To play Call of Duty: Advanced Warfare, you must be 17+ due to the Mature rating given to the game by the ESRB. Major Call of Duty events hosted by MLG and UMG allow for players to compete as long as they are 13+ and have parental consent. Many professional Call of Duty players are 17 years old and are unable to compete in this tournament due to the age restriction which causes the event to be less competitive. If a person is legally allowed to play the game, they should be able to compete alongside others. If a player is 17 years of age or older, he/she should be able to compete in the Call of Duty Championships 2015!