Certainly! Here's an example of a simple mobile game implemented as a single HTML file using JavaScript and script tags. This game is a casual game where the goal is to collect as many Z's (representing sleep) as possible while avoiding alarming icons. The game starts once the HTML file is opened in a web browser.
Sleep Paralysis Game
Collect Z's to sleep peacefully!
Please note that the icon URLs in the CSS section should be replaced with actual URLs to your desired Z and alarm icons.
This is a basic example, and you can customize it further to meet your specific requirements or design preferences.