Where the data comes from
Airports, routes and airlines in SkyQ and AirportQ come from Open Travel Data (OPTD, CC BY 4.0), with some city names from GeoNames (CC BY 4.0). The data is processed: distance is the great-circle distance and flight time is estimated from it. The OPTD route network reflects schedules from around 2021.
The operators of each aircraft type in PlaneQ come from the OpenFlights database (ODbL) and reflect the fleet of around 2014. Aircraft figures (typical seats, range, first flight) are averaged manufacturer data.
The maps and cities in the geography games and the metro populations come from Natural Earth (public domain), and the runway layouts from OurAirports (public domain). Polish city names are GeoNames alternate names (CC BY 4.0), taken via OPTD. The metro systems in the Metro game come from Wikidata (CC0).
The daily puzzle is chosen deterministically from the date, so every player gets the same puzzle on the same day.
Credits and licences
- Open Travel Data (OPTD), by the Open Travel Data project contributors, licensed under CC BY 4.0. Changes: we selected and transformed the data (distances, estimated flight times, airport ranking, puzzle pools). The authors do not endorse this site.
- GeoNames, by GeoNames and its contributors, licensed under CC BY 4.0 (city names, via OPTD, and directly: cities of 100,000 people or more in Grid, capitals, currencies and languages in Stamp). Data processed by us (filtered, populations rounded). The authors do not endorse this site.
- Contains information from OpenFlights (Jani Patokallio and contributors), made available under the Open Database License (ODbL) 1.0. The file aircraft.json is our derived database of OpenFlights and is also licensed under the ODbL: you can download it on this page (link below), and in the source code it is src/data/aircraft.json; the script scripts/build-data.mjs rebuilds it from the OpenFlights source files. The other files in src/data are licensed under CC BY 4.0 (OPTD, GeoNames).
- The data is provided without any guarantee of accuracy and is not suitable for navigation. Airline and manufacturer names belong to their owners and are used for identification only.