Last year, Activision started a new convention for its marquee series, Call of Duty. Call of Duty experience (XP) 2011 was set in L.A. and gave fans the first look at Modern Warfare 3’s multiplayer. In CoD XP 2011, attendees also had access to a paintball arena based on Modern Warfare 2’s scrapyard, developer panel discussions, $1 million Black Ops tournament, […]