Angry Birds Bad Piggies Level 21-13 Walkthrough
One strategy for Angry Birds Bad Piggies level 21-13 is to launch the first blue bird straight ahead, aiming at the first two vertical wood planks. Splitting very late should destabilize the left structure, and collapse. For our second shot, we aimed blue bird at the TNT. The resulting explosion should send the last tower crashing the right. The score in the video below is 91,820.
