I’m a bit of a map geek, and in my youth I spent many hours playing Sim City, so it’s no surprise I was excited to play Monopoly City Streets. The game is a heavily-modified version of the classic board game, played out across the map of the world. You compete with players from all over the planet to buy streets, build properties, and amass as much cash as possible.
The first thing I noticed was that the map display uses Google Maps, but the site actually uses OpenStreetMap data for gameplay. Actually, the first thing I noticed was that their servers were being absolutely crushed by all the people rushing in the play the game, but I digress. OpenStreetMap is a really cool project to build mapping data using the same model as Wikipedia – interested volunteers add and verify data and everything is covered by a Creative Commons License.