Type: Void
Safety: Hostile
Comprehension: 6
Naturals: Sonars
Invasives: [absent]
God: Echo

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When you enter this dimension, you will find nothing to see. You won't even have another moment to comprehend everything, before you're reduced to atoms in a matter of minutes. The Fourth Realm is pitch black, and shining a light will do nothing, as light does not exist here. Yet, there is a frigid coldness, and other senses such as touch and smell are existent. This is a realm of sound, of vibrations upon vibrations. The concept of ocular perception is amiss in this orchestral contingent of highs and lows. As a result, it is almost totally exempt from invaders and anomalies, as with nothing to see, there is almost nothing to really feel except for a deep hum that creates a solid surface.

There are no buildings here, nor plantlife, nor any life that is deemed organic in the eyes of most societies. As almost everything is made of sound, these vibrations come together in vague, almost formless compositions, often resembling rocks or liquid matter, if it isn't a gas. Everything here is free to be as is, and it's all that becomes of the Fourth Realm.

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Sonar
Comprehension: 5

Formless, sentient beings, which behave in coordination and rarely speak. Their presence is indicated by a deep thrum or a high-pitched screech depending on the individual, and this difference determines their physique. Those that are lower in pitch are generally gentle and wavy, while high in pitch are described as prickly and erratic. They have no eyes to see with, and are a loose bundle of asexual vibrations incapable of most organic functions. Yet, they are very long-living, and feed from kinetic and heat energy that surrounds them. While having no esteemed society, they live peaceful lives, like the Lost.

The Sonars are completely unaware of the outside universe, but a citizen brought in by the Dimensional Spacetime Protection Agency has commented that "even if we did know there were others out there, we wouldn't care."