The game is based on the classic Pong, if you have never played it before where have you been for the last couple of decades? 🙂 Basically think of Pong as a game of Tennis, you control the racket and must return the ball to your opponents half of the court. If you miss the ball you will loose a point.
However in this version to keep in tune with the Street Fighter theme you will loose a portion of your energy – no energy = game over. Players can now also launch fireballs at their opponent which if properly timed will stun them for a few vital seconds which could make them miss the ball.