Sure! Here's an example of a simple game implemented as a single HTML file using JavaScript:
This game is a simple particle simulator. The particles move around the canvas and bounce off the walls. Each particle has a random color and initial velocity.
To play the game, you can open the HTML file in a web browser on your smartphone. You should see particles moving around the canvas, creating a visually appealing effect. However, there is no explicit user interaction implemented in this example. Depending on your requirements, you can modify the game logic to include specific gameplay mechanics or user controls.