Abstract
Recently, vacant houses have been increasing all over the country. It is difficult to sell or utilize vacant houses
filled with large amounts of household goods and personal effects. Due to their significant deterioration and unsanitary
conditions, such vacant houses are more likely to be designated as “Specified Vacant Houses”, which are subject to
administrative guidance or enforcement action by local authorities. Therefore, it is important to encourage citizens to clean
up and dispose of unnecessary items before their homes become vacant. As part of a joint study with Fukushima prefecture
Kitakata City, this study developed three serious games—a simulation game, an action game, and an electro-mechanical
game— to be useful for awareness activities for the prevention of vacant houses. They were designed as games that could be
quickly and easily enjoyed at local events. Additionally, by developing versions for adults, children, and seniors, they became
effective tools for our awareness activities across all age groups.