The Roswell Experience - Location-based Story and Alternate Reality Game
Using Conducttr, local production company Airhart Media created a location-based experience that told Roswell's secret history of how aliens influenced the work of Goddard, Oppenheimer and others.
32 businesses and points-of-interest around the town held story segments that were unlocked by tweeting or texting the code found at the location. Each story segment was piece of a bigger puzzle that revealed the GPS coordinates of an alien landing.
In addition to the "grid game" there were several other text-based casual games for those less inclined to travel around the town.
The experience started with a crop circle and finished with an alien landing in Roswell's Spring River Park & Zoo
http://tstoryteller.com