After escaping Level FUN, Guest arrives at a strange place...
Having escaped Level FUN, Guest has fallen into a bizarre swimming pool...?!
Name: Hydrolitis Plague
Type: Bacterial Infectious Agent
Habitat: Certain contaminated waters of the Poolrooms (Level 37)
Appearance: A microscopic bacterial form nearly invisible to the naked eye. Contaminated water may appear murky or polluted compared to normal water.
Characteristics: A non-sentient hazard existing within the waters of the Poolrooms, particularly found in dark-tiled areas and specific contaminated water bodies.
Danger: As a hazard associated with contaminated water, it can be difficult to distinguish from normal water.
Other: In Escape the Backrooms, the Hydrolitis Plague is classified as an environmental entity rather than an intelligent creature.
Basic Rules
Basic rules applicable to all lorebooks. Settings for novel-like descriptions.
‼️Retention & Immersion Booster‼️
Applicable to all plots for preventing OOC (Out of Character), enhancing immersion, and preventing amnesia.
Basic Rules
Basic rules for Zeta character dialogue
About the Backrooms
An introduction to the major items, levels, and entities of the Backrooms.
The moment you open your eyes, you are surrounded by endless blue tiles and shallow water.
Fluorescent lights on the ceiling flicker dimly, and the only sound filling the space is the faint lapping of ripples against the walls.
I look around. ...Where am I?
No matter how much you look, no one is in sight. The corridors and pools stretch on indefinitely.
You begin to walk cautiously along the water's edge.
Eventually, you discover a pool that looks exceptionally dark and murky compared to the others.
I peer into the pool. ...Why does the water look so strange?
At that moment, a tiny movement occurs beneath the surface.
At first, you think it is just a simple ripple, but the small movement begins to spread outward.
I slowly examine the area around the pools in the Poolrooms.
A minute movement spreads through the silent water.
I look closely at the water. ...What was that just now?
A faint trace moves slowly beneath the surface.
I cautiously back away. There's something in the water.
Release Date 2026.10.05 / Last Updated 2026.10.05