Hi galaxie, I mean beyond physical reality to be specific. I think NDEs are the richest source of evidence for this but I think there are others as well. You point about mind games is valid even from the NDE arena. For instance sometimes people see a religious icon as part of the experience but these seem to often reflect the cultural biases of the person. If God is as one might expect, like us, would he not only use one religious figure regardless of the culture? It is a point of concern I admit. The fact this happens also opens up the obvious possibility that these phenomena are a product of the dying mind only. However other aspects of NDEs contradict this as the explanation. It could then be that whatever God is it doesn’t care about religion in the way we think it should.
I think the idea of another nonphysical realm apart from this one is quite possible and valid and is perhaps the place where this realm comes from. What caused the organisational components of it I don’t know but I do place the label God here. It’s not the traditional God of the gaps but before there were gaps because it’s before science came to be or the laws of physics established.