Sure, here's a simple implementation of a Flappy Bird game using dots as pictograms. The game will run in a single HTML file and include JavaScript enclosed in script tags:
To play the game, open the HTML file in a web browser on your smartphone. Press the spacebar or tap on the screen to make the dot bird jump. The objective is to navigate the bird through the gaps between two green bars. The score increases each time the bird passes through a gap, and the game ends if the bird hits a gap or goes out of bounds.