The competition is possibly the world's largest, and is largely uncurated. Amateurs bump up against well-known artists, and the entire city gets involved.
Reporter Alissa Walker wrote, "I realized that for the next two weeks Grand Rapids would essentially be host to a large-scale scavenger hunt. Find this artist, climb inside this venue, poke into dark corners, visit a new neighborhood, campaign on behalf of your favorite artist, debate a piece's value with your friends, make a decision, and move on to the next one, as quickly as you can. It's like a massive multi-player, explore-your-city game, and these people were taking it extremely seriously."