Sure! Here's an example of a simple universe creator game implemented as a single HTML file using JavaScript. This game allows you to create and customize your own universe by selecting different elements and arranging them on the screen.
To use this game, create an HTML file with the contents above and save it with a `.html` extension (e.g., `universe_creator.html`). Then, open the file in a web browser on your smartphone.
The game allows you to select different elements (e.g., star, planet, moon, asteroid) from the menu at the top by tapping on them. Then, by tapping on the screen, you can place the selected element on the canvas to create your universe. You can also resize the screen to fit your smartphone's display.
Note that this is just a basic example, and you can extend and modify it as per your requirements, adding additional features or enhancing the visuals.