Sure! I can help you create a simple game using pictograms in a single HTML file. Here's an example of a game that you can play on a smartphone:
Emoji Match Game
To play the game, you can copy and paste the above code into a new HTML file and open it in a web browser on your smartphone. The game will display a grid of cards with different emojis on them. Your objective is to find all the matching pairs of emojis by clicking on the cards. Once all the pairs are matched, a congratulatory message will be displayed, and you can reset the game to play again.
Note: The game uses JavaScript to handle the game logic and interactivity. The emojis used in the game can be replaced with any other pictograms or images as per your preference.