GTG makes custom-branded Facebook games with charitable twist. For example, its You Play, We Give campaign for MasterCard donates as much as 10 cents to Junior Achievement Hudson Valley for every minute a person plays the game, which has more than 30,000 Likes and gets more than 80% of visits from returning visitors. On average, gamers spend 45 minutes on the game page each visit.The concept and execution are the same for GTG’s other big-name clients — Pepsi, Propel, Starbucks and Quaker. A user can play those companies’ custom-branded games on Facebook for a short amount a time until a pop-up box appears requesting that the user “like” the company in order to “double your donation.”“Not only are thousands of dollars going to charity as a result of people playing games, but large companies are successfully using branded social games to turn Facebook fans into customers,” Archer says.