The usual Uno (including themed editions without new cards) rules - Players race to empty their hands and catch opposing players with cards left in theirs, which score points. In turns, players attempt to play a card by matching its color or number to the topmost card on the discard pile. If unable to play, players draw cards from the draw pile until they are able to place a card. Wild and special cards spice things up a bit. Additionally, when playing their penultimate card from their hand, players must shout 'UNO' or face a forfeit of drawing two further cards.
Based on the TV show The Simpson's Halloween Specials Treehouse of Horror.
WHAT MAKES IT DIFFERENT FROM TRADITIONAL UNO: 'Witchcraft Card - Can be played to counter a Draw 2 or Draw 4 card. Can also be used as a wild card.