The classic pong game. Two players. Press the buttons to move paddles up/down. Ball bounces back and forth. If you fail to catch it, your opponent gets one point. Score difference is showed with blue LEDs. Blue LED = lead by one point. If you then win another point, you win the game, and your player number (“1” or “2”) is displayed. Bonus feature – Dual boot: When powering up, you have to press one of the two rightmost buttons. One of them starts pong, and the other one starts … that’s right: The alphabet! You can then scroll through the alphabet by pressing the buttons. Exactly why this game of pong also contains an alphabet, is a mystery whose answer is lost in the mists of time. Link