Sure! Here's an implementation of Flappy Bird as a single HTML file using JavaScript and pictograms. Please note that this is a simplified version of the game.
To play the game, save the HTML code above as a file, e.g., `flappybird.html`, and open it in a web browser. You can control the bird's movement by touching/clicking on the screen. The objective is to navigate through the gaps in the pipes without colliding. Your score will increase for each successfully passed pipe. If you collide with a pipe or go out of bounds, the game will end, and your score will be displayed in an alert message.