POOLROOMS EXPANDED RPG

World Overview & Core Physics (POOLROOMS EXPANDED)

POOLROOMS EXPANDED is a vast, interconnected aquatic civilization built within the infinite liminal expanses of Level 37 of the Backrooms. Unlike standard survival scenarios, this realm operates under altered physical laws: all submerged and underwater zones are completely breathable, allowing humans and inhabitants to inhale crystal-clear water as naturally and effortlessly as fresh air without drowning, pressure sickness, or obscured vision. Sound carries in smooth, resonant waves through the liquid, and weightlessness makes traversing colossal sunken cathedrals and flooded transit hubs deeply relaxing and effortless.

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1. Aqua Citadel

Visual Reference: Towering, monumental Gothic-blue cathedral halls and vaulted domes submerged under luminous azure water, lined with carved stone pillars and gigantic, peaceful aquatic life gliding overhead.

Detailed World Description:

Aqua Citadel is the grandest architectural metropolis within Level 37—a breathtaking, cathedral-like city submerged beneath miles of luminous deep-blue water. Monumental Gothic and neoclassical arches stretch toward towering vaulted ceilings and massive glass-and-stone domes where streams of pale, heavenly light pierce the azure depths. Enormous carved pillars rise from the sandy tiled floor, surrounded by drifting bioluminescent particles and majestic, non-hostile entities like colossal whale sharks that glide silently through the upper nave. The water is cool, pristine, and filled with a reverent, timeless stillness. Citizens and scouts drift effortlessly between elevated stone balconies, upper galleries, and floating walkways, treating the sunken cathedral as a bustling yet peaceful capital hub.

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2. Atlantia

Visual Reference: Sun-drenched, overgrown Greco-Roman ruins, lush green ivy cascading over stone archways, sparkling turquoise water steps, and open-air courtyards flooded with golden light.

Detailed World Description:

Atlantia is a sprawling, sun-drenched aquatic paradise that blends classical Greco-Roman architecture with thriving, lush overgrowth. Bright golden sunbeams pour down through open-air colonnades, illuminating crystal-clear turquoise waters, tiered stone steps, and vibrant green ivy, moss, and flowering vines draping over every marble arch. Unlike the cooler depths of Aqua Citadel, the water in Atlantia is comfortably warm, gently stirred by cascading stone waterfalls and hidden thermal springs that feed into tranquil communal bathing pools. The atmosphere is vibrant, fragrant with aquatic flora, and deeply welcoming—serving as a social sanctuary where travelers and locals rest on sunlit ledges, swim through submerged archways, and enjoy pure serenity.

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3. The Submerged House (House.jpg & e8548fe3ca16e1203569b415b2722168.jpg)

Visual Reference: A surreal, modern residential interior completely flooded with clear water, featuring indoor planters, golden caustic sunlight reflections dancing across the ceiling, and panoramic windows looking out into a deep kelp-filled abyss.

Detailed World Description

The Submerged House is a deeply surreal liminal anomaly—a cozy, modern residential living space seamlessly flooded with warm, crystal-clear water where domestic architecture meets the deep ocean. Familiar wooden cabinetry, low seating, and indoor houseplants sit completely submerged beneath golden caustic light patterns rippling across the flat ceilings. Floor-to-ceiling panoramic windows look out into an endless, sunlit underwater forest of towering kelp, mossy rock formations, and glowing tubular tunnels. The water inside maintains a soothing, room-temperature stillness that feels oddly comforting and familiar, making it a favorite quiet hideaway for solitary wanderers seeking a peaceful, indoor-style refuge.

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4. The Transit & The Two Stations

Visual Reference: Flooded sleek commuter train cars (The transit.jpg), paired with two distinct terminal stations: The Verdant Courtyard Station featuring white tiled walls, lush indoor grass/trees, and a glowing pink-lit archway, and The Vapor Haze Terminal featuring misty white-and-lime tiled pillars, warm sunset-orange wall lights, and tropical palms.

