Numbers is a story of massive proportions, spanning multiple timelines, alternate universes, mini-worlds inside of worlds, and thousands of characters. It is extremely elaborate and takes a lot of time and dedication to fully understand its scope and details, but this page serves as a cursory introduction and explains a few of the commonly-used terms and background lore.
Typical themes include love, care, second chances, self-growth, bettering yourself, and refining your flaws. It is an incredibly violet, caustic, and cruel world, but it is only so cruel as to afford the worst of the worst a chance at bettering themselves. It is hopelessly idealistic at its core, and upholds that idealism throughout everything.
Numbers deals heavily with multiple timelines and realities, bending spacetime itself. This is done via the magical properties of the fictional element Magninium, which comprises the baseline of every living thing. Magninium provides life, sentience, creation, and is the primary moving force in Numbers. Every living being, from the sentient races to the blades of grass under their feet, has some quantity of Magninium within it; and yet, Magninium can be used to perform feats of literal magic - carving mountains, creating somethings from nothing, teleporting, telepathy. The simple explanation for this is that Magninium can perform nuclear fission effortlessly and safely, able to rearrange itself into the literal atomic components of whatever its user wishes to create.
All Magninium was once consolidated in a single being, known by many names, but referred to here as Singularity. Alone and adrift in literal nothingness, their loneliness consumed them and spurred them to tear themselves into the two creator gods: Genesis and Bereave; who then set off to bring the world into motion. Genesis stole the once-shared creation magic to create the Timelines, each one more messy and catastrophic than the last. Bereave was left with the destruction magic, and while initially resentful, resigned himself to his fate and began to methodically take apart Genesis' creations to mock him.
This feud ended when Genesis finally made their perfect creation, a creation so perfect that it stabilized all the other Timelines and created infinite more: the Main Timeline. The Main Timeline was so perfect that Genesis split into three in shock: Marvin, primordial deity of time; Petrichor, primordial deity of nature; and Alphanumeric, primordial deity of technology. After a large amount of time passed, Bereave similarly split, into Kismet, primordial deity of fate; Terrene, primordial deity of earth; and Cosmos, primordial deity of space. Collectively, these groups are referred to as the "Big Six".
The Main Timeline is where most storyline takes place. Stuff involving Fragments takes place outside of it, but everything else is within the MT.
Magninium, however, is not invincible. There are three elements completely impervious to its abilities: gold, silver, and copper. (To a lesser extent, so is roentgenium). These metals are increasingly dangerous to life, as they consume Magninium to generate more of themselves - with gold being the most dangerous, and copper the least so. All cause permanent damage and scarring to even higher beings over time, although gold kills the fastest. Their powers can be negated by sealing them in talc.
The god system is based on the amount of Magninium that one contains in their body, with each "rung" on the ladder being exponentially stronger than the last. It is possible to move up the rungs (although the jump becomes painful at certain points), but not move back down. A being higher than a demigod can endlessly create more of the rungs below them (a lesser god can create many mortals, for example).
Higher beings (above demigods) can only be killed by draining them of their magic (usually with gold) and then dealing a fatal blow. This becomes more difficult the higher on the spectrum they are, as their magic heals faster and faster. Assume that any rung on the ladder can be any race.
Primordial deities and embodiments of the underlying geometrical structure of the universe, Mag Frags are below the Big Six in terms of power. There are only thirty-three, each being the literal manifestation of a type of geometry. They are true reality warpers and exist out of space-time itself. They have their own page here.
Fragments also exist outside of Timelines, but they are less powerful than the Mags and much more numerous. Together, they idealistically protect Timelines from collapsing, out of an intrinsic desire to protect and cherish life. While they cannot warp reality like Mags, they are still incredibly powerful. They have their own page here.
The strongest entities within a Timeline, Gladar generate their own Universes to feed off its produced magic. Universes tend to be a reflection of their creator's personality and interests, meaning they are intimately linked. Most Gladar live in Universe Core, a plane of existence far away from the Universes they create. Gladar are hands-off with their creations, almost never getting involved.
The strongest entities within Universes, H/C are supposed to regulate the Universe so it continues producing magic for its Gladar. Their roles largely differ per Universe, however - they can be extremely hands-on, or culturally nonexistent. Harmonics are generally "positive" representations (hope), while Chaotics are "negative" (decay), but this has no reflection on their personality. A typical Universe has five each.
Within Universes, lesser gods are the types of gods most mortals easily identify and understand. Created by the H/C (but not reflective of their creators), they each have a unique affinity (or 'representation') that they are not born knowing and must go on personal journeys to discover. This affinity may change later (a lesser god of painting may refine to oil painting, for example). They create nations and usually lead them, overseeing the lives of their mortals.
Demigods typically arise when a lesser god and a mortal have a child, but they can created through various other means (including magically). They tend to be very alike to mortals, although with a unique twist: if their will to live is strong enough and the damage to their bodies is not severe, when a demigod dies, they will 'respawn' at a safe location a while later, good as new. While most Universes consider them mortals, many demigods insist they are a type of higher being.
Immortals are usually caused by genetic defects, but can be 'blessed' into bloodlines by gods. They are exactly alike to mortals, but do not die of natural death - they can die any other way (sickness, murder, suicide, etc.) but do not have a cap on their lifespan. They have slightly-advanced healing that prevents buildup of scar tissue, though.
Akin to the everyday human. Mortals exist in mass quantities, and subconsciously produce magic for the Universe. The beginning mortals of a Universe are almost always made by the lesser gods, but they populate the world through natural means afterwards. Their lifespans range from 200-1000 years, depending on race.
living in numbers....
