Crossplay is a popular mechanic in games like Call of Duty: Modern Warfare 3 thanks to its ability to allow friends to play together, no matter what system they have a game on. However, this setting can also put you at a disadvantage by placing you against a player using a mouse and keyboard, which allows for easier aiming and sharper accuracy. It sets you up for a real headache and frustration. Because of this, many players may want to turn off the crossplay option in the game so that they will only be playing against those on the same platform as them.