Ah...the emptiness of cyberspace. That would explain all the invisible walls around vegetation, closed doorways early on? :P Such things a casual gamer would hate so much but in the context of the universe, makes complete sense.
In fact my only gamer complaint about the place was the lack of etherial music. Kind of like the sort once you initially enter with Freya. I usually must play some of the "Portal" tracks in the background when exploring there.
OK. Cyberspace represents a barren internet. (Some great theories here, by the way.)
But, what of Nidhogg, that purple cloud?
What is the purpose of such a thing technologically speacking? If memory serves, the creature was to destroy the World Tree. Was it, in essence, consuming unused or bad information?
Can someone better explain.