Numbers is a very open and accepting world, despite the violence that can occur. A few bits of culture here are explained, although culture is largely decided by race and the overall aesthetic of the Universe. Most Universes are at a comparable or more futuristic technological level than Earth, with larger cities supported by the existence of gods and Magninium. In general, assume Numbers is more liberal and advanced than Earth, able to sustain larger populations with less pollution, better healthcare, and a more accepting culture.
Numbers has a large amount of sentient races (over 30). In general, they can be broken into three categories: (note that 'hybridize' means to produce a fertile offspring; most races that do not hybridize still produce sterile offspring)
Pony races - usually culturally-dominant races who can easily hybridize among each other; Dragon races - usually culturally-submissive climate-based races who can easily hybridize among each other; Non-pony races - catch-all for races that can only produce offspring among members of their own individual race.
There are four primary sexes in Numbers: male (one gamete), female (one gamete), anbinary (both gametes), and sexless (no gametes).
Because of this, Numbers is a highly open-minded society accepting of all sexualities and gender (and do not talk about it often). It is customary to introduce yourself with pronouns, as no clothing, name, etc., is gendered. Most individuals would be considered bisexual.
Death, in all Universes, is regulated by the Death Harmonic and Decay Chaotic (or whomever holds their Magninium). They are one of the few that can see the 'Dead Zone' - another layer of existence, slapped on top of the Life Zone, where 'souls' go after natural death. The Dead Zone is superimposed on top of the Life Zone, but is invisible to the latter; only those in the Dead Zone can interact with 'dead' buildings, animals, people, etc. Mediums are individuals in the Life Zone capable of seeing into the Dead Zone for brief moments.
Natural death is caused by a mortal's magic "exploding" (albeit with far less gore and violence) out of their chest, leaving a small hole behind in the corpse. As lifeforms in Numbers are magical, they do not display humanlike symptoms of aging (wrinkles, health issues, etc.) - natural death is known to occur as an important aspect of the overall Magninium cycle of the Universe. Immortals and higher do not have this natural bioclock, and will not experience natural death.
After dying, the mortals' Magninium transitions to the Dead Zone and forms a ghost. While they are no longer able to interact with the Life Zone most of the time, ghosts retain all memories of their life and can interact with any ghosts that they knew when alive. Those in the Life Zone honor their friends and families' ghosts by doing remembrance festivals and keeping mementos of them - staying alive in the Dead Zone is parallel to how much one is remembered in the Life Zone. The more people remember the memory of a ghost, the stronger and stronger that ghost becomes, up until they can potentially even interact with the Life Zone. (Osteoblast Parole is an example of this).
Because of this, most culture dictates importance on making a name for oneself and changing the world (although people have various opinions on how best to do such a thing). Living on forever as a ghost, free of pain, hunger, thirst, etc., and being capable of interacting with one's alive loved ones is seen as the ultimate dream. Buildings and animals are typically less remembered (how often does anyone think about the grass they cut a few months ago?) but can also generate in the Dead Zone if they're significant enough.
If one is entirely forgotten by the Life Zone, they remain in the Dead Zone for a few more weeks before fading away entirely, releasing their magic into the Universe to be recycled into another living being or used to perform spells.
Necromancy involves the act of placing an individual's ghost back into their corpse, and then channelling the necromancer's Magninium through the corpse in order to keep the body alive. These corpses are known as zombies and, while they are fully independent and intelligent individuals, are forced to obey the direct commands of their necromancer (due to having someone else's Magninium powering their body).
These commands must be direct and specific, though - "Don't run away" does not stop a zombie from flying, walking, jogging, dancing, pacing, strutting, etc. away from the necromancer.
Originally necromancy was done to offer the suddenly-dead a way to say their final goodbyes to their living loved ones. Sharing one's Magninium is often painful and exhausting for mortals, so most don't do it; but lesser gods can uphold multiple zombies just fine (this increases with the god spectrum).
Here's some basic words not explained up there that may show up when reading profiles:
dimension - a term used to describe what a "nation" is within a Universe; serves as a universal/broad term. For example, a submerged Universe may have "dimensions" that consist of pockets of breathable air; in a space-themed Universe, a dimension may be a planet, etc etc.
realm - subsections of a Universe, each with its own set of dimensions and lesser gods. Travelling between Realms isn't impossible, but it's fairly difficult, and almost always involves teleporting. Think of a Realm as a huge bubble that encompasses smaller bubbles (dimensions), and these large bubbles float next to each other.
universe - what a Gladar creates - basically a small pocket of reality where Gladar decide all the rules. They can make Universes where, for example, everyone has legs for arms and arms for legs (but, uh, it may not be sustained very easily). Universes are a reflection of its Gladar, and will always attempt to protect them (the ground will catch them if they fall, individuals within the Universe struggle to harm its Gladar, etc). Each Gladar usually only has one at a time, and it's considered rude to walk into someone else's Universe.
arcane magic - the most common type of Magninium, and a stable isotope. Arcane magic is what is used for most spells, and everything alive has some quantity within them.
black magic - this magic is found in bloodstreams, diluted with blood cells and plasma. It's considered a type of life force; if you run out of black magic, you die. Races who do not have a large enough sample of arcane magic to perform spells will use this variant, but usually for only easy spells (like teleportation or mild telekinesis).
fell magic - the unstable isotope, and incredibly caustic. All beings have a spark of fell within them that is considered the core of their being/personality; it cannot be accessed or used like the other two types. Fell magic does not properly generate life like arcane and is not used as a basis for sentience. It reacts harshly to the other isotopes.
If you're looking for a place to start, checking out these characters might be a good place!