Perk-a-Cola has always been a strong power-up in Zombies, and returns to Call of Duty: Modern Warfare 3‘s battle against the undead in nine different flavors you can find and craft. Some cans are only available if you track down their vending machines, or if you obtain their Schematics as a reward. The random element to either of these options can make it tricky to get the items that quench your thirst with an active buff.
