In the Vanni network in FNaF Ruin, you hear some whispers, like children. I asked Google, and Reddit came up with an answer, sort of. It said it was children playing when you're in Monty Golf, and the animatronics chasing Gregory.
But I think it may be more. Of course you have the scary music, or whatever you want to call it, then you have the other sounds. The children you hear could be playing, yes, but they also could be screaming. I think the children could be doing either, or possibly a mix of both, some screaming, some laughing and having fun.
I do think, though, that some of the other sounds is Monty and the others chasing Gregory.
But then again, this is all my thoughts, so if you'd like to counter this, or add anything, go ahead. I will take any criticism or advice.
