This game compares a measurable city-level trait across photographed cities.

• The image shows the city; the number tracks one specific city-scale trait such as geography, daylight, or transit.
• That means the fun lives in the mismatch between the picture in your head and the measurable thing the place is doing.
• The figures are broad comparisons, not a complete theory of the city.

This is about astronomical daylight, not cloud cover or how much sunshine the city feels like it gets.