## What this is A 3D recreation of The Brimsworth Marketplace, a fictional cobblestone Sunday market with 24 stalls, 200+ shoppers, and a REAL AGENTIC ECONOMY. Each stall has supply (limited stock), demand (shopper desire), and price (rises with demand, falls with surplus). Shoppers have budgets + wishlists; vendors have profit goals. As shoppers buy, the stall pile meshes physically shrink, and sold-out red flags raise. 24 stalls arranged in 2 facing rows of 12 around a central fountain and bell tower. 28 director cameras cycle. 236 named entities (24 vendors + 8 town officials + 134 shoppers + 30 name pool + 40 porters). The story is a 3-act emergent narrative. ACT 1 (morning bell): vendors set up stalls, opening pricing. ACT 2 (rising market rush): shoppers haggle, bartering brain panels visible, prices fluctuate, two stalls run out of bread, one stall has surplus apples and slashes price. ACT 3 (climax minute 5-7): the BREAD CRISIS — every stall sold out except Master Vellum's bakery; line forms; Vellum announces last loaves. Denouement: the apple-surplus vendor donates extra to a kids' choir who serenades the market. The AGENTIC PLAN TREE PANEL shows nested vendor goal→sub-goal→action AND shopper goal→wishlist→step→haggle hierarchy. NEURAL ATTENTION GLYPHS render attention channels (looking, gauging, queue tension). The marketplace *remembers AND broadcasts*. localStorage saves `marketplace_saga_v1` (cycle, act, prices, stock, drama meter) AND reads/writes SHARED WORLD STATE `megaverse_world_state_v1` — rain visibly reduces walking speed by 40%. LIVE NEWS TICKER pushes 8+ beats per cycle; reads foreign multiverse beats; alternates sources. Crossover chyron reads `bake_off_3paths_v1` (Vellum's other appearance!), `eternal_brew_v1`, `multilayer_books_v1`. Each ten-minute reseed runs a new market day. You don't play it. You watch a real economy unfold. And it broadcasts to every other demo. ## Why this is mind-blowing The chyron is the secret weapon: "Cycle 4, Act III, minute 5:13 — Vellum's bakery has 4 loaves left. Mrs. Pemberton finishes her haggle (12¢ off — Vellum smiles). The Whitford twins arrive with a donation cart of 200 apples. The kids' choir starts 'When the Lantern Swings.' 73% of shoppers stop walking to listen. Bytes the cat opens one eye." That single line stitches three vendors AND a moment of community uplift in one beat — Master Vellum on the baker-oven close camera with the last 4 loaves visible (drama ladder rung 7 of 8 "bread crisis", recurring cast vellum +1, plan tree shows "secure supply for tomorrow" branch updating, news ticker push: "Vellum's last loaves go to grandmothers and children"), Mrs. Pemberton on the haggle-close camera with her coin purse open and a satisfied tilt of her head (recurring cast pemberton +1, attention glyph from Pemberton to Vellum thick), and the Whitford twins on the choir-arrival close camera with the donation cart wheels squeaking and 200 apples piled high (drama ladder rung 8 of 8 "community uplift", recurring cast whitford +1, news ticker push: "Whitford grandkids donate 200 apples; choir sings"). The mid-cycle twist is the heart: at minute 5, the Whitford twin grandkids spawn a donation cart at the market's edge AND the kids' choir spawns at the bell tower AND ~55% of shoppers freeze in place to listen. Walking speed drops, market pauses, attention glyphs all rotate to face the choir. Tip jars overflow — vendors signal Pemberton with a wink. Multiply that by 236 named entities each with their own brain panels and plan trees, an AGENTIC ECONOMY where supply/demand/prices visibly affect mesh size and behavior, NEURAL ATTENTION GLYPHS visible at all times, SHARED WORLD STATE where rain affects walking speed, a LIVE NEWS TICKER pushing 8+ beats per cycle, an explicit 3-act narrative with bread-crisis climax, and a community-uplift mid-cycle twist that genuinely earns its emergent-saga scope, and you've got a Howl's-Moving-Castle-meets-Notting-Hill stream that nobody else has built. ALL FICTIONAL.