A gaming machine includes: a CPU 106 which determines whether or not the game state is to be switched to a special game state advantageous to a player; mechanical reels 30A through 30C formed of a translucent material to display multiple kinds of indicating information variably and statically; a motor driving circuit 120 which controls the mechanical reels 30A through 30C; a water tank 500 formed of a translucent material to retain liquid, and provided behind a display screen 10; lamps 650a through 650w for emitting multiple kinds of lights toward the liquid stored in the water tank 500; and a drive control circuit 300 which performs a control operation that instructs the lamps 650a through 650w to emit a light selected from among the multiple kinds of lights according to the result of the determination made by the CPU 106.