Sure! Here's an example of a generative art game written in a single HTML file, using JavaScript and enclosed in script tags. This game allows you to create unique abstract artworks by simply tapping or swiping on your smartphone screen.
By running this HTML file in a browser on your smartphone, you will see a canvas where you can tap or swipe to draw colorful lines. Each stroke will have a randomized color, creating unique generative art as you interact with the screen. Enjoy exploring the possibilities of this simple generative art game!