Sure, here's an example of a simple shooting game implemented as a single HTML file using JavaScript:
Shooting Game
This HTML file represents a simple shooting game where the player, represented by a pictogram of a player, can move left and right using the left and right arrow keys. The player's goal is to shoot down the falling enemies by clicking on them using a bullet. The score is displayed at the top of the game. The game starts automatically on page load.
Note: To run this HTML file as a game, you would need to replace the `emozi_all/game.png` and `emozi_all/enemy.png` URLs with actual links to the desired pictogram images.