A gaming machine outputs a welcome message or a conversation sentence from an output unit to a player in the sounds and characters while sequentially changing the used language types. When the welcome message in a desirable language in a game is outputted, the player inputs, into an input unit, a response message or sentence responding to the welcome message in the sound or characters using the desirable language. Thereafter, the gaming machine outputs, from the output unit, a message or a conversation sentence in the sound or characters to request an approval to execute the game by using the language used in the response message. The player inputs, into the input unit, a message or a response sentence of an approval for the request message in the sound or characters. After the input of the approval message, the gaming machine converses with the player in sounds and characters using the language approved in the approval message.
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