First Strike

is an upcoming downloadable content package for Call of Duty: Black Ops. It will include four multiplayer maps and one zombie mode map. It will be available February 1st, 2011 for Xbox 360. It will cost 1200 MS Points. ($15.00) No date has been released for other platforms. All four multiplayer maps have been confirmed to be "interactive", like the doors on Radiation.

Multiplayer Maps

 * Berlin Wall
 * Discovery
 * Kowloon
 * Stadium

Zombies

 * Ascension