Pig Bang level 1-20 is the introduction of the Lazer bird! The level is easy, but it is worthwhile to play it a few times to get the hang of this new ability. Launch the Lazer bird to the left of the planet, then tap/click the screen on the far-right pig. You will see purple crosshairs appear where you tapped, and the Lazer bird will turn in a straight line toward it.
Debut: This level is the debut of the Lazer Bird, the Space version of the Yellow Bird. He obeys normal physics until triggered, then becomes a laser; i.e, goes in a straight trajectory to point triggered until he contacts another object. At that point, he obeys normal physics again.