Sure, here's an example of a simple bird game implemented as a single HTML file using JavaScript. It uses pictograms and is designed for smartphone operation:
To play the game, you can copy the entire code into a new HTML file (e.g., `bird_game.html`), and open it in a web browser or on a smartphone. The game will start automatically, and you can control the bird by tapping or touching the screen to make it fly up. The objective is to avoid hitting the ground. When the bird touches the bottom of the canvas, the game will end and a "Game Over!" message will be displayed using an alert box.