It is done. I went with 'zone' as it seems like a more specific word than 'area'. Also, should I add Silent Hills to the list? There's no specific page for PT, but adding Silent Hills seems a little wrong, since that section might not be in the full game.
@beachthunder: Strictly speaking, the Lost Woods and similar locations are mazes. There's a specific path that must be taken to get from A to B, but the path is obfuscated by trickery of one sort or another.
Well, I'm more thinking about things like PT, where you're going down a linear path over and over and it's the actions you perform that affect your progression.
As for your concept proposal, maybe calling it a Maze Puzzle would work?
Well, strictly speaking mazes are a type of puzzle. I've been racking my brain over this for a while and the best I have is "Disorientation Area". I'm pretty happy with the word disorientation as it suggests being lost but doesn't necessarily mean there needs to be a maze (the PT and SMB examples don't really involve anything I'd call a maze). Also, the word loopable is terrible, and not really even a word. I was thinking 'Disorientation Location'...but, yeah, that seems a bit too goofy. About 'puzzle' - I think these areas are not necessarily all that puzzling - they come across as a specific kind of lock/key mechanism; i.e. you can only pass if you have talked to someone that tells you the specific directions. I'll stew on this a little bit more then add it. Maybe I'm thinking a million times too much about stuff :|