applicable).

Tested on

• macOS 26