Sure! Here's a simple example of a generative art game implemented as a single HTML file using JavaScript and enclosed in script tags:
This game generates random shapes (rectangles) of random sizes and colors on a canvas whenever you touch the canvas on a smartphone. Each touch will draw a new shape at the touch location. The colors are randomly generated using the `getRandomColor()` function. The canvas is set to 400x400 pixels, but you can adjust the size as needed.
Note: This is a simple example and can be expanded upon to create more complex and interactive generative art games.