Sure, here's an example of a simple game implemented as a single HTML file using JavaScript and pictograms:
Emoji Pictogram Game
Tap on the correct emoji to score points!
Score: 0
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This game displays a random emoji on the screen, and the player must tap/click on the correct emoji within a given time interval to score points. If the player taps on the wrong emoji, the game ends, and the final score is shown in an alert.