Sure! Here's an example of a simple Flappy Bird game implemented as a single HTML file with JavaScript. The game can be played on a smartphone and I've used pictograms where possible:
To use this code, you will need to have three image files (`emozi_all/bird.png`, `emozi_chicken.png`, `emozi_rabbit.png`) in the same directory as the HTML file to display the graphics.
This is a basic implementation of Flappy Bird where you control a bird and have to navigate it through pipes without hitting them. The score increases each time the bird successfully passes through a set of pipes. If the bird hits a pipe or the ground, the game ends and the final score is displayed.