Sure! Here's an example of a simple game implemented as a single HTML file using JavaScript:
Pictogram Game
This game displays a grid of pictograms (represented by emojis) and allows the player to click on them. When a pictogram is clicked, its background color changes to green. The pictograms are initially shuffled randomly.
You can save this code as an HTML file and open it in a web browser to play the game. The game is designed to be responsive and can be played on a smartphone or any other device.