Sure! Here's an example of a simple generative art game implemented as a single HTML file using JavaScript:
This game will generate random colored rectangles on the canvas whenever the user touches the screen. Each touch will regenerate the art, creating a new composition of rectangles.
Note that the code snippet above assumes that the smartphone will be used for touch input. If you prefer to use mouse input on a computer, you can replace `'mousedown'` with `'mousedown'` to trigger art generation on mouse click instead.
Feel free to modify and enhance the generative art game according to your preferences and design ideas!