To improve amusement through a whole game by closely associating a performance of a symbol variable game with a performance during a big win game and retaining the consistency of the performances.

A-C character modes, ending background patterns and field patterns are constituted by setting various types of patterns classified into A-C character types which are so associated that contents associable with the respective patterns have commonality. A CPU for an integrated control is configured to determine, during the presence of the A-C character mode, an ending background pattern and a field pattern which are classified into the same character type to the performance mode when starting a symbol variable game. Accordingly, in the performances (Fig.11(d)-(f) and (h)) in the respective places based on the respective patterns, the contents associable with the performances in the respective places have the commonality so as to closely associate the symbol variable game (game ending background) with the performance (battle performance) in the big win game according to the performance mode for developing the symbol variable game.