Bike Tag is a game intended to get people to share secret spots and get out and learn about the city they live in.
Someone posts a photograph of a spot, and everyone else tries to identify the place. To prove you've successfully identified the spot, you must go to the same spot and take a photograph. This is verified by your phone's GPS sensor at the time you take the photo. You won't know that you're right (or wrong!) until you actually submit your photo. If you guessed correctly - you are now in control. You have 30 minutes to take a photo of a new place. Once you take your photo, everyone else tries to identify your spot - and the game repeats itself indefinitely.
The fun of the game comes from sharing interesting places in the city with people who might not know about them. Or sometimes the fun is in solving the riddle of the photograph - for example, maybe it's a really common place, but the photograph is a little abstract with just a little clue as to where it's taken from.
You can get to the spots via foot, bicycle, transit, I suppose a car could work as well, but it'll be harder to find interesting spots in one of those!
$ carthage bootstrap