StreetComplete is an Android app that makes it fun and easy to contribute to open data by completing quests.
Quests are used to fill in incomplete or inaccurate information on OpenStreetMap, an open data project dedicated to mapping the world through crowdsourcing. Anyone can contribute to the map and, thanks to free culture and open source licenses, that data can then be used by anyone for anything, from video games to custom map applications and artwork.
