One Player Pong is a Scripts software developed by jdonohue.com. After our trial and test, the software is proved to be official, secure and free. Here is the official description for One Player Pong:

BSEditor: Very simple game of Pong. Use the Up and Down arrow to control the paddle and keep the ball from getting past you for as long as you can. If the paddle doesn't MOVE try clicking on the applet.