Here's an example of a single HTML file with JavaScript code that implements a pet simulator game using pictograms:
Hunger: 0
Happiness: 0
Congratulations! You won the game!
In this game, there are three clickable icons: "feed," "play," and "stats." Clicking on the "feed" icon decreases the hunger stat, clicking on the "play" icon increases the happiness stat, and clicking on the "stats" icon displays the current hunger and happiness stats. The game will end if the hunger reaches 100 or the happiness reaches -100. If the player keeps the pet alive for 100 seconds, a congratulatory message will be displayed.
Note: Make sure to replace the image URLs in the `<img>` tags with the actual paths to the pictogram images.