Parties are occurrences that happen every month or so on Club Penguin, usually in celebration of something. They typically last two weeks, although earlier parties lasted one week or even a few days, Parties notably change the appearance of Club Penguin, such as designs of rooms being decorated, and different musing playing in rooms as well. Central rooms such as the Town, Snow Forts, and Plaza are almost always decorated, while out-of-the-way rooms such as the Iceberg, Dojo, or Mine are not often decorated.
Parties almost always have free items, varying from one or two, to dozens. Mascots often visit parties as well, if they are related to the event. For instance, Gary the Gadget Guy often visits during Halloween Parties due to his interest in the paranormal.