Hold 7 + 8 + 9 + 2 after the brick formation appears but before the ball is released.
Hold 7 + 8 + 9 + 3 after the brick formation appears but before the ball is released.
Hold 7 + 8 + 9 + 4 after the brick formation appears but before the ball is released.
Press * + # when robots appear during game play.
Hold 1 + 3 + 5 after the brick formation appears but before the ball is released.
Hold 1 + 6 + 7 after the brick formation appears but before the ball is released.
Hold 1 + 5 + 7 after the brick formation appears but before the ball is released.
Hold 7 + 8 + 9 + 1 after the brick formation appears but before the ball is released.