Buy for Zombies Bonus Maps
When you buy the Black Ops Pass you get a Zombies bonus map right away. You'll still get this if you buy the Black Ops Pass now, it was not just a pre-order bonus. If you're a huge Zombies fan it makes sense to buy this and get more Zombies.
The new Classified Zombies map is available immediately, and it takes you back the Ultimis crew. This special experience will also answer some long-standing questions from the Black Ops zombies experience, which is a big sell for fans of this game mode.