Sure! Here's an example of a simple Snake Game implemented as a single HTML file using JavaScript and enclosed in script tags:
To play the game, you can open the HTML file on your smartphone's web browser. The game board will be displayed along with a green snake and a red food item. Use the arrow keys on your smartphone's keyboard to control the snake's movement. The objective of the game is to eat the food and grow as long as possible without crashing into the wall or the snake's own body.
Note: This is a basic implementation of the Snake Game. You can modify and enhance it further to meet your specific requirements and styling preferences.