When you start the game, immediately sound comes out.

When you start the game, immediately sound comes out.

how can i fix this problem ?

Hello!

If you have included a sound cue into your level, just check if it is marked as auto active. If yes, uncheck that.

Click the sound actor and scroll down the properties until you find it. See picture below:

Then you can use a box trigger to turn on or off the sound!

Good luck