Sure! Here's an example of a simple game implemented as a single HTML file, using JavaScript and enclosed in script tags. The game allows you to control a man using a virtual joystick and is designed for smartphone operation. Pictograms are used for visuals.
In this game, you can control the movement of the man inside the game container by dragging the joystick inside the joystick container. The man will move based on the position of the joystick. Note that this is a simple example, and you can modify and enhance it further based on your requirements.