Activision now offers the Apocalypse DLC for the Windows and PS3 editions of Call of Duty: Black Ops II, following a month of exclusivity for the add-on the Xbox 360. This is available a la carte or as the final chapter in the game's season pass, and here's a reminder of what it offers: "The fourth and final DLC Pack from Activision and its award-winning studio Treyarch lets players dig into four thrilling and diverse multiplayer maps, as well as Origins - the all-new, wildly creative Zombies experience that reunites players with the original heroes from Call of Duty®: World at War, and closes this chapter of the Zombies story arch for Call of Duty®: Black Ops II."