I'm glad you are interested in creating a generative art game! Here is a basic example of how you can implement a simple generative art game using JavaScript in a single HTML file:
This code sets up a canvas element in the HTML file where generative art will be displayed. The `generateArt` function randomly generates colored rectangles on the canvas, and the `playGame` function calls `generateArt` repeatedly to create a constantly changing artwork.
Feel free to modify and expand on this code to create your own unique generative art game!