I don't know how but you definitely can. Probably in the options menu.
I think you have to make a new account.
You cannot turn off the blood but you can turn off the gore. If you turn off the gore it doesn't work in online play
i would like to say cod black ops has better graphics. because there is actual blood in black ops. mw2 just has money fly out of the person when they die.
MW3 is after COD black ops.
CoD black ops :)
Cod black ops
Call of Duty Black Ops is rated M because it has blood and gore, language, and violence.
I personally don't believe that cod black ops should be an 18. I have played it and i don't think it is actually bad enough to be classed as an 18. if you are concerned you can turn off the blood and gore at any point and if you believe it is too rude you can just turn down the volume. Multi player has reduced blood anyway so i think if you take all that into account it is not an 18.
There are approximately 52 trophies in cod black ops (Playstation3)
Rated M for blood gore and strong language
you can its called muting ur tv
no