The Dance-a-Thon was a Member Party that occurred from January 15 to January 20, 2009. Also, along with the party, Club Penguin launched the new mini-game Dance Contest. The decorated rooms were the Night Club, the Dance Lounge, and the new Night Club Rooftop. It was extended, like many popular parties, until January 20, 2009.
- This was the first appearance of DJ Cadence.
- Many penguins claim that when the metal pad on the Night Club Rooftop was clear of any penguins, Cadence would come. However, Billybob later stated this was false.
- In the Night Club, there was a sign that listed the penguins who had just entered the room.
- This was the first time the Night Club Rooftop could be accessed.
- During the party, non-members could not play Thin Ice, Astro Barrier, or DJ3K, due to the party being held at the Night Club, only for members.