Sure, here's an example of a simple joystick pixel shooting game implemented in a single HTML file using JavaScript:
This HTML file sets up a canvas element for rendering the game and implements a simple joystick control mechanism for moving the player around the screen. The game loop continuously updates the player's position based on the joystick movement and redraws the game objects. You can further enhance this code with pixel shooting functionality, enemy entities, score tracking, and more, depending on the complexity of the game you want to create.