Depends who your playing with and what kind of mood their in. PG-13 to a M rating most likely.
The age is 17+ 16+ for UK
Unfortunately, you can't change any of the settings in Black Ops multiplayer.
In Call of Duty: Black Ops, to go on multiplayer you have to go to multiplayer on the menu that says: CAMPAIGN MULTIPLAYER ZOMBIES OPTIONS
Yes.
in black ops multiplayer, everything's unlocked already.
Simply go to the black ops multiplayer settings and disable the aim assist
18 it looks AmAzInG
Online Xbox 360 play is not free and the online multiplayer mode of Black Ops is the only format for multiplayer
Yes. Both modes are one game. Black Ops 2 includes a Singleplayer campaign, a Multiplayer, and Zombies!
Call of Duty: Black Ops made by Treyarch will have an 18 age rating in the UK. You best hurry if you want to buy it, its released in 5 Hours.
No
Black-ops will have an offline version of the multiplayer, with AI opposition. Also you will be able to level up as if you were online =)