Sure, here's a simple implementation of the classic Snake game using JavaScript. You can copy this code into a single HTML file and enclose it within script tags. This version of the game is designed to be played on a smartphone and uses pictogram-like characters.
To play the game, simply copy the code into an HTML file and open it in a web browser on your smartphone. Use the arrow keys on your virtual keyboard to control the snake and avoid collisions with the walls and its own body. The objective is to eat the apples that appear randomly on the screen and grow the snake's body while avoiding game over.
Enjoy playing the Snake game!