If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Knock the soccer ball between your players and into the enemies goal to score. Don't let the AI win!
Use the Left and Right Arrow Keys to move your players Left and Right. Where the ball hits the player determines the angle the ball will head. Hitting on the edges allows for more angled shots. Hold down Spacebar for turbo kicks, but keep an eye on your levels!