If the game freezes, just click inside it (games can get unresponsive if you click elsewhere on the page).
Christmas is fast approaching and Santa's elves have lent a hand to ensure the Christmas post is delivered on time. Get the letters into the elvespost van as fast as you can, then catch the parcels they throw back. Careful not to let any of them hit the ground!
Use Arrow keys to move.
Space bar to throw mail.