Sure! Here's a simple implementation of the iconic game Flappy Bird using HTML, CSS, and JavaScript. Please copy the code below and save it in a single HTML file. You can then open it in your web browser to play the game.
To play the game on a smartphone, you can open the saved HTML file on your phone's web browser. The bird will automatically jump when you tap the screen. The objective is to navigate the bird through the gaps between the pipes without colliding. Each successful gap traversed will increase your score.