Sure! Here's an example of a simple game implemented as a single HTML file, using JavaScript and enclosed within script tags:
Simple Game
Score: 0
In this game, a single pictogram (represented by a red circle) is displayed on the screen. The player needs to click on the pictogram to increase their score. Each time the pictogram is clicked, the score is incremented and a new random position is generated for the pictogram. The current score is displayed on the screen.
Please note that this is a basic example and can be expanded upon to include more features, levels, or additional complexity based on your requirements.