kBounce is played on a field surrounded by a wall with one or more balls bouncing off the wall within the field. The player advances to the next level by trapping the ball in progressively smaller spaces, until the playing field has been reduced by at least 75%. New walls are built by touching anywhere in the active field. Walls are built horizontally, relative to the orientation (portrait or landscape) of the device. If a ball hits a wall during construction, the wall is removed and the player loses a life. An extra ball and an extra life is added to each new level. The number of lives is always equal to the number of balls, i.e. Level 1 = 1 ball, 1 life.