Sure! Below is an example of a simple guessing game implemented as a single HTML file, using JavaScript and enclosed in script tags. The game is designed for smartphone operation and includes pictograms for a user-friendly experience.
To play the game, simply copy the above code into an HTML file and open it in a web browser on your smartphone. You will see a prompt to guess a number between 1 and 100. Enter your guess in the input field and click "Submit" to see if you guessed correctly. The game will inform you if your guess is too high or too low. Keep guessing until you guess the correct number. Enjoy!