This digital world that will be created by the project, can use 3D reality? Use as for example playstation vr?
Yes AR and VR are possible. The Arcona team have found the most success integrating their apps with the real environment though. i.e. Rebuilding old castle ruins and recreating battles on the actual battle-grounds they happened.
So that is why the digital land is key - it allows you to own a specific area of land where you can construct your project however you please.