Sure, here's a simple game implemented as a single HTML file using JavaScript. The game is designed for smartphone operation and uses pictograms.
Pictogram Game
Score: 0
Tap a pictogram
This game displays three pictograms as div elements. When the player taps on a pictogram, their score increases by 1, and the background image of the selected pictogram is replaced with a new random pictogram image. The game continues indefinitely, and the player can track their score on the screen.