Sure! Here's an example of a single HTML file that contains a JavaScript game. The game allows you to pick a head from a selection of pictograms, represented by happy emojis, to build your own robot. You can play the game by selecting a head and seeing it displayed on the screen.
Robot Builder Game
Select a head for your robot:
😀
😁
😃
😄
😍
Your Robot:
To play the game, open the HTML file in a web browser, preferably on a smartphone. You'll see a list of happy emojis from which you can select a head for your robot. When you click on an emoji, the selected head will be displayed below under the "Your Robot" section. You can keep selecting different heads to change your robot's appearance.
Please note that this is a simple example, and you can expand on it to add more features and options to the robot building game if desired.