Sure! Here's an example of a simple billiards game implemented as a single HTML file using JavaScript:
This example sets up a simple billiards game where a ball moves around the canvas. The canvas represents the billiards table and the ball is represented by a blue circle. The ball bounces off the walls of the canvas and when it hits the bottom wall, the game ends and a "Game Over" message is displayed.
To play the game, you can simply copy and paste the above code into a new HTML file and open it in a web browser, preferably on a smartphone for easier touch operation. You can customize the game further by adding additional features like pockets, multiple balls, or aiming mechanisms using pictograms or additional JavaScript code.