Instructions
Ask at least nine of your friends in ̶0;Club Penguin̶1; to join you at a specific date and time at the Night Club.
Go to the Night Club as planned. Click on the ̶0;Map̶1; icon and click on ̶0;Town̶1; on the map. When you arrive in the Town, click on the Night Club to enter it.
Wait for your friends to arrive. Once you have 10 Penguins in the room, the Disco Ball drops down from the ceiling. The stage background also changes to show light reflecting off the rotating ball. The light appears as tiny dots moving in horizontal lines from the left side of the background to the right.