Sure, here's an example of a simple text-based game called "Donut Cut" implemented as a single HTML file using JavaScript. This game assumes smartphone operation and uses pictograms:
Donut Cut
Score: 0
Tap the donut to cut it!
In the above code, we set up a simple game where the player needs to tap the donut to cut it. The current score is displayed, and each time the donut is clicked, the score increments and a message is displayed. The donut is represented using a CSS background image.
Please note that in order to make the code work, you'll need to have a donut image file named "emozi_himawari.png" in the same directory as the HTML file.