-You can now leave the edge of the screen to appear on the other side
-Enemy ships are invulnerable until they fire their first shot (required for balancing once you can leave the screen)
Tired of being hunted by Man an asteroid decided to fight back and try to destroy the ships. Unfortunately, Man did not like an asteroid standing up for itself. If one asteroid was bad then the trillions of others were just as guilty. They must all be destroyed. You are a peaceful asteroid. Defend yourself from the onslaught of Man.