When Call of Duty: Black Ops launched in November 2010, it came bundled with a single Zombies map: the fan-favorite Kino der Toten . Set in an abandoned German theater, Kino was a masterpiece of atmosphere and survival gameplay. But for the true Zombies faithful, the real journey didn’t begin until the DLC season kicked off.

The four Zombies DLC maps for Black Ops 1 represent a turning point in the franchise’s history. This is where Treyarch stopped making simple "survival rings" and started crafting sprawling, Easter-egg-driven narratives. From the Pentagon’s cursed hallways to the biodomes of the Moon, these maps transformed a Nazi Zombie mini-game into a time-traveling epic.

Just remember: Stay away from the mud on Shangri-La, shoot the monkeys on Ascension, and for god’s sake, hack the damn excavator on Moon before it crushes the biodome. “The lumpy ones go down easy. It’s the runners you gotta watch for.” — Tank Dempsey