IGDA Japan has held the Fukushima Game Jam every year since August 2011, in order to support revival by the game industry, which will not be subject to the influence of radioactivity. The first time in 2011, about 50 people gathered in the hole, which is about 20 km from the Fukushima I nuclear power plant - when united with the four domestic satellites, 120 people participated. The second time in 2012, four nations/regions, five halls and 170 people participated. The third time in 2013, four nations/regions, 14 halls and 531 people participated. By clarifying the concept, how to increase participants and continue the goal of FGJ, Toshifumi will show one of the best ways to contribute to revival.