Game rules reference:

1、 Brand introduction

     共有108 CARDS + 4 blank cards，按颜色可分为两类
    （1） Black card (referred to as black card, named because of the black around the face of the card)包括
     变色牌（Wild）4张，也称万用牌。罚四牌（Wild Draw 4）4张。也称王牌、抽四张，属罚牌，也可按是否罚玩家起牌而分为罚牌和非罚牌两类，罚牌就只有罚四牌和罚二牌两种。
    （2） Color cards: there are 25 red, yellow, blue and green colors,包括：
          1.数字牌：“0”1张，“1”至“9”各2张。
          2.功能牌：包括阻挡牌（Skip）2张，也称跳过牌。反转牌（Reverse）2张，罚二牌（Draw 2，也称抽二张）2张（属罚牌）。

2、 Win or lose

&This game is suitable for 2-10 people to play, but the fun of two people can't be compared with that of many people. The more people there are, the more & quot; riotous & quot;. Each player has seven cards at the beginning of each set, and the first card is given to the dealer. (whether to deal or to play, the player is at his own discretion) (the remaining cards are stacked in a pile with the back facing up, which is called the library, and there are also bid piles). According to the rules, the player who finishes the card first is the winner of the game. The loser is scored according to the cards he hasn't played. If the winner's last card is a penalty card, or the penalty card is transferred to the next player, the next player must take the penalty card and then calculate the loss points.
&The first method is to let the winner of the stock market sit in the market. Method two: randomly determine.
&Method 1: each player touches a card, and the player with the largest number will be in the shop. If he touches a non number card, he will be counted by & quo; 0 & quo. When many people touch the maximum number, these people touch again, until the decision maker. Method two: randomly determine.
&The card face scores are as follows: number cards & mdash; score according to the number of cards; function cards & mdash; 20 points; black cards & mdash; 50 points.
When the cards in the library have been used up and the winner has not yet been decided, the discarded cards (except the last one) can be shuffled and used as the library to continue the game. You can also & quot; yellow card & quot; to give up the game. When you have only one card left in your hand (counting from the moment the card falls on the scrap pile), you have to shout (UNO & rdquo; or & quot; Oolong & quot;) immediately after you play a card. If other players shout out the UNO before you, you will be fined 2 cards. If you don't shout, no one else finds out, and your next player plays a card, you don't have to be punished. If someone calls the wrong uno, he will be fined 2 cards. (the process of getting the top card of the library into one's own card is called playing cards, and there are also those called touching cards and drawing cards)

    Competition system of multi game
     通常玩家不会只玩一盘，一般以玩到尽兴为止，这里介绍几种赛制。
     1.筹码制：输家按输分将筹码给赢家（也可计分，只是手工计分较为麻烦），多盘累计，以筹码多少论胜负。
     2.得分制：输家的输分之和为赢家得分，多盘累计，达到或超过事先约定的分值（如500分），则以得分最高者为赢家。
     3.输分制：只计输家的输分，多盘累计，达到或超过事先约定的分值（如500分），则以输分最多者为输家。

3、 Playing rules

&From the library, a card (called the lead card, also known as the first card) is opened and the card is played clockwise (that is, the player to the left of the dealer plays first). The lead card is equivalent to the card played by the dealer (that is, it can be regarded as the card of the next house). If it is a black card, the color should be determined by the dealer. There is also an agreement to insert the card into the library or enter the discarded card stack to turn the lead card again when the lead card is a penalty of four cards.

