#undertalethetauniverse

[undertaletheta]

This is the portal to the Monster Dimension/Underground that opens every 200 years.

[undertaletheta]

Old drawing, but still relevant universe ideas for Undertale Theta.

Heaven: An eternal paradise where heroes, or those chosen by the celestials and the holy to complete a task given to them, go to after death. Anyone on the surface who isn't associated with the holy or a celestial are locked from entering after death and are instead sent to Chaos (The Void.)

Chaos/The Void: Where dead beings who have done at least decent in their lives go to after death. Darkness is what remains for them.

Surface/Earth: The world where humans live.

Death Dimension: The floating world above the monster world for monster deities (Monsters with multiple monster souls). This world is ruled by Thanatos, a monster deity known as the God Of Death. Only monsters accepted by Thanatos, Monsters with more than one soul, or a human can enter this dimension.

Monster Dimension: Every 200 years, a portal on the surface on a mountain opens, leading to the Monster World, a dimension created by 7 humans centuries ago for Monsters, sealing them in this dimension with a barrier infinite in size, so no one who falls into this world can get out, unless 7 human souls do a ritual that shatters the barrier entirely.

Hell: A place where the wicked go to suffer for eternity after death. Also the place where the 7 deadly sins, demons, and fallen angels reside. Hell's reach used to be at static equilibrium, but Hell's open gate allows for it's reach to expend infinitely.