Now before you go to another person because I am only a teen let me tell you. I have been playing Call of Duty for more then half of my life, and Ghosts is the best game with a clear message. Fight back when something is not right.
Campaign: the first thing I want to touch on is the Campaign. Although most people go straight to multiplayer I started with this. The campaign is amazing and is about a small squad or "Ghosts" fighting back when a missile hits America . The enemies are from south of the equator. They also call themselves "The Federation". The campaign has a lot of violence and Language. Not as far as Black ops 2 but a little more then MW3. If that makes sense to you
Multiplayer: This mode right here is why almost everybody buys a call of duty. There is a lot of violence since it is a war simulator. And if you a mic, you will almost certainly here language from people who feel it is ok it say the "N" word or say drop the "F" bomb. This can all be avoided though but a quick mute.
Extinction: This is just a bonuses game mode. Like Zombies in [email protected]
All it is, is you going to from alien hive to alien hive and destroying them. The enemies are only aliens so this game mode is not so bad.
Over all this game give a good message with a good role model. And if you hear cursing from multiplayer just mute them.