To provide a switch device for a game machine sequentially outputting different operation signals in a series of operations, and allowing selection of an output signal according to an operation direction.

A start lever unit 1 is provided with a start sensor 60, and a MAX bet sensor 70. An operation part 12 is formed to move a light shielding plate 81 to the lower direction sequentially detected by the MAX bet sensor 70 and the start sensor 60, to the front direction detected only by the MAX bet sensor 70, and to the upper direction detected only by the start sensor 60. The kind of a detection signal to be output from each detection sensor can be selected by an operation direction of the operation part 12.