Snowball Fight

A Snowball Fight is a large, organized snowball battle between two or more opposing parties. During a snowball fight, penguins take sides with the group of their choosing, usually by changing colors and/or clothing, and throw snowballs at the opposing groups. These fights usually happen in the Dojo, the Snow Forts, the Iceberg or the Cove.

Some notable examples can be found here.

Variations and Gimmicks
Snowball fights have been known to be a cause of bans, due to players becoming too aggressive and violent.

Where one side owns a hostage, prince, or princess (different words for the same thing), and the other side have to rescue them, either by moving up to them, and heading back to base, or by saying a password, "spell". Usually these hostage(s) can move, but pretend to be trapped.
 * Hostage

The penguin must move to a pre-determined location, and come back to another location.
 * Capture the flag

Jr. Snow practice is usually thrown together at the last minute, or practice by one army.
 * Small/Unorganized/Jr. Game

Two+ Sides. Unlimited snowballs. You get hit by a ball, you're out.
 * War

"Spies", or agents, will change color/clothing etc, and infiltrate the enemy's side.
 * Spies

Rapid Fire
The "T" shortcut button can be used, in conjunction with clicking, to rapid fire. This rapid fire only happens on your computer, so you won't win by doing it, it's just cool. There's also a funny thing, when you've got a few snowballs queued up, and you move, so the snowballs come from the ground.