[Slightly offtopic] The app street-complete allows to hunt for information and contribute to OpenStreetMaps

My favorite feature: The Team-Mode, where you and friends can battle it out. Great when hanging around with a bigger group of friends, you can split up for a set amount of time and see, who gets the most points.

I am not affiliated with the app, but really enjoy it and thought that you guys might like it as well. Have a nice day!