UNO/House Rules
There are many house rules out there for UNO. This article will go over three of the most common ones.
Stacking
editWhen this house rule is being played Draw Two and Wild Draw Four cards are allowed to "stack" on each other, adding their penalties together.
When this house rule is being used and a player plays a Draw Two card, the next player in turn order may, if they have one, play a Draw Two of their own on top of the already-played Draw Two, with the result that the two cards' penalties will "stack" and add together. Then the stacked penalty is passed to the next player, who must play a Draw Two of their own or draw the total penalty number of cards.
Wild Draw Fours may be stacked in a similar manner, and Wild Draw Fours may be stacked on top of Draw Twos, but not vice versa.
7-0
editThis house rule effectively turns the 7 and 0 cards into action cards.
With this house rule, if a player plays a card with a 7 on it that player must choose another player and the two players exchange their hands. If via this exchange a player receives a hand of only one card they must still call "UNO" or risk drawing two penalty cards.
If a player plays a card with a 0 on it every player must pass their hand one player in the current direction of play.
Jump-In
editWith this house rule active, if a player encounters the situation where the card on top of the discard pile is exactly the same as a card in their hand, then the player may "jump-in" and play said matching card immediately without waiting for their turn. Gameplay then passes from them as normal.