Sure! Here's a simple billiards game implemented as a single HTML file using JavaScript:
This game creates a canvas element where the billiard ball is represented as a colored circle. The ball continuously moves around the canvas, bouncing off the walls when it hits them. The game loop runs using the `requestAnimationFrame` function to ensure smooth animation.
To play the game, simply copy the code above and save it as an HTML file. Open the file in a web browser (preferably on a smartphone) to start playing.