UNO House Rules card game lets players make up their own rules while the game is played. All rules force players to 'do' something -- 'Go moo', 'Stand up', 'Touch their nose' -- and the last player who does it must draw a card. There can be as many as 5 rules going at once. The 'Game Changer' card is the only way to change an existing rule. Players still have to yell 'UNO' when down to one card. Makes a great gift to add a new dimension to family nights, game nights and parties.