Sure! Here's a simple example of a generative art game implemented as a single HTML file using JavaScript. The game allows you to create art by clicking and dragging on the screen to draw different shapes. You can play it on a smartphone by opening the HTML file in a web browser.
To play the game, you can open the HTML file in a web browser on your smartphone. Once the file is opened, you'll see a canvas element where you can draw with your finger or stylus. Simply touch and drag on the screen to create different shapes and patterns. The previous coordinates of the touch/mouse movements are stored to create smooth lines.
This implementation uses JavaScript and the HTML5 Canvas API to create the generative art experience. It provides a basic drawing functionality where you can create interesting patterns by moving your finger or mouse on the canvas.