世界観
巨大都市’s lore centers on the fallen royal line behind the player character and the strange civilizations, faiths, and ancient powers that surround the new settlement. The world is full of old ruins, forgotten rulers, hidden identities, and cultures still shaped by gods, orders, and lost empires.
The Leader and the fall of 都市の建設
The player character, the Leader, is the heroine of the story and the avatar of the player. She was originally a princess of a rebuilt 都市の建設 from the previous era, but an opposing force overthrew the country and forced her to flee. After escaping with a surviving retainer, she reached an unexplored part of the world and decided to reclaim her former glory by building a new nation.
Her royal status is concealed. Even citizens do not know her previous identity, despite the tiara or crown she wears for design clarity. The old retainers also did not realize that the royal line of the fallen country had survived.
The story follows a sequence of collapse and renewal: the old 都市の建設 fell, a new 都市の建設 was founded in the previous game, that state later weakened from internal dissatisfaction and fell again, and 巨大都市 begins after that downfall.
Hidden royalty and the shape of the kingdom
The Leader’s appearance can be changed later in the 
Several royal symbols and relics underline this hidden line of succession:
- item_item_db_2000 is a royal ring passed down through generations.
- building_build_db_monument honors the nation’s founding day and proclaims loyalty to the Queen.
- building_build_db_flagpole displays the kingdom’s symbol with pride.
- building_build_db_monumenttop_noble marks the moment when a mysterious figure tells the Leader to achieve “a true utopia.”
Major faiths and their holy structures
Religion is a major force in 巨大都市’s world, shaping city life, devotion, and even architecture. Different orders gather around distinct symbols, rituals, and sacred buildings.
Purgon Order
The Purgon Order worships the sun god Nuganga. Its structures convert visitors, strengthen devotion, and support purification rituals.
Key Purgon-related buildings and items include:
- building_build_db_temple: a temple dedicated to the sun god Nuganga that converts visitors into followers of the Purgon Order.
- building_build_db_chapel: a place where followers gather at set times to pray; a small idol is enshrined inside.
- building_build_db_purificatesanctuary: a place where bodies and minds are purified through Purity 葉, with frequent exposure increasing devotion.
- building_build_db_almshouse: guides lost Purgon followers back to the city and turns their losses into usefulness.
- building_build_db_alter: an altar where devout followers may be sacrificed to save others within the order.
- item_item_db_2009: the mask symbol of the Purgon Order.
- item_item_db_2010: the hood used by the high ranks of the Umbran Circle is not Purgon-related, but it appears in the same broader religious landscape.
- item_res_db_purifyingstone: a difficult-to-make stone used widely by the Purging Order.
- item_res_db_purifyinggrass: a beautiful flower with purifying power used in many ways by the order.
- item_res_db_talisman: a relic made by the Purgon Order said to strengthen the wearer’s body.
- item_res_db_dreamcatcher: a peculiar ornament made by the Purgon Order said to block bad dreams.
- plant_plant_db_purifyingplant: the noble
Purgon iconography also includes:
- building_build_db_sunqueenchair: a luxuriously crafted Holy Throne of the Purgon Order, made for true supporters.
- building_build_db_spiritrestingplace: a sanctuary where purified guardian souls rest before protecting the city again.
Umbran Circle
The Umbran Circle spreads through shadow, ceremony, and inspiration. Its members are drawn in gradually, often without realizing it.
Notable Umbran-related structures and relics:
- building_build_db_darksanctum: spreads the Umbran Circle, causing Ratizens to become devotees one by one.
- building_build_db_darknessacademy: a sacred structure for nurturing guardians of darkness; rats trained in shadows gain varied abilities.
- building_build_db_mystictheater: a place of joy for true followers of the Umbran Circle, where magical puppet shows provide inspiration.
- building_build_db_darkqueenchair: a luxuriously crafted Holy Throne of the Umbran Circle for true supporters.
- item_item_db_2010: a hood used by the high ranks of the Umbran Circle.
- building_build_db_fountainumbran: an extravagant fountain whose construction is mysterious.
- building_build_db_enjoyingden: a shadowy place associated with great joy, though its depths remain unexplained.
