Sure! Here's an example of a simple game implemented as a single HTML file using JavaScript, enclosed in script tags:
This example creates a simple particle game where a blue square moves around the canvas and bounces off the edges. You can customize the game configuration variables at the beginning of the script to change the size, speed, and colors of the particles. To play the game, simply open the HTML file in a web browser (preferably on a smartphone for the best experience) and watch the particle move around.