Sure! Here's an example of a simple game implemented as a single HTML file with JavaScript, enclosed in script tags:
In this game, you control a ball using touch input on a smartphone. The goal is to keep the ball within the boundaries of the canvas while it bounces off the walls. It uses simple shapes and colors to represent the game elements. You can customize and enhance the game as per your requirements. Remember to open this code in a browser to play the game. I hope you enjoy it!