Sure! Here's an example of a simple billiards game implemented in a single HTML file:
This implementation creates a canvas element where a billiard ball moves around. The `draw` function is responsible for clearing the canvas, drawing the ball, and updating its position. The `gameLoop` function calls the `draw` function repeatedly using `requestAnimationFrame` to create a smooth animation.
Please note that this is a basic example and doesn't include the full gameplay mechanics of a billiards game. But it can serve as a starting point for further development.