PURPOSE: To relax the stiffness and fatigue of a hand, etc., when a game is performed for a long time.

CONSTITUTION: A low-frequency oscillator for low-frequency treatment and an output adjusting means to adjust the output of low-frequency of the low-frequency oscillator are provided in this pachinko (Japanese pinball game) machine 1. An electrode 5a on one side out of electrodes from which the low-frequency are outputted is formed on the outer face of an operating handle 4 to perform a ball hit operation, and a counter pole 14a is provided on a spherical surface on the upper face of the case 10 of a relay device provided on the left lower side of the pachinko machine 1. A guest player continues to hold the operating handle 4 with the hand while playing a game. At this time, when the counter pole 14a is touched with the other hand, it is energized, which causes to receive the low-frequency treatment to relax the stiffness and fatigue of the hand.