Angry Birds Free 3 Star Walkthrough Level 21-4
One strategy for Angry Birds Free Bad Piggies level 21-4 is fire the Yellow bird into the triangular stone peak of the middle tower, clearing the pig within and trying to pop the “clawed” pig on the extreme right. Fire the Orange bird into the leftmost pig, detonating the TNT nearby. The blast can clear all pigs! The score in the video below is 80,840.
