Sure! Here's an example of a simple generative art game implemented in a single HTML file using JavaScript and enclosed in script tags. The game is designed for smartphone operation and uses pictograms.
When you open this HTML file in a browser on your smartphone, it will display a canvas with generative art. The generative art will continuously change colors and positions on the canvas in a loop. Every time the `update` function is called, it will clear the canvas and draw new random shapes with different colors at random positions. The result will be an ever-changing visual experience.