Santa's helpers are letting their hair down and have challenged you to a snow ball fight. Score as many splat points as you can before you run out of snowballs (ammo) or time runs out.
Aim your shot using the mouse to move the cross-hair, then left click to throw a snowball. Splat the Santas quickly before they splat you and avoid splatting your friend, the penguin. Keep an eye on the time, ammo and your 'elf bar. To increase these hit Santa's Sleigh and then a present to gain a random bonus. Good luck!