Sure! Here's an example of a simple game implemented as a single HTML file, making use of JavaScript and using pictograms:
This game displays a moving pictogram (represented as an emoji) on a canvas, which bounces off the edges. The pictogram is selected randomly from a predefined list. You can customize the available pictograms by modifying the `pictograms` array. When viewed on a smartphone, the game will adapt to the screen size. The game automatically starts when the page finishes loading.