Jenga mode is an extra level in the game that offers extra content and a chance to earn new coins and pigs. This mode can be unlocked by an in-app purchase or with a special redeem code. 

If you have purchased an Angry Birds Transformers Jenga toy, you can input the redeem code with the toy into the game by tapping the ‘Enter code’ button. This button can be located in the game by tapping the small house at the bottom of the island.

IMPORTANT: The ‘Enter Code’ button is available on Android devices.