Sure! Here's an example of a simple pixel art game implemented in a single HTML file using JavaScript and enclosed in script tags:
This code sets up a canvas element where the user can create pixel art. Each pixel is represented by a value in the `grid` array. Clicking on a pixel changes its color cyclically through four predefined colors. The canvas size adjusts based on the screen width, allowing for smartphone operation.
To play the game, simply open the HTML file on a web browser that supports JavaScript (such as Chrome) and start creating pixel art by clicking on the pixels.