As it is currently written, pressing the "F12" key starts Pong, and pressing the "Escape" key stops Pong. The right and left arrow keys move your paddle. If you hit the ball with the side of the paddle, you change the angle of the resulting bounce. You get a "beep" if you miss the ball. I usually miss, so I hear lots of beeps. Because I miss so much, I decided Pong wouldn't keep score. The longest recorded time before becoming bored with the game is 45 seconds. Pong doesn't affect any data on your spreadsheet.

Here's how to add the pong module into your spreadsheet.  Here's the actual pong module you'll need (you might have to right-click or shift-click it). If you don't want to add Pong to one of your spreadsheets, here's a blank spreadsheet with the pong module already installed. If you click the "Download Now" icon at the top of the page, you get both the separate module and the installed spreadsheet together in a zip file. 

Although the web isn't the place to try to demo "high-speed" action games, the animated picture below should give you some small idea of what the game looks like.