Other faith-centered structures
A number of additional buildings reflect other spiritual traditions and ritual practice:
- building_build_db_shamancave: an artificial cavern that casts spells on nearby Ratizens and enhances ritual effects.
- building_build_db_shamanictree: a mystical tree that guides wandering souls and amplifies souls generated nearby.
- building_build_db_soulforge: a workshop for creating ritual tools; the tools themselves are said to be imbued with rituals.
- building_build_db_soulmirror: a mirror that can contain souls; upon death, the body is transported to where the soul resides.
- building_build_db_spiritrestingplace: a sanctuary made for purified souls.
- building_build_db_sanctifyingpillar: a stone pillar that restrains enemies with spiritual power; destroying it summons an angry spirit.
- building_build_db_magi ciantable: a starting point for studying the Umbran Circle and the Purgon Order.
- building_build_db_christmastree: a symbol of peace, love, and hope for happiness for all.
Sacred beasts, totems, and ritual power
Totems and sacred animal shrines show how 巨大都市’s religions and traditions channel power through symbolic creatures.
Totem shrines include:
- building_build_db_totem_rat
- building_build_db_totem_monkey
- building_build_db_totem_dragon
- building_build_db_totem_horse
- building_build_db_totem_sheep
- building_build_db_totem_snake
- building_build_db_totem_tiger
- building_build_db_totem_dog
- building_build_db_totem_rabbit
- building_build_db_totem_cow
- building_build_db_totem_chicken
These shrines are described as sanctuaries dedicated to sacred animals, where their power allows skills to be used.
Old kingdoms, ancient rulers, and the weasel legacy
The world beyond 巨大都市 is shaped by ancient peoples who once ruled vast lands. The most prominent are the weasels, whose old kings, guards, and burial sites remain important landmarks of the world’s history.
The Weasel Pharaoh and his court
The weasel_pharaoh is the great former king of the weasels who once ruled the world. He is now a dried-up mummy, but still holds immense power.
His associated figures include:
- creature_enemy_weasel_priestmummy: a priest who once served the old king and still retains healing power.
- creature_enemy_weasel_atkmummy: a soldier who served the old king and remains powerful.
- creature_enemy_weasel_atkmummy2: a royal guard of the old king who still serves in death.
- creature_enemy_weasel_basicmummy: a servant whose will to serve remains.
- creature_enemy_weasel_beastmummy: an old weasel that has become half beast and runs on four legs.
- creature_enemy_weasel_magician: a weasel who heals nearby allies with ancient magic.
Royal weasel sites include:
- building_build_db_weaselkinggrave: an ancient tomb built by old weasels.
- building_build_db_weaselkinggrave2: the treasure vault of a great ancient king, where stored money increases slightly each day.
- building_build_db_weaselmonument: a symbol of peace representing victory; weasels are no longer the arch nemesis.
- building_build_db_weaseltemple: a crude palace built by weasels, with unknown danger inside.
Weasel construction and infrastructure are also grim and pragmatic:
- building_build_db_weaselroad: a crude block made by weasels from their prey’s hard bones.
- building_build_db_weaselladder: crude ladders made from the bones and hides of prey.
- building_build_db_weaselroadwallpaper: wallpaper made from polished bones.
- building_build_db_boneroad: a wall of interwoven bones with sharp edges.
- landmark_mapobj_db_weaseltable: a table that weasels use to eat.
- landmark_mapobj_db_weaseltable: a reminder that weasels have at least one civilized side.
Other ancient peoples and enemies
The wider world is filled with other dangerous or mysterious forces.
- creature_enemy_lizard_elite: a powerful lord who commands the lizards and appears when their settlement is in crisis.
- creature_enemy_lizard_assassin: a lizard disguised as a rat, stealing food or starting fires.
- creature_enemy_zombie: a Plague Rat infected long ago, endlessly wandering and possibly still intelligent.
- creature_enemy_pigy: a horrifying monster lurking in a forgotten mine.
- creature_enemy_overlord: a tunneling creature that clears paths for Plague Rats so no route remains closed.
- creature_enemy_ratfiend: a strange creature that emerges from the lava and eventually decays on its own.
- creature_enemy_funnymon: a dangerous creature that imitates a おもしろ花, or may actually be one.
