Ban-sugoroku reached Japan from the Asian mainland by the Nara period and belongs to the same "tables" family as backgammon. It was popular enough to be banned repeatedly for gambling. The picture-race game of the same name (e-sugoroku) is a separate, later tradition.
Status
Not implemented. This game appears in the catalog and is visible in the app,
but it is marked *Coming Soon* and cannot be played.
Pending: ban-sugoroku (the tables-family game) needs bearing-off, the bar and hit/re-entry logic, which is a separate engine from the cross-and-circle race primitive that powers Ludo and Pachisi.
We would rather show an honest placeholder than ship a rules approximation of a
game that people actually play.