And although I already kinda explained, I'll reiterate because apparently this thread is full of entitled retards who:
(a) Seem actively hostile towards the idea of secrets EXISTING despite this being an undiscovered secrets thread.
(b) Apparently think the only class of secrets is "sonic is a playable character"-tier shit.
(c) Can't tell the difference between me and an impersonator anon despite the latter making claims which contradicted what I said in the first place.
Like jesus christ is there a guy handing out retard pills at the door to this thread or what?
Anyway: the scratched tree doesn't do anything. I highly doubt there's any code referencing it. It's more of a signature referencing stuff they plan to do in the future.
It's not an entry point to the puzzle. Before 2015 I doubt there were any games with entry-point clues because nobody was supposed to know about it yet prior to that. There are a number of games, no doubt many more than I'm aware of, which tie into the puzzle at this point, though, it's not just Zelda by a long shot, and not even just Nintendo-labelled stuff, almost like there's ~a giant media conspiracy~ or something.
Investigating mysteries in these games eventually leads to a much larger cross-media puzzle which they've been implementing upside-down for a long time, such that it would only make sense later on, yet somehow stretch backwards into earlier games and even retroactively contextualise weird connections between unrelated games that we're all aware of. Continuing that trend I'm gonna assume that future games will make the clues easier and easier to spot until they're eventually hitting everyone over the head with certain revelations that come along with it.
With knowledge of later parts, the tree makes sense, but it does't fucking do anything.