Sure! Here's an example of a simple "Flappy Bird" game implemented as a single HTML file using JavaScript, enclosed in script tags:
To play the game, simply copy the above code and save it into a file with a ".html" extension. You can run the file in your smartphone's browser, and you should be able to play the "Flappy Bird" game using pictograms (rectangles) as visual elements. The bird is represented by a yellow rectangle, and the obstacles as green rectangles. The score is displayed at the top left corner of the canvas.
Enjoy playing "Flappy Bird" on your smartphone!