The Federation Headquarters is where all the management work from The Federation is done. As said by Cucurucho once, its members spend a long time inside its walls. It's also seem to be housing experiments and researches being conducted in the island.
The whole extension of the HQ is unknown, but it's presumed they have settled themselves across the whole island and maybe even beyond.
Description
All of The Federation's rooms, except for its hallways, are bright, white, and mostly empty rooms, with only some furniture laying around. The Headquarters are no exception, despite the offices being way more furnitured than the usual, the buildings are all vast bright white and clean halls, where hallways lead to more hallways, rooms lead to more rooms, and what seems the end is actually hiding an exit or another passage.
From observation, the Headquarters seems to a be ginormous building with no end in sight, extending themselves to seemingly even the Nether.
The entrance of the Headquarters used to feature a big "A0" sign, similarly to the "A1" to "A9" signs found throughout the Laboratory Ruins, and the "AB" sign found by Forever outside of a Nether train station on day 201. The "A0" sign is most likely a reference to Project A0, otherwise known as the Mini-mes project.
Rooms
So far, only a few rooms from the HQ are known, with most of it still to be discovered. The HQ seems to be connected all together by hallways, hidden passages, corridors and rooms. Every room leads to another room.
Hallways
Contrasting to the usual bright and white rooms, the underground hallways are dark, gloomy, and almost seems abandoned entirely. They're covered with vines and have only redstone torches to brighten then, which is why they're all poorly lighted.
These hallways seems to extended to several points in the island and are accessible through hidden elevators on the surface. They lead to other facilities from The Federation.
Cucurucho's Office (0-1)
Osito's secondary office is where it takes most of the players to talk, negotiate, and whatnot. It's settled inside a hall containing three rooms: one leading to a hallway, the other being a hospital room, and then finally the office.
Osito's office has a desk and two chairs, where players sit to talk. Behind the desk, is a painting, hiding a passage to the HQ itself, leading to the Reunion Room and the Office Hall.
Foolish's Office (0-4)
Foolish's office has a desk with a computer and a chest. There's also 2 image frames with a picture of Foolish in his PAAD uniform and his employee of the month for september poster.
On Day 209, Foolish shared his room with WB024 so they could put up a chest and store their things.
On Day 216, Foolish prepared his room to start investigating the murders on the island with WB18.
Reunion Room
As the name implies, it's a room where The Federation's members host their meetings. It's filled with a large rectangular desk and several blue chairs placed around it. Around the room there's several bookshelves and banners, nothing but "Order" in bold black text is written in them.
Office Hall
Seems to be the main plaza to the HQ, as most of its members have been seen to roam around it several times, such as the Faceless Workers and Cucurucho. It's a very large room filled with offices, going from 0-1 to 0-14, however, Office 0-2 is missing, but discovered to be a locked room inside 0-1, Cucurucho's main office. In its middle, there's nothing but a decorated a fountain.
Although the workers where seen walking around the plaza, there were no noticeable hallways, meaning there might be a secret passage laying around the plaza, if not several.
Other Rooms
As was said, The Federation seems to hold facilities around the whole island and maybe even beyond. These facilities can be of any kind.
Around the island, several hidden teleports can be found leading to tiny rooms underground. They seem to have nothing but a few furniture in them, but some have fountains or gardens.
Observatory room in the dungeon.
Other than that, among the Headquarters rooms themselves, The Federation seems to be holding experimentation room, where they hold tests and do researches of some kind in them. Also, Felps was frozen inside one of these rooms, locked with Cellbit, both seemingly being used as lab rats. This room would lead to a tiny observatory room inside one of the several dungeons in the island.
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