Dont they already have like 6 angry bird games already?
Glory to Atom/Xenu/Bel-Shamharoth/FlyingSpaghettiMonster/HypnoToad/Yog-Sothoth/Kraff/Umbra/Yu-Yevon/Tak/Elynie/Shuma-Gorath/Unicron/RNGesus/ Tats /Hydra/Azrael/Leviathan-Lord of the Labyrinth
At first Call of Duty was the super-mainstream game, then it died and got replaced by minecraft,(Parallel to minecraft was Angry Birds) and both died, dunno, in 2014?