COD Black Ops 2

If you play the Original BO2 on xbox 360, its dead.. Too much cheaters.. But since a moment, Treyarch removed the Theater mode from the game. so you cant wantch public infecion anymore. but you can bupass this patch if you have a friend who saved some infections on his playercard.
BUT
If you reaally want to play BO2, i would go with Plutonium on PC. This is privates servers and its free! a lot of trickshot servers and some original multiplayer too.
You can also play MW2, MW3 BO2 on plutonium