Example: debug_balloon.lua – a single TNT crate hanging from a balloon, with no pigs. Likely used to test balloon physics.
This is clearly where the developers tested collision detection and bird powers. What’s odd is that this sandbox remained in the final shipping code of all platforms (iOS, Android, PC, and even the BlackBerry PlayBook version). It’s a digital fossil of the game’s creation. angry birds rio unused levels
It contains four levels: