Gaming machine with a predetermined number of symbols scrolled for display prior to wild symbol and having a predetermined background color and control method thereof

Abstract

A slot machine includes a display on which symbols are rearranged in partitioned regions arranged in a matrix pattern including a plurality of columns and rows. The display includes a plurality of display windows corresponding to the respective columns for each unit game. In each of the display windows, for each slot game, executed is video display in which a symbol array having a plurality of symbols arranged therein is scrolled in an arrangement direction of the symbols. By this video display, the symbols arranged in the partitioned regions are rearranged in the slot game. When a feature game trigger is established during the slot game, an additional 'WILD' symbol is inserted into the symbol array. The symbols in each symbol array have background images, respectively. The background images of a predetermined number of consecutive symbols immediately upstream of the 'WILD' symbol are displayed in a predetermined color, and the background images of the other symbols are displayed in a normal color.