To provide a rotary drum type game machine that can perform various predictive renditions on whether a special game status advantageous to a player of an AT game or the like will occur or not after a bonus game.

A main control part 400 decides the length of a waiting time at the finish time of a bonus game by a lottery when the bonus game starts and sends the information regarding the length of the waiting time to a rendition control part when the bonus finishes (S304). A rendition control part 410 makes a bonus game duration rendition related to the length of the waiting time appear to a rendition device during the bonus game based on the received information (S731-S733). If the received information means the length of the waiting time when a predetermined bonus finishes, the rendition side game status after the finish of the bonus game is transited to an AT game status advantageous to the player (S741, S743, S745).