Angry Birds Epic/Unused Content

Piglette
In Angry Birds Epic, there are unused sounds called "piglette_(something)", most likely for a piglette. Most of the sounds sound like Stella.

Developer Console
A Developer Console does exist in the game's code, Look in the Games DeveloperConsole.cs file. It is currently unknown how to enable it and will likely stay hidden to prevent online cheats.

Beta Pillar
When the game was released, the Pillar on the top used to have a Mighty Eagle head. In later versions, it got changed to Red's head.

Beta Knight Red
Previously, the Knight-class Red had a green plume on his helmet instead of red. And on one of the posters, the feather was even yellow and gold. In the later versions, the feather color got changed to red.

Beta Protection Sprite
Before the worldwide release of Angry Birds Epic, the sprite used when Red protects his fellow Birds were originally shields circling around the Bird. But now it is now a white curved barrier above the Bird.

South Beach - 3
The third level of South Beach.

South Beach - 4
The forth level of South Beach.

Trivia

 * It is unknown why the South Beach levels: South Beach - 3 and South Beach - 4 were removed from the game.