Sure! Here's a simplified version of Pong with an AI opponent. The game is implemented as a single HTML file and uses JavaScript. The AI opponent will try to win, but might make occasional mistakes. The first player to reach 7 points wins. The game can be played on a smartphone as well.
To play the game, you can copy the above code and save it as an HTML file. Open the file in a web browser, and you should see the Pong game running. Use the "W" and "S" keys (or the up and down arrow keys) to control the user paddle on the left side of the screen. The AI opponent will try to defeat you. The first player to score 7 points wins!