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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

Terraplot preview interface
Terraplot logo

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.