Median age is the age that splits a population into two equal halves: one younger and one older.

• Higher median age means an older population overall.
• This game uses the current World Population Review table, where the visible metric column is labeled Median Age 2024.
• In each round, arrange four places from oldest to youngest by median age.

One number can reflect fertility, longevity, migration, and who a place is losing or attracting at different ages.