Sure, here is an example of a simple spaceship game implemented in a single HTML file using JavaScript:
In this game, a spaceship is represented by the
🚀 pictogram and can be moved left or right within the game container using touch gestures on a smartphone. The spaceship will be restricted to the boundaries of the container.
Please note that this is just a simple implementation to demonstrate the basic concept of the game. You can further enhance it by adding more features and functionalities as per your requirements.