Sure! Here's an example of a simple game implemented as a single HTML file that involves a tornado and a town, using JavaScript and pictograms:
In this game, the player is represented by a blue circle, and the tornado is represented by a black circle. The player can move horizontally on the canvas by swiping left or right on a smartphone. The objective is to avoid colliding with the tornado as it moves downward. The score increases each time the tornado reaches the bottom of the canvas without colliding with the player. If the player collides with the tornado, a game over message is displayed, and the game is restarted by reloading the page.
Please note that this is a basic example, and you can improve and customize it further based on your requirements and preferences.