Sure! Here's an implementation of the popular game Flappy Bird in a single HTML file using JavaScript:
In this implementation, the game can be played by tapping on the screen (for smartphones) or by pressing the spacebar key. The objective of the game is to navigate the bird through the gaps between the pipes without colliding with them. The score increases each time the bird successfully passes through a set of pipes. Once the bird collides with a pipe, the game ends and the final score is displayed.
Note: You'll need to replace `'emozi_all/bird.png'`, `'emozi_chicken.png'`, and `'emozi_rabbit.png'` with the actual paths to the respective pictograms for the bird and the pipes.