Sure, here's an example of a generative art game implemented as a single HTML file using JavaScript:
In this example, a canvas element is used to display the generative art. The `generateArt` function is responsible for clearing the canvas and generating random shapes with random colors. The game starts by calling `generateArt` immediately.
You can modify and enhance this code based on your requirements, such as adding interactivity or using pictograms instead of random shapes.