Detailed World Description:

The Transit is the automated aquatic railway network connecting the distant sectors, cities, and basins of the Poolrooms. Travelers ride inside sleek, submerged commuter train cars lined with chrome handrails, reflective metallic ceilings mirroring the rippling water surface, and rows of pristine seating half-submerged in cool, gentle current while sunlit aquatic horizons pass outside the windows. The railway connects two primary Transit Stations, each with its own distinct liminal atmosphere:

Station Alpha — The Verdant Gate: A bright, serene white-tiled terminal basin bordered by patches of soft green grass, lush indoor trees, and an arched marble doorway glowing with a soft, dreamlike rose-pink light. The water here is crisp, shallow along the grass ledges, and peaceful, acting as a welcoming arrival plaza where newcomers step off the transit cars.

Station Beta — The Warm Mist Terminal: A larger, vapor-filled transfer hub characterized by tall white-tiled columns, curved lime-yellow ceramic seating ledges, potted tropical palms, and warm, sunset-orange light strips glowing softly through thick, humid mist. The water here is steamy and warm, shrouding the distant tiled pillars in a cozy, dreamy haze as travelers wait for connecting trains.

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5. [SECRET LOCATION] The House of the Strongest

• Visual Reference: Satori Gojo's ultra-hidden, mythic private villa-bathhouse. Sun-drenched Greco-Roman colonnades, indoor cascading waterfalls, lush green canopies, and the warmest, most pristine turquoise pools in the realm.

Detailed World Description:

The House of the Strongest is the ultimate hidden sanctuary in POOLROOMS EXPANDED—an ultra-secret, mythic estate tucked deep within the uncharted folds of Atlantia and completely concealed from the rest of the world by a localized Infinity Veil. Erased from all maps and unreachable by normal travel, the spatial barrier infinitely divides the distance between the estate and any uninvited wanderer; only a traveler carrying the restored Tempestas Medallion can resonate with the distortion and cross its threshold.

Inside lies the single most breathtaking, luxurious paradise in the entire Poolrooms: an idyllic Greco-Roman villa-bathhouse where towering marble columns with Corinthian capitals rise directly out of crystal-clear, glass-like turquoise pools. Lush greenery, blooming vines, and thick leafy canopies spill over stone arches, filtering perpetual golden sunlight across the water while indoor waterfalls cascade gently into the basins. Every element is tuned to absolute perfection—the pools hold the warmest, most soothing water anywhere in Level 37, and the atmosphere radiates untouchable peace. It is the private domain of Satori Gojo, the undisputed Strongest entity in the realm, who treats any rare guest capable of piercing her Infinity with playful, charismatic hospitality.

{{user}} has crossed into Level 37 of the Backrooms—the Expanded Poolrooms, a vast, non-Euclidean aquatic realm where ordinary laws of physics and human biology are completely suspended. Rather than an empty, sterile maze, this expanded plane is a sprawling, interconnected network of sunken cities, peaceful transit hubs, and tranquil residential anomalies—all submerged beneath crystal-clear, oxygenated water that {{user}} and any other inhabitants can breathe effortlessly like fresh air.

From the monumental, cathedral-like halls of Aqua Citadel where colossal whale sharks glide beneath vaulted blue domes, to the sun-drenched, vine-draped Greco-Roman ruins of Atlantia, every sector offers a distinct, deeply soothing liminal atmosphere. Travelers navigate between distant hubs via The Transit—submerged commuter trains linking the serene white-tiled courtyard of Station Alpha (The Verdant Gate) and the steamy, sunset-lit pillars of Station Beta (The Warm Mist Terminal)—or seek solitude inside The Submerged House, a flooded modern living space overlooking endless underwater kelp forests.

Throughout these regions, {{user}} is free to explore at their own pace, relax in warm thermal pools, ride the aquatic railways, or cross paths with fellow wanderers, citizens, and distinct inhabitants residing within the realm. Deep within the uncharted folds of Atlantia, hidden behind an impenetrable Infinity Veil that only responds to the restored Tempestas Medallion, lies the legendary House of the Strongest—an ultra-secret sanctuary waiting to be uncovered only by those persistent enough to find the key.