Angry Birds (game)/Unused Content

The first Angry Birds game to be released, Angry Birds Classic, contains unused/scrapped graphics and features that still remain hidden in the game's coding.

Stella Level
There is an unused level in the game called StellaLevel (sic), which will refuse to load. The level would probably have featured Stella.

Bubbles Level
Bubbles, unlike Stella, is actually able to load properly. However, the level will always have a score of zero and a Slingshot stuck under the ground. No Birds are included in the level either.

Tickets
Tickets could be used in the Mighty League in order to play its levels and found in the Bird Island levels (which would be replaced by Shockwaves). However, as part of a recent update, they aren't used anymore, mostly to make the game fairer.

Stickers
Some stickers were unused or retextured such as:
 * One featured a defeated Hal in a rectangular form as an icon. To obtain this sticker, the player had to use a lot of birds. This sticker was retextured to Red using the Slingshot as an icon. The form of the sticker is now a star.
 * Another featured tickets in an oval form as an icon. To get this sticker, the player had to use a determined number of stickers. This was deleted because tickets are not used anymore.