Double tap basically makes your gun shoot faster just like in Call of Duty World at War.
Black Ops does have zombies
Yes there will be zombies and zombies campain
Yes, CoD Black Ops 2 has zombies.
cod: world at war & cod: black ops
the new black ops has
yes
Black Ops has a zombie mode
In zombies yes but online no
you mod
no
There is definitely zombies in COD BO, even though it was made by different people to WaW.
It is a myth and not something you can get