Sure! Here's an example of a simple shooting game implemented as a single HTML file using JavaScript. The game can be played on smartphones, and pictograms are used to depict the game elements. Please note that this is a basic example and can be further expanded upon to add more features.
This is a very basic implementation of a shooting game where the player is represented by a blue square on the canvas. The player can be controlled by tapping the left and right arrow buttons on the smartphone. There is no shooting functionality in this example, but you can expand upon it by adding enemies, bullets, scoring system, and collision detection to create a more complete shooting game.