Sure, I'm glad to help you create a game using HTML, JavaScript, and pictograms. Below is a simple example of a game where you need to match pairs of pictograms. It can be played on a smartphone. Please note that you should save the code as an HTML file and open it in a web browser to play the game.
Pictogram Matching Game
In this game, you can replace the pictograms inside the `gameBoard` div with your desired symbols or pictograms. When you click on a card, it flips over, and if you match two cards with the same symbol, they stay open and turn green. The game is completed when all cards have been matched. When the game is completed, a congratulatory message will be displayed.