Trivia from the ACNH files (by Alexis#8717)

Updated 2020/09/02


Don’t make click baity videos about this. None of the stuff I mention here is “confirmed” or “future content”. Nintendo can change their mind and for fuck’s sake, stop milking other’s work for your content and get a life. This is just a page to sum up the fun stuff I’ve encountered while spending hundreds of hours of my free time looking into the game files. If you come here to twist the information I provide for free to fit your agenda, please consider being a better human being.

On 1.2.0, Nintendo changed the SLink/ELink value of multiple Special NPCs that weren’t (yet) in the game. I noticed this change on May 19 and I don’t think anybody saw it before as it would be really easy to miss. This suggest that the following were at least being played around by Nintendo before 1.2.0:

On 1.3.0, further changes were made for Wendell (wrl) and Luna (tap), changing their “Social” value, and SLink values. Luna also gets an Umbrella ID associated with her (black lace umbrella).
Umbrella image

On 1.4.0, Jack’s (pkn) “Social” value was changed to 1.

Empty Villager Mottos

Since 1.0.0, the following villager have empty mottos:

These mottos can be found on my repo.

Vegetables & Plants

Vegetables have been coming back and forth under different strings in the executable of the game.
They first appeared in 1.0.0 as “VegetableTomato, VegetableWheat, VegetableSugarCane, VegetablePotato, VegetableCarrot, VegatableSquash” and “SquashOrange, SquashYellow, SquashGreen, SquashWhite”, including some leftover inventory icons for the Squash (that were removed in 1.1.0) as seen bellow:
Squash OrangeSquash YellowSquash GreenSquash Orange
The string was changed to V0, V1, V2, V3, V4, V5 in 1.1.0. They later reapeared in another string on 1.4.0 as “VgtTomato, VgtWheat, VgtSugarCane, VgtPotato, VgtCarrot, VgtSquash” with a new bush: “Plumeria”.

As of 1.4.0, there is a vegetable currently available in the game: Bamboo Shoots (Vegetable_02295).

Dishes, Gyroids, Cafe, Art and Sewing.

There are multiple reference to all three of these across multiple versions. There is not way of knowing when or if they’ll end up into the game but as a TLDR:


Sewing & Dishes:



Having a perfect 660 turnip selling price is ~0.0000053683% per week or about 1 in 20 millions.

Villager encounters on mystery islands

The villager you encounter on mystery island are totally random and based on the following formula for encountering a specific villager:
1/Number of species * 1/(Number of villager in the species - Number of villagers of that species on your island)
This makes the odds of finding a specific cat villager (for example Raymond) 1 in 805 considering you don’t have any cats on your island. On the other hand, finding a specific octopus would be 1 in 105.

If you want to calculate it, use the following tool I made.

D.J. K.K. Icon

There is a D.J. K.K. icon only found in 1.0.0:
D.J. K.K. Icon

Sumo Ring bug

In the 1.4.1 bug fix, Nintendo removed the texture file and icon files for the sumo ring. I found this about 1h30 after the update dropped by making a diff between 1.4.0 and 1.4.1 as a lot of people don’t seem to bother with checking bug fixes.
Bug fixes don’t usually change the content of the RomFS (where the assets are stored) and usually only tweak the ExeFS (executable of the game) so I was kinda surprised when I saw this.

Portuguese support

There are hints of a Portuguese and Brazilian localization being worked on for multiple versions (EUpt, USpt).

Orville and Tommy don’t exist

Timmy and Tommy as well as Wilbur and Orville share the same 3D model.

Real vs Fake paintings

On top of the key differences you’ll see on every guides on the web, real and fake painting also differ in another way: real paintings have signs on the back of the canvas, while fakes don’t. See bellow the back of a real quaint painting (top) vs a fake quaint painting (bottom):

Sherlock Holmes

This one is a bit though to see but if you zoom in on the picture it will be easier. The western literature variant of the book contains an extract of the first chapter of A Study In Scarlet by Arthur Conan Doyle of Dr. Watson’s account of the war.

“…me it had nothing but misfortune and disaster. I was removed from my brigade and attached to the Berkshires, with whom I served at the fatal battle of Maiwand. There I was struck on the shoulder by a Jezail bullet, which shattered the bone and grazed the subclavian artery. I should have fallen into the hands of the murderous Ghazis had it not been for the devotion and courage shown by Murray, my orderly, who threw me across a pack-horse, and succeeded in bringing me safely to the British lines.”


Punk outfits?

The tight punk outfits are internally called TopsTexOnepieceOverallLBondage as “bondage” has become synonimous to latex in Japanese.

Jack is already here!

You can see Jack on the TV Program for the Halloween commercial:

Label’s sketchbook

Her sketchbook actually has a drawing on it.

Nat and Chip

References to Nat (chm) and Chip (bev) can be found in some EventFlow for C.J. (bey) and Flick (chy). This might suggest that C.J. and Flick were added later in the game development.

Non functional TV Programs?

A handful of TV Programs in the game don’t have any audio when viewed on a TV. These are:

This seems to be a bug as all of these actually have multiple audio files that should be triggered at specific keyframes during the animation of the program.