Sure! Here's an example of a simple game called "Midnight Massacre" that you can play on a smartphone using pictograms:
To play the game, simply save the code above in a single HTML file (e.g., `game.html`), and open it in a web browser on your smartphone. You will see a square representing the player, and several red squares representing enemies. Move the player square by dragging it with your finger. Avoid touching the red squares, as it will end the game. Your score will increase as time passes, and a game over message will appear with your final score when you collide with an enemy square.
Note that this is a simplified example, and you can modify and enhance the game as per your requirements and preferences.