Sure, here's an example of a simple Snake game implemented as a single HTML file using JavaScript:
Snake Snacks
In this game, you control a snake using the arrow keys on your smartphone. The goal is to eat the red food items scattered on the game board. As you eat the food, the snake grows longer. If the snake collides with itself or the game board boundary, the game will end and display a "Game Over" message.
Please note that due to the limitations of this text-based environment, you won't be able to experience the actual gameplay or see the pictograms. To play the game, you need to copy the provided code into a new HTML file and open it in a web browser or an HTML editor.