Sure! Here's an example of a simple game implemented as a single HTML file using JavaScript:
This HTML file includes a simple game where you control a player object using touch controls on a smartphone. The player is represented as a blue rectangle, and you can move it around by swiping on the screen. The game continuously updates the canvas and the player's position based on the touch events.
Please note that the provided example is a basic game implementation and can be extended and customized further based on your specific requirements and preferences.