Sure, below is an example of a simple Flappy Bird game implemented as a single HTML file using JavaScript. It is designed for smartphone operation and utilizes pictograms for the game elements. The processing starts automatically once the HTML file is executed.
Please note that in order to see the game graphics (pictograms), you will need to have the corresponding image files (`emozi_all/game.png`, `emozi_chicken.png`, and `emozi_rabbit.png`) in the same directory as the HTML file.
This is a basic implementation of Flappy Bird as per your requirements. You can further enhance it by adding sounds, improving the visuals, or adding more interactive elements.