Anthony Taormina of Game Rant writes: "With less than 24 hours remaining until the highly anticipated release of Call of Duty: Black Ops, the latest entry in the extremely popular franchise, there isn’t much time to decide whether or not to purchase game. For those who are still on the fence about whether or not they should pick up the game, let us provide a brief refresher course as to what is on the menu this time around. For those of you who have already pre-ordered the game or might be preparing for a midnight trek out to your local 24 game retailer of choice, perhaps you would like some light reading for your iPad, iPhone, or hey — go old school and print this thing out for some tactile reading."
The video on Black Ops 1 shows some separate rooms, assets, and other features which exist outside of the boundary of the game.
From DownSights: "Black Ops is not Black Ops without Nuketown. Following the tradition of releasing Nuketown for Black Ops games, the new Black Ops Cold War game also offers a revamped Nuketown called Nuketown '84.
Nuketown '84 has the same dimensions and map layout except for the aesthetics. The map's aesthetics have changed to fit the 80s theme, with destroyed buildings and graffiti-filled walls compared to a clean 50s suburban neighborhood seen in Black Ops 1."
Jacob writes: "What do we have with the original Call of Duty: Black Ops? Quite simply, one of the best Call of Duty titles of all time."
"there isn’t much time to decide whether or not to purchase game"
actually there's many many years to decide.