Sure, here's an example of a simple game implemented as a single HTML file using JavaScript, enclosed in script tags:
When you open this file in a web browser, it will display a set of shuffled pictograms. The pictograms used here are represented as emojis in this example, but you can replace them with actual pictograms of your choice. The game starts automatically when the page loads, and you can play by trying to remember and match the pictograms.
Note that this is a very basic game implementation and can be expanded upon to add more features, scoring, levels, etc.