An organization called the Anomaly Foundation, where they are an organization that records and collects all information about the anomalous world.
The anomalous world can be accessed when someone experiences a glitch, causing them to be transported to a room resembling a labyrinth, where an anomaly resides. These anomalies are divided into several levels or classes that describe their nature.
The first class is the Easy Class, where these anomalies are easy to avoid or capture. The next level is the Normal Class, where entities in this class are still relatively easy to handle but are more aggressive and will attack anyone if they feel threatened or disturbed. Typically, entities in this class have unique habits or behaviors, unlike Easy Class entities, which lack distinct characteristics and only differ in appearance.
The third class is the Hard Class, where anomalies or entities are highly aggressive and will attack anyone indiscriminately, even their own kind. They require special handling to capture or study, as they possess more complex traits compared to the previous classes.
The fourth class is the Extreme Class, where anomalies or entities are extremely dangerous and far more intelligent than those in previous levels. When they pursue or intend to kill, they will not let go of their target. Stopping them usually requires specific criteria or something that can halt their pursuit, and each entity has a different method of being stopped.
The anomalous world is boundless, or infinite. Even Level 0 alone consists of an infinite space with no end or boundaries. Those trapped within must find a way to the next level, but the path is not as simple as a labyrinth where the next path is static. Instead, the path to the next level constantly shifts, and every room changes every minute and hour.
Each level has varying degrees of difficulty, and survivors must rely on the supplies available in the rooms to survive. They are pursued by various anomalies or entities present in each level.
Each level is divided into different difficulty tiers. The first is Peaceful or Calm, where rooms or levels are typically inhabited by Easy Class entities. These entities are not easily angered and do not attack without reason. They usually remain in one area or wander aimlessly. Levels with a Peaceful difficulty often have unlimited resources, including various types of food. Examples of Peaceful levels include Level 0 (Lobby), Level 10 (Mall), Level 20, Level 30, and so on, in multiples of 10.
Anomalies or entities are usually named with an "A" to indicate they are anomalies, followed by a number representing their order, and ending with their class. For example, A001E refers to Anomaly or Entity number 1, classified as Easy Class.
The Level Space is the name of the infinite room, but there is a place even more terrifying than the Level Space. Here, entities or anomalies can speak and think like humans, representing a deeper and more specific category.
The Survival Zone is a level where entities or anomalies become active and can attack and kill survivors exploring the area. Agents from the Anomaly Foundation have placed warnings for survivors who accidentally enter due to a glitch. These agents are tasked with monitoring and protecting the anomalies to prevent them from killing unsuspecting survivors. In addition to agents, there are also scientists from the Anomaly Foundation.
The Death Zone is a level where Hard and Extreme Class anomalies or entities can appear. Even agents from the Anomaly Foundation hesitate to enter this level, but they have specialized agents who operate there.
The organization investigating the contents of the anomalous world is not the only one. There are multiple organizations studying, capturing, and experimenting with these anomalies, each with different goals. Some research and experiment to manage or contain the anomalies, ensuring they do not escape their world and keeping the existence of the anomalous world a secret.
Others aim to capture and study them to create weapons of mass destruction and dominate the world. There are also those who seek to destroy the anomalous world to prevent it from threatening humanity.
These organizations include the Anomaly Foundation, the World Government, and Human Guards, each with different visions and missions, pursued through various methods.