House Rules

House Rules are a set of alternate rules that can be used while playing Uno. Three different types of house rules were officially released by Mattel, but many players have created their own rules. On this wiki, "House Rules" may be used to refer to any variation from the rules that is not in the classic game, such as stacking two or more cards of the same number or symbol during only one turn.

"Uno Out"

 * 1) When a player has only one card remaining, he or she must call "Uno Out" while placing it down, and the same rules of catching "Uno" apply. Catching "Uno" refers to when one player forgets to say "Uno" and another player points this out before the next player has begun his or her turn.