Sure! Here's a simple Table Tennis game implemented as a single HTML file with JavaScript:
To play the game, simply copy and paste the code into a text editor and save it with a .html extension. Then open the file in a web browser. You can move the player's paddle by moving your mouse inside the browser window. The computer-controlled paddle will try to follow the ball's movement. The objective is to hit the ball with your paddle and score points by making the ball go past the computer's paddle.
Please note that this is a basic implementation and could be extended to include more features and improvements.