Adjust parental controls in the console settings - this will adjust the content available in all games played on said console.
steam > setting > nickname
13
Mature 17+
call of duty 4 or cod 4 is a a 16+ game
Call of Duty Black Ops is rated M for Mature.
The highest rated is Call of Duty 3 with a Gamestop rating of 8.2 and a user score of 8.5. Call of Duty World at War Final Fronts was made by a different developer and has no Gamespot rating and a user rating of 7.7. see related link
Yes puase it then go on settings and change what you want(brightness,screen angle,volume,ect.)
4 stars
8.5 out of 10
definetely M.
On average from most reviewers it is a 8.5 rating
M for Mature, 17