1. A gaming machine comprising: a housing; a control unit mounted in the housing for generating a matrix of symbols and a background; a display mounted on the housing and in communication with the control unit, the display device including: a first layer for displaying the background; a second layer overlying the first layer for displaying the matrix of symbols having a top row, the second layer being at least partially transmissive to permit simultaneous viewing of the background and the matrix of symbols; the background highlights at least one of the symbols of the matrix of symbols; and the matrix displays more than one scatter symbol and the control unit generates an image resembling light beams extending on the background layer from each scatter symbol on the background layer to the top row to highlight the scatter symbols.