Here are a few of them that I have seen:
- Draw 2 chain: If a draw 2 card is played against you and you have a draw 2 card in your hand, you can play it and say to the next person "draw 4." Again, if the next player also has a draw 2 in his hand, that player can play his draw 2 instead of drawing and pass a draw 6 onto the next player. This continues until a player cannot chain another draw 2 and is forced to draw all the cards for the draw 2s played.
- Keep the game going hint: After a player calls Uno, on the turn before his, the player about to play his card shows it to the player that called Uno. The person who called Uno must then tell that player if he can play on the card shown.
- Jess Wins: This is an extension of the above house rule. If Jess has shown all of her playable cards and Jason has told her that he can play on all of them, Jess is allowed to play her entire hand and call out "I win", ending the game in her favor. This may sound unfair, but it keeps the mood light as Jason would usually win 75%+ of games without this rule in place. If ever Jason attempts to use this rule, he is called a cheater. (Go figure!)
- Drop In Play: In this house rule, if you have a card of matching value of the card up, you can play it if you say "Drop In" when you do, even if it is not your turn. Wild cards cannot be 'dropped in'.
- Pirate Uno: This variant I found online and looks fun for large groups, but since Jess and I usually play with just the 2 of us, we have not even tried it. It uses a few house rules including Drop In Play and Draw 2 chains. Additional House rules included are as follows:
- Whenever a player plays an 8, he may trade hands with a player of his choice
- Whenever a 0 is played, all players pass their hands in the direction of play.
- Players are encouraged to say 'arrr' and other pirate phrases as often as possible
- Cheating is encouraged, but if you are caught, you must draw 2 cards. Examples of cheating are as follows, but not limited to:
- Looking at other players' hands
- Playing cards when it isn't your turn
- Playing more than one card on your turn
- Playing the wrong color card
- Drawing the wrong number of cards after a Draw 2 chain
- Not passing your entire hand (holding onto that wild card)
- Hiding cards you don't want (like under the table or up your sleeve)
- Not saying Uno when you are supposed to and saying Uno when you don't need to
Regardless of how you play Uno, it is a great game for the whole family and all will enjoy it.