Make your next party a scavenger hunt adventure for 4 teams (up to 24 people)! Turn a city into a giant game board, receiving clues and completing challenges from your smart phone. Choose from Los Angeles, Hollywood or 13 other popular cities. Must have 1 smartphone per team of 2-6 people. Play any day from dawn to dusk. Expires: April 30, 2014 

http://www.urbanadventurequest.com