The long-anticipated final downloadable content pack for Call of Duty: Black Ops II finally released for Xbox Live, and Treyarch clearly saved the best for last when it comes to the Apocalypse pack.

This DLC, which features two new maps, two classic redesigned maps from prior games and a new Zombie Mode, is sure to keep players busy. Pod and Frost will have players running around in new territory as they frag enemies; Takeoff and Dig will bring back memories from the classic Stadium and Courtyard maps from previous Call of Duty games; and Origins presents the most horrifying Zombies experience to date, as you'll not only have to contend with the undead in a Dieselpunk-fueled world, but also a large unstoppable horde of robots that won't hesitate to squash you.

The pack is available for download now on Xbox 360, and will release later this year for PC and PlayStation 3. It costs $14.99 (1200 Microsoft points). You can check out the launch trailer below.

Call of Duty: Black Ops II is available now for Xbox 360, Wii U, PlayStation 3 and PC.