You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract GameStop Revamps Business to Ensure Success in a Digital Future With Mobile Gaming Gaining Steam and Rumors That Microsoft, Sony Could Kill the Used-Game Market, Retailer Focuses on Data to Drive Sales By Jeanine Poggi, Published on April 09, 2012 1 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Register Now Already a member? Log in.