What this is

A 3D mega-world recreation of Tokyo from 6pm to the last train. Seven sub-locations sit in one three.js scene: Shibuya Scramble Crossing, the JR Yamanote Station platform, Neon Alley, a Konbini with sliding doors, a Capsule Hotel with lit pods, a Karaoke Box, and a Ramen Yatai cart. Two hundred and twenty InstancedMesh pedestrians move with role-based AI — scramble walkers obey a real traffic light, platform flow loops the station, alley wanderers loiter under shaders that cycle neon ads, the konbini queue forms and dissolves, karaoke loiterers smoke under the awning. Five acts run on a ten-minute cycle at 30× sim speed: Rush Hour, Izakaya Golden Hour, Karaoke, Late Ramen, Last Train. Rain particles and wet-ground reflection arrive at 22:00 and clear by 23:00. A sliding Yamanote train arrives and departs every twenty-four seconds. A delivery cyclist threads the alley. Eighteen director cameras cut between scramble, station, alley, and capsule hotel weighted to whichever act is live, and a TOKYO LIVE HUD with a mini-map shows crowd dots, the train, the active hotspot, and a rotating "WHO IS" lower-third for ten featured cast.

You don't play it. You watch it.

Why this is mind-blowing

Every system runs on its own clock and references the others. The traffic light at the scramble actually gates the crossing. The Yamanote train pulls in on schedule and the platform flow rebalances. The neon billboard shader cycles ads while the sky lerps from dusk pink to deep blue to rain. At 22:00 the rain pops on, the wet ground starts catching the neon, the alley cameras dominate the cuts, the konbini queue thins. The chyron weaves cross-system events together — "ramen yatai sells out as last train pulls in" — so it feels like one city, not seven scenes. After ten minutes the world reseeds with a new pedestrian roster and the night starts again. It's the cozy Tokyo stream you'd leave on while you study.