It is a very, very British thing. A generation or two ago, almost everyone played it at school and it was Very Serious Business. I guess you needed something to occupy yourself before Pokemon Go was invented.
(When I was a kid, conkers were so prized we chucked sticks at them to try to get them to drop. So it was a bit of a shock to me when they started just being left where they fell. Kids today, off my lawn, uphill both ways, etc etc).
https://upload.wikimedia.org/wikipedia/commons/thumb/3/3e/Ge...