Same real, tile-streamed twin as street-level walk mode — 1.27M real building footprints, real streets, real land-use and water, real traffic navigating actual junctions — viewed from a fixed isometric angle instead of first-person, controlling a visible character instead of being the camera. Progress (coins, XP, achievements) is shared between both modes.

The name is the Flux essays' name for the whole thesis: a legible, playable twin as the first step toward a real participatory write-layer — where flagging something broken in the model becomes a real ticket in a real institution's queue. That write-layer doesn't exist yet; this is the playable half, honestly labeled as that.