Please check the [Media Volume] of your device.

■ How to check the media volume

1. Press the volume control button of your device.

2. Check the volume control

If the media volume is enabled, check it on the system.

■ How to check the sound of MIR2M : The Grandmaster game. 

1. Click [Setting] 

2. Adjust your music and sound settings as needed in [Music Settings] or [Sound Settings].