Beware! The piggies are invading the original Angry Birds app!
One strategy for Angry Birds Bad Piggies level 21-1 is to split a Blue bird into the leftmost TNT, spraying the level with debris. Bomb the middle of the level with White bird. It should ricochet into the hill on the right then roll down and detonate both TNT below. Those crystals are worth 3000 pts. Finally, launch yellow aiming at the last TNT on the right, causing the boulder to fall on the last pig. The score in the video below is 92,100.