The app names a place. You name one that starts with the letter the last one ended on, and the chain runs on from there. Anywhere on the map counts. Scoring runs inversely to how well known the place is -- Tokyo is worth almost nothing, somewhere nobody at the table can place is worth a great deal -- so par is a points target the easy answers cannot reach.

Players: Two or more people in the car.

Driver: Supplies the places from memory.

The bar: A score set by how obscure the places are, read off real populations.