Sure! Here's an example of a simple Block Breaker game implemented in a single HTML file using JavaScript and enclosed in script tags:
To play the game, you can copy the above code into a new HTML file, save it with a `.html` extension, and then open the file in a web browser on your smartphone. The game will start automatically, and you can use the left and right arrow keys or swipe gestures to control the paddle and bounce the ball off it to break the bricks. If the ball falls off the screen, the game will be over and you can reload the page to play again.
Note that this is a very basic implementation, and you can further enhance it by adding more features like levels, scoring, power-ups, and sound effects based on your requirements.