Adapted from Quizzity by David Peter. The six-city game, city database, distance thresholds and speed multipliers derive from the original. MIT license.
Local map rendering uses Leaflet (BSD-2-Clause) and Natural Earth public-domain map data. Map borders are approximate and intended for gameplay.
City and country data supplied with Quizzity derives from GeoNames, licensed under CC BY 3.0. The upstream historical dataset is retained; labels are not a current geopolitical reference.
This adaptation bundles the map locally, removes analytics and server logging, and adds answer review, capitals mode and keyboard controls. Scores are stored only in this browser.