Wright on 20 July 2016
I guess it applies to games that come with content not found in posterior versions or downloadables as microtransactions/DLC. As someone mentioned already, Final Fantasy Type-0 HD Day One brought you FFXV's Episode Duscae, and so far that's the only way to access it.
Likewise, Dead Rising 3's Day One edition had exclusive skins for the main character based upon Dead Rising 1 and Dead Rising 2 protagonists, and you can't access these skins without the Day One (or via mods on PC).
