 Even before "Shōnen Sekai" debuted, Hakubunkan created special magazine issue that would focus on the Sino-Japanese War.The "Shōnen Sekai" magazine had many add-ins such as sugoroku boards.The sugoroku "Shōnen Sekai Kyōso Sugoroku" was originally produced as a supplement to the "Shōnen Sekai" magazine and is currently seen at the Tsukiji Sugoroku Museum in Japan.