Sure, here's a simple shooting game implemented as a single HTML file using JavaScript and enclosed in script tags. It is designed for smartphone operation and uses pictograms for visuals:
To use this game, you need to create two image files: `emozi_all/game.png` and `emozi_all/enemy.png`. Place these images in the same folder as the HTML file. You can use any image files you like for the player and enemy sprites. The arrow keys can be used to move the player left and right, and the spacebar can be used to shoot bullets. The game's objective is to shoot the enemies and earn points. The score is displayed on the screen.