As a language model AI, I can provide you an example of a simple game implemented as a single HTML file using JavaScript. Please note that this is a basic example and you may need to further customize it based on your specific game requirements. Here's an example:
Pictogram Game
Score: 0
In this game, pictograms are randomly generated and displayed on the screen. When a pictogram is clicked, the score is incremented by one, and the clicked pictogram is removed from the screen. The game starts automatically by calling the `startGame` function. The score is displayed at the top of the page. You can add more pictograms to the `pictograms` array to expand the selection.