When small, white objects begin swirling around the eye of the black hole and become larger and in greater numbers, leave.
Shoot the new, strange green object in Zone 1, Level 15 to unlock the original game.
The Queen comes out of the purple crater and cannot be destroyed.
In Zone 3, Sun, stay away from the top left corner of the screen as much as possible. That is where the deadly solar flares always attack from.