There are countless sectors on Immensus, some drastically different while others are remarkable similar (view "Immensus" factbook for explanation). The following is a list of the currently introduced/discovered Sectors. Sectors that are more isolated or keep to themselves are but are still open to newcomers and people leaving are yellow, Sectors that are under a quarantine of sorts where people approach at their own risk are red, and open Sectors that will actively interact with others regularly are green. Most Sectors are some form of alternate earth, with real life earth geography but notable differences to it such as a zombie plague or regularly practiced magic. There are some however that are not an alternate earth, the only similarities being it has humans and solid ground. Most Sectors are also based off of external sources, such as a show or book series. These descriptions are only supposed to be rather basic outlines, however since most Sectors are based off other sources you can just look up said source (which would be mentioned in the description) and simply read up on all you want to know. That said, onto the list:

Amestris Sector- This is a sector based off of the Manga/Anime series "Full Metal Alchemist". It has dominantly past technology however it does have select examples of advanced technology, such as their prosthetic arms that exceed the technology of even real life prosthetic limbs. This Sector is the home to alchemy, as they call it, though the rest of the world knows it as transmutation magic.

Bending Sector- This sector is based of the quasi-anime, Avatar the Last Airbender. In this Sector, there's an innate ability some people are born with while others are not where one can bend and manipulate earth, air, water, or fire at will. There is one person however, the Avatar, that can bend all four elements. There is only one avatar at a time, and should they die then they are reincarnated in a cycle. Technology in the Sector is mostly past based, though there's also some fantasy tech that revolves around "bending" as they call it.

Blacklight Sector- This sector is based off the somewhat popular video games, Prototype and Prototype 2. In this sector the US government created a zombie like virus, known as Redlight, which was let loose on a small town in Idaho for testing. After promising results the town was wiped out and all residents, uninfected and survivors alike, were killed by a special forces organization known as Blackwatch. Decades after this incident the virus was accidentally let loose again, but this time new and improved with a much larger infection site: New York (this is where it splits away from the official prototype story). The improved virus, known as Blacklight, ultimately performed worlds beyond the original. After months of fighting the virus spread across all of North America, causing the country to be put under heavy quarantine to prevent it from spreading into South America or anywhere else in the world as well. It is a constantly ongoing battle to try and contain the infected, keeping it from spreading any further out of control, with Blackwatch leading the fight....and they are only interested in containing the virus, they literally don't care for civilian lives at all. They will kill any civilians who get in their way, refuse to comply, or that come in contact with the infected "just to be safe"...and without any hesitation whatsoever. In fact, aiding civilians literally gets them yelled at by their superiors, because that isn't their mission. Their mission is only to attempt and prevent geographic spread of the infection. There are four types of zones that dot the continent: Green zones, which are infection free so people can live out relatively normal life, but they are still oppressed by Blackwatch forces who keep a close eye over the area. Then there are Yellow Zones, which have a noteworthy infected presence and are teetering on either being saved or lost if the infection can't be contained there. After that are Red Zones which are essentially war zones consisting only of the infected and those fighting to contain it, still trying to regain control over the area by just wiping them all out in what is typically a losing battle. Then lastly there are Black Zones, which are completely lost and have been given up on. The only efforts on containing them are through quarantine around the borders to prevent the heavy infected presence within from getting out. New York City, now known as "New York Zero" due to it being ground zero of the infection, is one such Black Zone. Technology of this Sector is mostly modern, with some science fantasy.

Blue Seas Sector- This sector is based off of the Manga/Anime series "One Piece". This sector is 'filled with pirates who are constantly battling against the Blue Seas government and their primary military force, the Blue Sea Marines. Technology in this sector is mostly past tech, such as swords and cannons, however select uniquely skilled shipwrights, inventors, and engineers can make technology of modern day and future. There is also an alliance with The Great Chili Sector and there are teleporters created by the Blazeheart Pirates between the two Sectors, though said teleporters are between Blazeheart Pirates controlled islands. As such life in the two Sectors have blended together, especially around the coasts and islands of The Great Chili. This Sector is the home to the life energy of haki.

Earth Land Sector- This sector is based off of the Manga/Anime series "Fairy Tail". Here magic is the life energy of the sector which is a regular practice in life and can be seen all around. Established wizards guilds which take on various jobs, serving almost as a form of mercenary group, are also very common. Technology is as a whole past tech, however through the use of magic they create fantasy technology.

