Works / Terraplot
Terraplot
A location-based product that turns walking into play on a map.
Terraplot is a GPS territory game where moving through real places captures cells on a map. It connects movement, maps, territory, and lightweight competition in one loop.
This page documents Terraplot by Ko Yamasaki (山崎 康): the concept, interface, technical stack, and what has been implemented so far. The goal is to rank not only for name searches, but also for queries around location-based apps, map products, and GPS games.
Screenshots


Overview
- Designed to transform walking through real places into map-based territory capture.
- Combines location, mapping, and a lightweight game loop into one iOS product concept.
- Featured in the portfolio as a representative project for location systems, product design, and interaction design.
Tech Stack
SwiftUIMapboxFirebaseGPS / Location ServicesProduct design and interaction design
What Was Built
- Designed the core loop around location updates and territory capture.
- Built interface patterns for visualizing captured cells and map state.
- Added a dedicated SEO landing page under `koyamasaki.com` for discovery and portfolio context.
Related Links
The project background and design intent are also summarized in a draft note article.