Sure! Here's a basic example of a shooting game implemented as a single HTML file using JavaScript and enclosed in script tags:
This is a simple shooting game where you can control a player character using the left and right arrow keys on your smartphone. Pressing the spacebar shoots bullets, and if a bullet collides with the player, the game ends and displays a game over message (you can modify this behavior as desired). The game loop continuously updates and renders the game elements on the canvas.
Please note that this is just a basic implementation and can be expanded upon to include more features, levels, scoring, etc., based on your requirements and preferences.