Enkindled Sector-
This sector is based off the Souls series, i.e. Demon Souls, Dark souls 1, 2 and 3 and finally Bloodborne. This sector takes place in the Dark Souls the time after the Chosen Undead enkindled the Age of Darkness by failing to light the first bonfire. The lands now being filled with dangerous creatures and creatures of the abyss. Humanity struggles to survive against the onslaught of dragons, giants, abyssal creatures and the hallowed. Hallowed are creatures that were once human but now prey on the souls of the living to restore their own lost humanity. The Chosen Undead have vanquished the wielders of the Lord Souls, powerful beings with powerful souls, and as a result have become godlike beings in their own rights. Upon the death of a Chosen Undead, their souls scatter to find new hosts to aid in gifting them the godlike powers that their predecessor possessed. These chosen souls are continuously searching to find worthy beings willing and able to rekindle the age of fire and save humanity from going extinct. Those worthy souls who are willing to fight have banded together to try and restart the Age of Fire forming a faction as the Enkindled Crusaders.

Fae Sector- This sector is, of course, another alternate Earth based of the sy-fy original tv series Lost Girl. A race of supernatural creatures including but not limited to vampires, werewolves, goblins, succubus, trolls, sirens, unicorns, and nymphs. The list of species considered Fae is very extensive. Some look human while others are insects or inhuman beasts. Technology in this sector for humans is modern while the Fae have a variance of past, modern, and future tech.

Fall Out Sector- This is another alternate Earth which is based off of the Fall Out video game series. As such it has suffered from an all out nuclear war that has forever changed the lifestyle and overall environment of the sector. The America's are semi-recovered wastelands (just like in the games), most of Eurasia is stuck in a perpetual Nuclear Winter, Britain has an attempt at a loosely reformed government structure based on an imitation of the Feudal System (which kind of works...a little...depending on how close you are to London), Africa is nearly completely void of any and all life, Australia is a land of all sorts of heavily mutated death monstrosities with the human inhabitants fiercely hanging on (though barely) to what little hope of living semi-decent lives they still have, and China is basically gone altogether. It has futuristic, modern, and past tech alike.

Great Chili Sector- This is the sector which we all reside it and as such is the primary sector we use. It has futuristic, modern, fantasy, and past tech. Futuristic tech however is the most common. There is also an alliance with the Blue Seas sector and there are teleporters created by TGC allies of the Blazeheart Pirates between the two Sectors, though said teleporters are between Blazeheart Pirates controlled islands. As such life in the two Sectors have blended together, especially around the coasts and islands of The Great Chili. This sector is home to the life energy aura.

Jurassic Sector- This is a sector based off of a mix of the "Jurassic Park" movie/video game franchise as well as the "Turok" video game from 2008. This sector is partially terraformed and inhabited by PMC's as well as, of course, various species of dinosaurs and other prehistoric creatures. The PMC's have mildly advanced technology as well as other tech specially designed to help them battle the native dinosaur species. Why they remain in such a hostile environment the world may never know...

Middle Earth Sector- This Sector is based off the popular novel/movie franchise, The Lord of The Rings. It is an alternate Earth of sorts with hobbits, orcs, humans, and much more. Technology is mostly past, though there are a few more fantasy and historical tech stuff that shines through the rest. If you need any more elaboration than that then just look it up...google. If you are on this site then you have access to google too. Use it.

Mystic Sector- One of the many Earth Sectors, the Mystic Sector is set in a modern world where the human body has no limits. Through training, a human can infinitely expand their abilities here. Manga, anime, and shows such as Hajime no Ippo, Kill la Kill, Durarara, and other such things where the body can do impossible things can all be found coexisting to a degree in this alternate world. Essentially, as long as you're from the Mystic Sector...it doesn't matter if you're only a "mere human". You could still kick some serious ass as long as you train right.

Narnia Sector- This sector is based off the popular book and movie series, "Chronicles of Narnia". It is so popular I don't think I need to explain it much. Basically it's fantasy...fantasy everywhere.

Nirn Sector- This sector is based off of the Elder Scrolls video game series. This is a fantasy game that takes place in more medieval setting with some technology ahead of it's time, such as functioning piston lock doors. This Sectors native life energy is magika. The Stormcloaks have won the Civil War, Harkon has been killed and Alduin is dead, though Imperial and vampire insurgents alike remain very active.

Poke Sector- This sector is based off of the Pokemon universe. I really don't feel I need to explain anything about this one since pretty much everyone should know this....unlike the other Sectors that are drawn from external sources, this one is a universal type of knowledge.

Roman Sector- This is an Alternate Earth. In this Sector, the Roman Empire never fell, and actually took over the entire Sector during a long conquest. This Sector is home to the Knights of the Holy Order, where their main headquarters is located, who naturally secured Rome's place as the eternal rulers of the Sector, however the Knights are very righteous. They are the reason Rome still rules, yes, but they are also the reason that Rome rules justly as well...for they are not servants of Rome. They are Servants of their God, namely Zaella, a Goddess of Virtue. If for any reason they deem the Roman rulers of the Sector as evil or unholy, they have full permission (and ability) to smite them all away...so this Sector is actually a very peaceful one, with next to nonexistent corruption rates in their Sector wide government.

