To provide a reel type game machine capable of reducing a game control load when abnormality is generated in a game operation.

This reel type game machine informs an outside of the opening of a front door, irrespective of situations under a unit game and not, when detecting that the opening of the front door is detected by an interruption processing executed in every prescribed time (step S100). A prescribed game operation concerned in the reel type game machine is stop-controlled therein (step S101), but the prescribed game operation is not stop-controlled, when detecting the opening of the front door during a period from the time when set to a unit game startable state to the time until finishing the unit game (step S100), and the prescribed game is stop-controlled after the unit game is finished (step S101).