To make full use of land by enabling a plurality of vertically split spaces to be simultaneously used in the same facility and to provide an optimum space, an optimum number of seats, an optimum game-watching environment and the like that match the kind and scale of the game, etc.
This structure has a fixed arena floor 3 provided in the center of a first floor 2, a plurality of seat floors 4b, 4c, 4d provided in a space above the portion of the first floor 2 except the fixed floor, and a plurality of movable arena floors 5a, 5b, 5c capable of freely rising and falling within the space above the fixed floor 3 and being stopped in a certain position. The movable floors are provided in such a way as to be stopped in proximity to the seat floors so that together with the seat floors, it can separate the space horizontally.
SO DAISAKU
HAYASHIDA HIDETOSHI
OKAMOTO HAJIME
