This game counts earthquakes magnitude 5.0 and above near each city.

• The source is the official USGS earthquake catalog count endpoint.
• Each city is measured as the number of M5+ earthquakes within 250 km of its center.
• This build uses a fixed historical window from January 1, 1975 through December 31, 2025.

It is a nearby-earthquake count, not a full engineering risk score and not a guarantee about future shaking.