Click the green flag to start (or reset) the game. Use the mouse to move the "paddle" (the soccer guy). Bounce the ball against the paddle to score a point. Get 50 points to win the game. Don't let the ball touch the ground or you will lose.
Music from International Superstar Soccer 64 (or Mundial Ronaldinho Soccer 64, if you prefer). "YOU LOSE" sound from Link: The Faces of Evil. "Scratch Game Tutorial #2: Pong Game" Made by Ethan B. for GAME-1303-003.