Fact #2680: Angry Birds 3.3.0 Windows Phone has unused sprites for Red using the Short Fuse potions. It's possible the unused red potion may have turned the pigs into Red and these are when the potion effects are stacked. This is also what the unused splitting Red from RCAB was.
Fact #2677: There is an unused map feature in Angry Birds HD 4.2.0 that can be reactivated which was made for the scrapped Adventure Mode (which may have been for the cancelled f2p update). All levels in it aside from the last two are from Birdday 4, likely being placeholders.
Going by this, it's likely that Piglantis was originally planned to be or replaced a Madagascar collaboration, seeing how the 3rd film released later that year. (2/2)
Fact #2473: In the files of Angry Birds Seasons, Piglantis is occasionally referred to as "Movie." There is also unused data in it referring to caged animals, monkeys and a hunter. Alongside that, the loadlist in 2.4.0 mentions "INGAME_MADAGASCAR_CHARACTERS_1" (1/2)
Fact #2338: The engine used for the pre-Unity Angry Birds slingshot games is called "Fusion" (aka Ka3D). The only game to mention this is Seasons in the credits.
Fact #2321: Here is a blooper reel from the development of the rigging from Angry Birds Toons and other Angry Birds animated shorts, uploaded by Jussi-Petteri Kemppainen in January of 2022.
It's #EarthDay2022! 🌍 In celebration of this year's Invest In Our Planet theme, we'll plant 10 trees for every RT in partnership with our good friends @Ecologi_hq!
Let's work together this #EarthDay to invest in this incredible planet we call home.
RT to plant 10 trees! 🌱🌳❤️
Fact #2117: Footage of "Mighty Mouse," the unused original Mighty Eagle from version 1.4.1 which would be accessed after failing. Instead of a sardine, a mouse is thrown and Mighty Eagle drops down from the sky. The level complete screen will say "Level Skipped!" when used.
Fact #2098: The May build of Bad Piggies: Create Your Own Angry Birds Levels has been fully fixed by IGTBAP. The missing UI elements have been added back in so you can place down different birds again.
Fact #2044: Before Rovio Accounts, Angry Birds' cloud save system was originally called "Angry Birds Sync." While it was reworked into Rovio Accounts, code for a sync button that can be re-enabled exists in version 2.3.0 of Angry Birds. (1/2)
Fact #2038: The latest Angry Birds Reloaded episode " " is mistakenly called "Daft Piggies" in English
(The title is missing in all languages but English)