Pig Bang 1-27 is the 27th level of Pig Bang. Pig Bang level 1-27 features a new concept. Notice the flashing red lights atop the two TNT? The two are actually connected: Detonating one will detonate the other!
The northmost and southmost pig can be tricky if you didn't detonate the northmost TNT.
For level 1-27 aim the first Blue Bird barely above the smaller planet, splitting late to cause the TNT-tower to topple rightward. The two explosions should clear all pigs from the top half of the planet. Use another Blue Bird to pop the final pig.