Sure! Here's an example of a simple game written as a single HTML file, using JavaScript and pictograms:
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In this game, a function named `playGame()` is called to start the game. It uses `setInterval()` to repeatedly call the `callBigChungus()` function every 1 second. In `callBigChungus()`, the displayed pictogram is updated to show the message "Big Chungus." The game will continue to display this message repeatedly.
The displayed pictogram used here is a simple bunny emoji, representing Big Chungus. Feel free to modify the code and styles to suit your preferences or add more functionality to the game as desired.