- creature_enemy_weasel_pharaoh and his retinue remain among the most important ancient antagonists.
Creatures, animals, and the underground ecosystem
The underground is inhabited by many strange lifeforms, from useful animals to unsettling monsters.
Deep underground fauna
- creature_animal_flaone: a mysterious and cute creature living deep underground; touching it can cause endless burning.
- creature_animal_bat: a minion of the night sky, sometimes said to have secret power.
- item_res_db_batjuice: liquid gained from bats that may help obtain their characteristics.
- item_res_db_bat: the minions of darkness, possibly able to roam in darkness.
- creature_animal_scorpion: a silent assassin hiding in desert sands.
- item_res_db_scorpion: the same silent desert killer in resource form.
- landmark_mapobj_db_scorpionhole: a deep hole dug by scorpions, full of eerie silence.
- creature_animal_minespider: a trained trap hunter that webs and binds prey.
- creature_animal_spiderbaby: a newly hatched giant spider hatchling already the size of an adult spider.
- creature_animal_jewelscarab: a beetle with a crystallized back plate, hard as crystal.
- creature_animal_featherscarab: a scarab that loves Purifying Lilies and is not fragile at all.
- creature_animal_fallscarab: a terrifying insect that gnaws through everything.
- creature_animal_pharaohscarab: a beetle with shimmering colors.
- item_res_db_goldscarab: an ancient treasure of incalculable value that emits its own light.
- item_res_db_cactusflower: a giant flower from a giant cactus said to have special power.
- plant_plant_db_cactusplant: a spiny cactus that produces large, beautiful flowers after waiting.
- plant_plant_db_funnyflowerplant: a flower that makes people laugh just by looking at it, and is rumored to eat meat.
- plant_plant_db_funn yflowerplant: the same strange laughing flower appears in multiple records.
- plant_plant_db_lightgrassplant: a glowing underwater grass-like flower that is useful despite unknown mechanics.
- plant_plant_db_seaweedplant: a clingy underwater plant, like grass beneath the sea.
- plant_plant_db_seaanemoneplant: a miraculous creature that spouts water periodically.
- plant_plant_db_coraltreeplant: a stony underwater organism that can shine like a jewel when ground and cut.
- plant_plant_db_jeweltreeplant: a petrified tree with crystals, source of the brightest crystals.
- plant_plant_db_ashtreeplant: an ash-like tree in volcanic regions, actually made of ash.
- plant_plant_db_papyrusplant: a plant that grows in wet places near water, once used to make paper by the ancients.
- plant_plant_db_jungletreeplant: a tangled-stem tree in jungle regions that is both flexible and elastic.
- plant_plant_db_purifyingplant: the noble
- plant_plant_db_funnyflowerplant: a carnivorous-looking joke flower.
- plant_plant_db_cactusplant: a thorny plant that rewards patience with a wonder.
Other underground animals and oddities
- creature_animal_snail: a gentle animal with a little house, slow but not dangerous.
- landmark_mapobj_db_snailhole: a burrow for slow and diligent snails, famous for snail races.
- creature_animal_frog: a tiny hopping frog that seems harmless, but no one knows what happens if you touch it.
- landmark_mapobj_db_froghole: a hiding place for frogs.
- creature_animal_armadillo: a hard-shelled animal that rolls when threatened.
- landmark_mapobj_db_armadillohole: a sandy burrow where armadillos live and roll.
- creature_animal_monkfish: an aggressive aquatic fish; if you see a light in the depths, run.
- landmark_mapobj_db_monkfishhole: a rough hideout for monkfish that hate being touched.
- creature_animal_bee: a hovering animal of great diligence; only bees produce honey and wax.
- creature_animal_frog and other small creatures make the underground feel alive rather than empty.
Plants, materials, and strange resources
巨大都市’s lore is reinforced by the materials the world produces. Many resources are not just crafting inputs but hints about history, myth, or ecology.
Purification and devotion
- item_res_db_purifyinggrass: a beautiful flower with purifying power.
- item_res_db_purifyingstone: a special stone with purifying power.
- item_res_db_dreamcatcher: a Purgon-made ornament that wards off bad dreams.
- item_res_db_talisman: a Purgon-made relic that strengthens the body.
