To simplify a structure and facilitate the handling.

When a plurality of Pachinko machines are put on a loading platform 25, the plurality of Pachinko machines are so aligned and disposed on the loading platform that a lower lateral piece 7 of a game machine frame 1 faces the side of the loading platform 25, the front sides of the plurality of Pachinko machines face in the same direction and the plurality of Pachinko machines are spaced in a vertical state preventing the contact with each other. Then, an abutment plate is covered over the game machine frames 1 from the upper sides of the game machine frames 1, a board side engagement member 14 is superposed on a frame side engagement member 11 facing the side of a fixed frame 2, and when the abutment board 13 is pushed from the top to the bottom, a fastener locking element of the frame side engagement member 11 and a fastener locking element of the board side engagement member 14 are mutually entangled and engaged, and the plurality of game machine frames 1 are connected to each other with a game machine retainer so as not to fall.