Avalon: illusions of the higher order

You might say that Avalon is about addiction to MMO games which forces people to get lost in virtual reality because they are dissatisfied with their lives, and there is no principal difference between the perception of reality and illusion. But author's name (Mamoru Oshii) tells us that the movie should be a little bit deeper, and it indeed is. The guide to its depths is the legend of Avalon, a mysterious island where king Arthur had found his final resting place. It leads us through the chain of illusions which goes beyond the virtual reality and touches themes of some fatal flaws of certain social orders along with the place of art in them. But let's look at the virtual reality first.