Sure! Here's an example of a simple Pong game implemented as a single HTML file. The game is designed to be played on a smartphone and uses pictograms for game elements.
To play the game, open the HTML file in a web browser on your smartphone. You can control the paddle's position by moving your finger up and down on the screen. The objective is to bounce the ball off your paddle and prevent it from hitting the AI paddle. Each successful bounce increases your score. Enjoy!