To provide a game machine which enables a game player to digest a game to the end with satisfaction within a predetermined period.

During an AT set, a slot machine 1 changes an AT state between normal AT and advantageous AT, and executes an advantageous background with a higher degree of advantage than a normal background or the relevant normal background as a background performance for the AT set. In addition, the slot machine 1 switches the background performance in execution depending on whether the AT state is normal AT or advantageous AT, and executes a notice performance for suggesting that the background will be switched. When the number of remaining AT games for the AT set is a specific period or less, the slot machine 1 disables the execution of the notice performance.