Sure! Here's an example of a simple Block Breaker game implemented as a single HTML file using JavaScript:
In this game, you control a paddle at the bottom of the canvas using either the mouse or touch event on a smartphone. The objective is to bounce the ball with the paddle to break all the blocks at the top of the canvas. The ball changes direction when hitting walls or the paddle. When a block is hit, it disappears.
Please note that this is a basic implementation to give you an idea of how the game can be structured. You can expand upon it by adding more features like multiple levels, different block types, power-ups, scoring, and more.