&If the card played by the previous player is a number card, the next player can play the related card (the related card refers to the card played by the previous player, either with the same color or pattern & mdash; the number can also be seen as a special pattern & mdash; & mdash; the same card. Black cards are not related cards) or black cards. For example, if the master gives a yellow 5, the next player can play: ① any yellow card; ② any color & quot; ③ black card.
&2. If the card played by the previous player is a blocking card, the next player will be blocked and the next player will follow the card. The follower may play the related card or black card. For example, if the previous player plays a red blocking card, the player sitting next to the previous house can't follow the card, and then the next one can play: ① any red card; ② any color blocking card; ③ black card.
&3. If the card played by the previous player is a reverse card, change the direction of the card, and the player with the card can play the related card or black card. For example, if the player on the right should follow the card, the player on the left should follow the card. The player with the card can play: ① any blue card; ② any color reversal card; ③ black card.
&4. When playing a color changing card, you should specify the color of the card. The follower can only play the color card or black card. For example, if the upper house is designated with green, the next one can play: ① any green card; ② black card.
In the above circumstances, if the player with the card has no card to play, he should play 1 card. If you have a card in your hand, you can also choose not to play a card (the purpose is to confuse others, but this is risky). If you play a card that conforms to the rules of playing, you can play the card immediately. If you play a card that is not just played, take back the card and start with 3 penalties. In order to show that the card you played is really just played, please do not insert this card into other cards in your hand, but play directly, otherwise other players have the right to ask you to show your cards to everyone. If the card played does not conform to the rules of playing, the next player will follow the card that has just been played.
&5. If the card played by the previous player is a two card penalty, the next player can only play: ① block card with the same color, transfer the penalty object to the next house; ② reverse card with the same color, turn the penalty object back to the upper house; ③ for the second card of any color, transfer the penalty object to the next house, and add two penalty cards. Otherwise, play 2 cards. If the penalty card is accumulated, the accumulated penalty card shall be taken and the card cannot be played immediately. During the period from the second penalty to the final penalty, the number card and black card can not be played, but only the function card. Until someone is punished, the number card and black card can be played according to the rules.
For example, when the card playing direction is counter clockwise, 0 player will give a blue penalty card, and the 1 player on the right can only play
& nbsp; & nbsp; & nbsp; & nbsp; ① blue blocking card, and the penalty object will be transferred to the second player on the right of 1 player & mdash; & mdash; 3 player. And 3 players can only play: A. blue reversal card; B. any color blocking card; C. blue penalty two cards. Otherwise, you will play 2 cards;
@ @ and the blue reversal card will make 0 player punished. 0 players can only play: A. blue block card; B. any color reversal card; C. blue penalty two cards. Otherwise, you will play 2 cards;
@ any color will be fined two cards, and the penalty object will be transferred to the first player on the right of player 1, and 2 cards will be added. However, 2 players can only play: A. block cards or reversal cards with the same color as those of 1 player; B. two cards of any color (at this time, the penalty cards have accumulated to 6). Otherwise, four cards will be played.
If a player does not meet any of the requirements of (1) or (2) or (3), he will be fined 2 cards.
&6. If the penalty card is accumulated, the accumulated penalty card should be played, and not immediately. If there are four cards in a row, the player with the fifth card will be fined 16 cards.
Once someone is punished, the penalty process will be over, and then the family of the punished person will follow the color of the card (or the designated color) just played.

4、 Precautions

&(1) no player is allowed to make any suggestion of playing cards that seem to be true or false to other players, or he will be punished (e.g., four cards).
&(2) after playing cards or playing cards, the next player should not play cards immediately (including the first card in each set), wait for a short time, observe everyone's expression (about 1-2 seconds) and play again, leaving time for people to play cards after playing cards, or yell for Yunuo, or grab cards.
&(3) players must disclose the number of cards they hold (especially when there are not many cards in their hands), and the licensing method should be to hold the cards separately in a fan shape so that others can observe them. Do not fold cards together for a long time.
&(4) the discarded cards should be stacked together in the order of playing. All players are not allowed to look at the scrapped cards unless some player questions whether others play according to the regulations and flip the limited discarded cards.

