Sure! Here's a simplified version of the Flappy Bird game implemented as a single HTML file with JavaScript code enclosed in script tags:
This implementation creates a canvas element where the game is rendered. The player controls the bird by tapping the spacebar or pressing the up arrow key to make it jump. The goal is to navigate the bird through the gaps between the pipes without touching them. The score increases with each successfully passed pipe. When the bird collides with a pipe or goes out of bounds, the game ends, and the score is displayed.
Please note that this implementation is a simplified version of the original Flappy Bird game and may not have all the features or graphical fidelity of the official game.