The entire Angry Birds franchise has tallied more than 1 billion downloads since it originally debuted in 2009! Angry Birds 2 just passed the 20 million mark in just one week!

[Teeqoz]

spurgeonryan said:

Barozi said:
The franchise is at 3 billion downloads actually.
http://www.forbes.com/sites/andyrobertson/2015/07/16/angry-birds-2/

Who do you trust? Yahoo or Forbes? ;p

If you had bothered to check sources you'd have seen that:

a) It was Gamespot that said 1 billion

and b) that was as of may 9th 2012.....

http://www.gamespot.com/articles/angry-birds-hits-1-billion-downloads/1100-6375885/#ftag=YHF6738a5f