5、 Special agreement

&Some players will feel that more rules can increase the complexity and stimulation of the game. Some players will find the rules too complicated and tired to play. The following agreement is for the player's reference. Whether or not to adopt it is up to the player to discuss.
    （1） The limited play of trump card
     只有当手中没有与上家所出的牌相同颜色的牌时，才可以出王牌。
若被罚起牌的玩家对出王牌的玩家是否按此规定出牌产生怀疑时，可要求出王牌的玩家向其展示手中的牌。若没有违规，则提出质疑者除被正常罚4张牌外，还要加罚2张牌。若确实违规，则违规者被罚起4张牌，提出质疑者不被罚牌，并可按出王牌的玩家指定的颜色跟牌。
若对连续出王牌的多人提出质疑而被证实他人没有违规的，按被质疑的人数算加罚的牌数（每人2张）。若有一人违规，则违规者承担所有的罚牌，若是多人违规，则违规者分摊所有的罚牌。
    （2） Complete card grabbing
     当任何一位玩家所出的色牌，与你手中的某一张牌完全一样时，你可以不按出牌顺序抢先出这张牌，你的下家继续跟牌。（由于完全抢牌与麻将牌中的碰牌类似，所以也有人称之为碰牌）
当玩家出了一张色牌后手中仍有一张和所出的牌完全一样的牌时（即手中有2张完全一样的色牌），可将这张牌也打出（即手中有2张完全一样的色牌可同时打出，相当于自己抢了自己的牌）。
若同时打出的2张完全一样的色牌是：1.阻挡牌，则只阻挡一位玩家；2.反转牌，则跟牌方向不变；3.罚二牌，则下家要被罚4张。
     当玩家手中只剩2张完全一样的色牌时，也必须喊优诺，否则不可同时出这2张牌。
    （3） Penalty card for mistakes
     若所有玩家都比较熟练了，为惩罚注意力不集中的玩家，可采用出错罚牌的约定。即当你打出不合规定的牌时，除了要把打出的牌收回外，还要罚起1张牌，并不得立即出牌。
    （4） Seat exchange
     多盘游戏时，不宜一直保持固定的座次，可几盘后玩家之间互换座位，改变一下“照顾”与“被照顾”的关系。
    （5） Seeking peace and grabbing cards
     当你手中某几张同色数字牌的数字之和，刚好与某一玩家刚出的数字牌的数字相同且颜色一致，你可不按出牌顺序抢先出这几张牌。（也有不必对颜色作出要求的约定）你的下家可以对这几张牌中的任意一张跟牌。
若同时还采用了碰牌约定，只要有人有和你所出的这几张牌中的如何一张完全相同的牌时，就可抢牌。若多人都可抢牌时，则由先抢的人抢牌。为了达到先抢的目的，抢牌者可先喊“抢”，表示自己抢牌的意愿之后再出牌。若喊了“抢”又不抢，则罚起牌1张，后喊“抢”的玩家可实施抢牌。
求和抢牌可能会使抢牌者突然胜出，此时可不喊优诺。（也有只能在获胜时才可用求和抢牌的约定）
    （6） Numbers win
     要求功能牌和黑牌不能在最后出，即最后打出的牌必须是数字牌，否则只能起牌，不能出牌。
    （7） The trump card is big
     规定在罚二牌之后可以出王牌，罚牌数按牌面累计。
    （8） Team competition
     以每队相同的人数组队比赛。如4人可组两队，两人一队；6人可组两队（三人一队）或三队（两人一队）……队员座位要均匀隔开，将各自的得分或输分按队求和，即为该队的分值。
    （9） Game of two
     在2人游戏时，阻挡牌和反转牌的作用一样，就是出牌者可连续出牌。
    （10） & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; wild
     玩家打出Wild后，可任意选择以下3种功能之一：①变色；②看任一玩家的牌5秒钟；③和任一玩家换3张牌。
    （11） Play in 5 seconds
若玩家出牌时间超过5秒，要被罚，比如起1张牌。这种规定多半用于限制出牌太慢的玩家，除非有专用设备来帮助计时。