Data credits

Maps and population puzzles use the following bundled datasets and software. The distributed source files are unmodified; the game prepares their data in your browser. City-based population estimates are approximate.

• World Atlas 2.0.2, by Mike Bostock, with borders from Natural Earth. ISC license · Original map data · Project
• TopoJSON Client 3.1.0, by Mike Bostock. ISC license · Bundled software · Project
• World Countries 5.1.0, by Mohammed Le Doze and contributors. This database is made available under the Open Database License (ODbL) 1.0. Original database · Project
• City Timezones 1.3.4, by Kevin Roberts. Package license notice (MIT) · Original city database · Package

Exact package versions, sources, and checksums