TOKYO PAW — third-party notices

PLATEAU 2025 datasets for Chiyoda, Chuo, Minato, Shinjuku, Bunkyo, Taito, Koto, Shinagawa and Shibuya wards, edited for this game. Public Data License (PDL) 1.0, with source attribution and disclosure of modifications. Survey year is mostly 2021; release year is not a claim of present-day accuracy.
Source: https://docs.plateauview.mlit.go.jp/datasets/3d-tiles/
Terms: https://www.mlit.go.jp/plateau/site-policy/

GSI DEM5A elevation tiles, resampled and datum aligned for visualization.
Source: https://maps.gsi.go.jp/development/demtile.html
Terms: https://www.gsi.go.jp/kikakuchousei/kikakuchousei40182.html

Nikken Sekkei NEC photograph used as a shape reference only; photograph not redistributed in the app.
https://www.nikken.jp/ja/about/projects_history/corporate_history/07_03.html

Runtime software: three.js 0.186.1
The MIT License

Copyright © 2010-2026 three.js authors

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

Build-time tooling (not bundled into the game): Vite MIT, TypeScript Apache-2.0, Draco Apache-2.0, 3d-tiles-renderer Apache-2.0. Lockfile and source preparation scripts are in the developer project.

STREET ENVIRONMENT (local candidate)
Source: GSI experimental road centreline vector tiles, processed for this game.
https://github.com/gsi-cyberjapan/experimental_rdcl
Terms: https://www.gsi.go.jp/kikakuchousei/kikakuchousei40182.html (PDL1.0)
Street positions retain source coordinates. Widths, pavements, lane markings, signals, lighting and planting are inferred artistic details, not a current measured reconstruction. Source records mostly dated 2016-05-17. Grade-separated roads are omitted rather than flattened.
Build-only polygon operations: Shapely 2.1.2 (BSD-3-Clause); no additional game runtime dependency.

WATER, BRIDGES AND PUBLIC ROAD GUIDANCE
Source: GSI experimental_bvmap official vector tiles, zooms 15 and 16.
https://github.com/gsi-cyberjapan/gsimaps-vector-experiment
https://maps.gsi.go.jp/help/pdf/vector/dataspec.pdf
https://maps.gsi.go.jp/help/pdf/vector/attribute.pdf
GSI content terms / Public Data License 1.0: https://www.gsi.go.jp/kikakuchousei/kikakuchousei40182.html
Edited water polygons, conservative collision masks, road corridors and simplified bridge decks.
Only source-classified public-road bridges or centreline crossings confirmed by paired detailed bridge edges are passable.
Bridge height and water level are DEM-derived display estimates; width is inferred from class where exact Width is absent.
Imperial Palace inner grounds use a conservative game exclusion inferred from moat geometry, not a legal access boundary. Official visitor context: https://sankan.kunaicho.go.jp/guide/koukyo.html
Build-time geometry processing: Shapely (BSD-3-Clause), NumPy (BSD-3-Clause), not bundled at runtime.