Pig Keys

Pig Keys are special items available in Angry Birds Epic. Each Pig Key can open a Pig Gate of the same color, which may block off special levels and Friendship Gates.

Variants of Pig Keys
WizPig also uses Blue Pig Gates in a humorous way, such as making Blue Pig Gates appear (to block off Floating Hoghouse, Bamboo Forest and the Star Reef Castle, however, the birds used the previously blocked way to enter the castle.)
 * Yellow Pig Key: One must defeat Prince Porky in the Southern Sea to get the Yellow Pig Key. It unlocks all Yellow Pig Gates.
 * Blue Pig Key: One must defeat Wizpig for the first time to get the Blue Pig Key. It unlocks all Blue Pig Gates (plus the Floating Hoghouse).
 * Red Pig Key: One must complete Shaking Hall (Cave 1) in the Chronicle Cave and defeat the Dark Shaman to get the Red Pig Key. It unlocks all Red Pig Gates.