Sure! Here's an example of a simple shooting game implemented as a single HTML file using JavaScript. The game assumes smartphone operation and uses pictograms:
This game allows the player to control a spaceship using their smartphone's touch gestures. They can move the spaceship horizontally by dragging their finger on the game board and shoot enemies by tapping on the game board. The objective is to shoot as many enemies as possible without getting hit. The player's score is displayed at the top, and the game ends when an enemy collides with the player's spaceship.