This document contains case studies on how location-based games like Foursquare and Gowalla have been used for political and charitable purposes. It describes how a Texas governor used Gowalla passport stamps to promote political rallies, how Foursquare created an "I Voted" badge to encourage voting, and how a London meetup earned a special Foursquare badge by having over 325 people check in at the same location. It also mentions possible uses of location-based games for charity shops, coupons, and volunteer opportunities.