Sure, below is an example of a simple number guessing game implemented as a single HTML file:
Number Guessing Game
Can you guess the number between 1 and 100?
This is a simple number guessing game. When you open the HTML file on a smartphone, it will display a message asking you to guess a number between 1 and 100. You can input your guess and the game will determine if it's too high or too low. If you guess the correct number, it will display a congratulatory message with the number of attempts made. You can then choose to play again or end the game.
Note: This is a basic example and does not include pictograms, but you can enhance it by adding appropriate images and styling as per your requirements.