Madden NFL 13 is an American football video game based on the National Football League, published by EA Sports and developed by EA Tiburon. EA's Chief Creative Officer, Richard Hilleman, said that defense would receive various changes in mechanics and controls, one of the first known changes in the game. A 64-player fan vote tournament to determine the cover athlete began on March 7, 2012. The vote-in round matched up a pair of teammates from each of the 32 NFL teams, the winners of which were seeded in a 32-player bracket. The cover features Calvin Johnson of the Detroit Lions. Source: Wikipedia, "Madden NFL 13", available under the CC-BY-SA License.