This document discusses using mobile, location-based games for learning. It describes a tool called SILO that allows creating location-based games by tying game missions to places on a map. As an example, it describes a game called "Premierløitnant Bielke" that teaches local history in Bergen by having students gather parts to build gunboats at historical production sites. The document outlines evaluating such games through video analysis of player interactions to understand how gaming activity and available resources are manifested.