Sure! Here's an example of a simple Snake game implemented in a single HTML file using JavaScript:
This implementation will enable you to play the Snake game on a smartphone or any modern web browser. The game logic is written in JavaScript, and it uses the HTML5 `<canvas>` element to draw the game graphics. The game can be controlled using the arrow keys on the keyboard. Pictograms are not used in this implementation, but you could further enhance the game's appearance by adding custom graphics or using image sprites instead of simple colored rectangles to represent the snake and food.