Remnant Sector- This Sector is based off the Roosterteeth original series, RWBY. It has a variation of high fantasy tech, magical tech, advanced weaponry, so on and so forth.

Resident Sector- A Sector based on the rather popular franchise Resident Evil, this sector is plagued by a virus that makes infected zombie like creatures. This virus is known as the T-Virus and is highly contagious, able to travel through bodily fluids, water, and even air in some cases.

Shinobi Sector- This is a Sector based off the anime/manga series Naruto. Here the native life energy is chakra which can be manipulated in countless different ways by those skilled in it, called ninjas or shinobi. It has mostly past technology with some fantasy tech.

Skyworld Sector- It cannot truly be called a Sector as it is separate from the rest of Immensus, hidden away in the sky where many believe nothing can exist there. Floating islands and fantasy kingdoms rule this peaceful, isolated world, but both above and below lie horrifying Lovecraftian creatures that only get more terrifying the closer to the fabled "Flat Land" that is rumored to be below the clouds. Reaching this Sector is near impossible, and only a select few know of its existence and know the way to this lovely world.

Stigma Sector- This Sector is yet another one based off an anime series, Kaze No Stigma. In this Sector there are three types of magic (wind, earth, fire) and normal members of society do not know of its existence. Within this Sector the use of magic tends to pass down family lines to the extent that there are entire family lines of all fire users, all earth users, and all wind users. Magic is not known to the general public however, as only those who come from a family of magic users know about magic. A child born with the inability to use their family magic is often times shunned. It has modern technology.

Tamriel Sector- This Sector is based exclusively off Tamriel, namely Skyrim and the other home nations the various races one can play as hail from. In this Sector however everything is far more powerful than in their original counterparts, meaning that while in the Original Skyrim one could openly sprint at a dragon such is not the case here. Here, if one sees a dragon, you don't fight. You don't think. You only run. Run your ass off. Additionally, there are far more dragonborn in this Sector, having numbers estimated to be in the several dozen to low hundreds at least. The Civil War still rages with neither side gaining any real ground, and Alduin is essentially unstoppable no matter who you are (he's high S6, view my creatures factbook).

Titan Sector- Yet another alternate Earth based off an anime, to be more specific however it is based of the anime Attack on Titan. Here giant, humanoid creatures search the land to find their favorite and only prey: Humans. These creatures are several meters tall at the smallest and do not need to eat to live...they simply devour humans for pleasure and nothing more. Humanity lives in mysterious, massive layers of walls to protect themselves from these Titan's but sadly for the humans of this Sector these walls are not completely secure...just mostly.

Twisted Sector- A near future Earth that had been hit with an unknown source of power that has transformed much of the world's population into fantastic races and creatures both new and from humanity's myths and legends. The world has been split between five different factions: A new British empire rules most of Europe with machines and airships powered by steam with the return of the Victorian age. The Mediterranean, North Africa, and the near Middle East is ruled by the Blue Kingdom, which is the most accepting of the new races and rumored to be ruled by one of the three Dragon Lords. Australia had surprisingly risen up as a powerhouse in Oceania, ditching much of modern technology as the hardy people grew even stronger, now riding conquered aberrations into battle. A new Japan has also risen and is ruled by augmentations and a new Cyberpunk culture. The rest of the world is relatively abandoned to the new monsters that terrorize the world, and all of North America has become a wasteland after a Dragon Lord destroyed every vestige of the United States. A side effect of the transformations is Twisted Will, a form of life force that allows the Twisted to change their world in near limitless ways.

Underworld Sector- This sector is again an alternate Earth based off of the movie series "Underworld". In this sector werewolves and vampires are a common thing, though werewolves are constantly pushed towards near extinction by both vampire and human suppressors. This sector knows of vampires and werewolves and even has a military police, the Infected Persons Unit (IPU) that actively tracks down and exterminates said people who hide among the humans. This sector has modern technology and limited fantasy tech.

Yokai Sector- Another Sector based off an anime/manga, this one stems from Rosario and Vampire. It is an alternate Earth with modern technology and fantasy tech. Not to mention various types of powerful monsters. The native life energy is known as Yokai which can be converted by monsters of the Sector directly into raw physical abilities, however humans do not have a high enough concentration of Yokai to utilize it.

Zombieland Sector- This is yet another alternate Earth, based off the 2009 movie titled "Zombieland". Hence the name, this sector is plagued by zombies. The Sector is under strict quarantine, with no one allowed to leave and visitors are highly discouraged. If you enter, you are not allowed to leave...that is unless you manage to slip out past the military blockades around the Sector. Technology of this sector is modern.