Sure! Here's an implementation of a simple Atari Pong game with lasers in a single HTML file using JavaScript:
You can open the file in any web browser to play the game. Move your mouse vertically on the game canvas to control the player's paddle and try to hit the ball while avoiding the computer's paddle. When you hit the ball with the player's paddle, a laser will appear momentarily and move towards the right side of the screen. The game will reset if the ball goes beyond the left or right side of the canvas.