When we cannot use GPS-based navigation in buildings such as shopping malls, and we cannot find the way to our destination that we have checked on the map beforehand, we need to be able to figure out our location in real space from the map and the scenery around our location. In this study, we report on the use of a serious game in Cluster, which aims to improve the ability to grasp space by reading the map in advance and experiencing the movement to the destination in the virtual space.