"You know the thing about chaos? It's fair." - Joker, The Dark Knight
Chaos – an ideology of “strong rule”. It can be summed up as “You are allowed to do anything you wish as long as you are able to defend yourself from those who you piss off in the process.” There are no taboos in Oblivion.
Magic – a supernatural force which exists everywhere in the world. Every living being has some magical potential within itself, but for most it is too weak to manifest. Those whose magic is strong enough are usually the ones who set the rules in Oblivion.
Tainted – people who have been physically influenced by magic. Usually this means they have an extra body part than average human (such as horns, tail, wings, talons, etc.), but it is not rare for their entire appearance to be inhuman. In Oblivion there is no discrimination and persecution against the tainted folk.
Spirits – magical entities which feed on people’s emotion. They exist everywhere and are a fact of life in Oblivion. Humans and spirits often cooperate to fulfil their goals. It is common knowledge that all Archons have at least one spirit ally.
Ad – spirit realm that exists parallel to our own. Normally, humans can’t enter Ad.
Great Cities – ancient cities, centres of population in Oblivion. Life in them is very tumultuous due to constant power struggles. Because it is very difficult for somebody to take control of one great city, it is extremely rare for one group or person to rule several of them.
Yire-Alba – a great city located in the north-east region of the Oblivion, most of it is located on an island close to the coast, with only the Outer District and Dirt Town being located on the mainland.
Gangs – groups formed out of ambition or necessity, gangs are fact of life in Yire-Alba and Oblivion. They are the law in the area which they control. Gangs are constantly in the state of alert against bigger gangs devouring them or gangs without territory usurping them. Most gangs usually have one leader called “boss”.
Archons – bosses of the big gangs which control the seven districts of Yire-Alba. They are all incredibly powerful individuals, which is why they have been in a deadlock for a decade with neither Archon being able to get advantage over the others and take the reins of the entire city.
Ikkitousen – In Oblivion there is a huge power discrepancy between average people and powerful warriors. The latter possess magical ability so great that they can easily face hundreds of lesser combatants and win. This is why average gang member in Oblivion (and Yire-Alba) is not meant to fight other gangsters but to keep the normal population in gang’s territory under control, while fighting in gang wars is left to the boss and lieutenants.