Sure, here's a simple HTML game using JavaScript. It is playable on smartphones and utilizes pictograms:
This game is a simple implementation of the Merge Game, where you swipe the cells in four directions to merge adjacent cells of the same value. The goal is to merge cells and reach the highest value possible while preventing the grid from being completely filled. Whenever two cells with the same value merge, your score increases.
You can play this game by opening the HTML file in a web browser on your smartphone. The game uses swipe gestures to move the cells. Simply swipe left, right, up, or down to move the cells accordingly. When you can no longer make a valid move, the game ends, and your final score is displayed.