Sure! Here's a simple game called "Pixel Market" implemented as a single HTML file, using JavaScript and enclosed in script tags:
To play the game, open the HTML file in a web browser on your smartphone. When you run this game, it will create random color pixels every 2 seconds. You can sell pixels in the market by calling the `sellPixel` function with a specific color (e.g., `sellPixel("red")`). The price of each color pixel will depend on the number of pixels of that color present. The market will be displayed in a square canvas, with each color and its respective price listed.