You are born somewhere among Japan’s 1,740 municipalities. The family you are born into, how many classmates share your school year, where your town’s population is heading — all of it depends on where you were born. You live your life watching your classmates’ lives and your town slowly change. At the end, what you look back on is not how many years you lived, but how fulfilled that life was — and what your life would have been had you taken the other path at a crossroads.
Each dot is a municipality. Its size is the number of children born there each year.
Prefectures you have been born in are colored in.
This deletes all records and cannot be undone.
Life satisfaction is an in-game score (0–10) modeled on the Cabinet Office survey on satisfaction and quality of life; Japan’s average of 5.79 is that survey’s 2025 result. Sources: 2020 Census (population, ages 0–4 and 65+ by municipality, Ministry of Internal Affairs and Communications), 2020 prefectural life tables (Ministry of Health, Labour and Welfare), 2024 School Basic Survey (university entry rates, MEXT). Map based on National Land Numerical Information. Town population outlooks are simple estimates from these data, not official projections. Income and savings are rough guides. Town names romanized from Geolonia’s Japanese Addresses data (MIT License).
This life begins in this town.
“How satisfied are you with your life right now?” on a 0–10 scale. Recording starts at age 6. Japan’s average is 5.79 (Cabinet Office, 2025).
Body is health, Heart is everyday joy, Ties are your bonds with people and place, Savings is financial room to breathe.
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