Perk-a-Colas are consumable utilities in Zombies, in the form of drinks, that help the player when bought and consumed. The Perk-a-Cola machines retain the appearance of a vending machine. Perk-a-Colas made their first appearances in the second canon Zombies map, Zombie Verruckt. There were originally only four perk-a-cola machines, Juggernog, Speed Cola, Quick Revive, and Double Tap Root Beer, although more were introduced in later maps. Below is a list of available perks and their abilities.
Quick Revive is one of the four original perks introduced in Verrückt. It costs 1500 points in multiplayer, and 500 points when playing solo. In multiplayer, it allows you to revive teammates quicker. In solo, when the player is downed, they will recieve Mustang & Sally and will be free to shoot zombies until they are revived.
Double Tap Root Beer
Double Tap Root Beer is one of the four original perks introduced in Verrückt. It costs 2000 points. It increases the fire rate of all weapons b 33%, and also allows the player to place Bouncing Betties and Claymores quicker.
Double Tap II Root Beer
Double Tap II Root Beer is a perk that was introduced in Green Run, as an improvement to it's predecessor. Instead of simply increasing the fire rate of weapons, it will shoot two rounds for each round fired.
PhD Flopper is a perk that was introduced in Ascension. It costs 2000 points. It grants that player immunity against explosive, fire and falling damage. An added effect is that, when diving-to-prone from a height that would cause fall damage, a explosion is triggered around the player in a 7.5 meter radius.
Deadshot Daiquiri is a perk that was introduced in Call of the Dead. It costs 1500 points. It increases hip-fire accuracy by 33%, reduces recoil on all weapons, removes idle sway from sniper rifles and changes auto-aim so it targets the head rather than the torso.
Mule Kick is a perk that was introduced in Moon. It costs 4000 points. It allows the player to carry three weapons. It holds the distinction of being the only perk featured in Nacht der Untoten, as it was added to all maps (excluding Dead Ops Arcade) on September 27th, 2012.
Tombstone Soda is a perk that was introduced in Green Run. It costs 2000 points. It allows the player to die prematurely when downed, and when the round ends, the player is free to collect all of their equipment via a power-up, including weapons, ammunition and perks.
Who's Who is a perk that was introduced in Die Rise. It costs 2000 points. When the player is downed, it spawns a doppelgänger of their character, which can then revive their downed selves, retaining their weapons and perks (except for Who's Who). This doppelgänger is equipped with only an M1911, and has blurry vision. If the downed character dies, the player takes full control of the doppelgänger, and loses all of their perks and weapons.
Electric Cherry is a perk that was introduced in Mob of the Dead. It costs 2000 points. It creates an electric shockwave around the player whenever they reload. It has the ability to kill up to ten zombies, possibly more, with one electric shockwave.
Vulture Aid is a perk that was introduced in Buried. It costs 3000 points. The perk has multiple, varying effects. The first is that the player can see perks, weapons and the Mystery Box through walls. The second is that sometimes, zombies will drop ammunition or points. The third, and last, is that some zombies will release a cloud of gas when killed, which players can stand in to deter other zombies.