As an AI language model, I can help you create a simple game in a single HTML file using JavaScript. Since you mentioned smartphone operation, let's create a basic guessing game where the user has to guess a pictogram representing an object or action. Here's an example implementation:
Pictogram Guessing Game
In this game, a random pictogram will be displayed (you can add more to the `pictograms` array), and the player needs to enter their guess in the text input field. Once they click the "Check" button, the JavaScript function `checkGuess()` will compare the user's guess with the randomly selected pictogram and display the appropriate result message.
Please note that this is a very basic example, and you can expand and customize it further based on your requirements.