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Modern Warfare 3 Zombies: Aetherium Crystals Guide
Modern Warfare 3 Zombies is a sandbox game mode offering players an open-world Zombie experience akin to the likes of DMZ. Though many players may be content with battling hordes of Zombies‚ the mode offers players the means to progress through a linear story in the form of missions‚ along with the ability to look out for and farm for high-value items. One of these items is the Aetherium Crystals.