- item_res_db_purifyingstone and item_res_db_purifyinggrass are central to purification practices.
Ritual and occult materials
- item_res_db_soulstone: a purple jewel full of unknown power and used as a medium in sorcery.
- item_res_db_grimoire: a grimoire containing powerful spells that is dangerous in untrained hands.
- item_item_db_13: the mysterious staff used by the Pharaoh, now almost powerless and usable only as a blunt weapon.
- item_item_db_17: a long nail used for rituals that absorbs the enemy’s health through mystic power.
- item_item_db_18: a staff made with mysterious dark power that converts intelligence into strength.
- item_item_db_16: a sword with a power that disturbs peace.
- item_item_db_2006: a mysterious golden mask that makes those who encounter it yield what they must.
- item_item_db_2007: a legendary plant used to treat the wounded.
- item_item_db_2009 and item_item_db_2010: sacred clothing and headwear tied to the Purgon and Umbran faiths.
Plants of the world
- plant_plant_db_ashtreeplant: an ash-made tree of volcanic regions.
- plant_plant_db_papyrusplant: a wetland plant once used for paper.
- plant_plant_db_cactusplant and item_res_db_cactusflower: the cactus and its special flower.
- plant_plant_db_funnyflowerplant: a smiling flower rumored to be carnivorous.
- plant_plant_db_lightgrassplant: glowing underwater flora with unclear origin but clear usefulness.
- plant_plant_db_seaweedplant: a simple underwater plant.
- plant_plant_db_coraltreeplant and plant_plant_db_jeweltreeplant: petrified lifeforms that can yield bright, jewel-like materials.
- plant_plant_db_purifyingplant: the
- plant_plant_db_jungletreeplant: a flexible, elastic jungle tree.
- plant_plant_db_funn yflowerplant and other strange flora fill the subterranean world with unusual symbolism.
Everyday resources with hidden meaning
- item_res_db_ash: the residue left after something has burned, still warm.
- item_res_db_infernite: a half-solid, half-liquid mass that looks as if a giant beast vomited it up.
- item_res_db_nocslin: a green liquid with restorative power that can be helpful or dangerous depending on use.
- item_res_db_cosmetics: a smooth cosmetic that improves skin and promises long youth through endless skincare.
- item_res_db_myrrh: a fragrant resin extracted from desert trees with distinctive scent and effects.
- item_res_db_bone medal: sharp bone fragments from enemies, regarded in some places as a symbol of strength.
- item_res_db_gbot: a robot made to take over hard labor, leaving open whether it assists Ratizens or replaces them.
- item_res_db_batjuice: a bat extract produced without harming bats.
Places, ruins, and landmarks
The world’s geography carries its own history.
- building_build_db_scarabdungeon: ancient ruins where treasures are said to be sleeping, with heavy insect wing beats carried by the wind.
- landmark_mapobj_db_hermitcrabhole: a hiding place for hermit crabs, who still need a place to hide despite carrying their homes.
- landmark_mapobj_db_pharaohjar: an ancient jar containing burial goods.
- building_build_db_cemetery: a burial place for dead Ratizens that inspires reverence.
- building_build_db_weaselkinggrave and building_build_db_weaselkinggrave2: royal sites tied to the old weasel king and his treasure.
- building_build_db_monument: a national monument commemorating the city’s founding.
- building_build_db_expeditioncenter: an institution dedicated to exploring the surrounding world and asking what lies beyond the city.
- building_build_db_diplomaticoffice: used to interact with discovered cities, reflecting a world without eternal enemies or allies.
- building_build_db_groupstone: a plate for carving Ratizens’ names, letting those recorded be separated into groups.
Themes that run through the world
巨大都市’s lore consistently returns to a few ideas:
- Hidden identity: the rightful leader is alive, but concealed.
- Lost empires: fallen Ratropolises, ancient weasel kingdoms, and buried ruins shape the present.
- Faith as power: Purgon and Umbran buildings show that belief changes behavior and city life.
- Nature as mystery: underground animals, plants, and strange resources are all part of the world’s history.
- Death that does not end service: mummies, spirits, and preserved souls continue to guard old loyalties.
Together, these elements frame 巨大都市 as a city built on memory, reclamation, and the hope that a new kingdom can rise where old ones failed.