Mao (card Game)
Mao (or Mau) is a card game of the shedding family, in which the aim is to get rid of all of the cards in hand without breaking certain unspoken rules. The game is from a subset of the Stops family, and is similar in structure to the card game Uno or Crazy Eights.
The game forbids its players from explaining the rules, and new players are often told only "the only rule you may be told is this one." The ultimate goal of the game is to be the first player to get rid of all the cards in their hand. Specifics are discovered through trial and error. A player who breaks a rule is penalized by being given an additional card from the deck. The person giving the penalty must state what the incorrect action was, without explaining the rule that was broken.
There are many variants of Mao in existence. While beginners sometimes assume that the dealer (sometimes called the "Chairman", the "Mao" or the "Grand Master") and other experienced players are simply making up possibly inconsistent rules (as in the game Mornington Crescent), the rules of Mao are consistent within each game and can be followed correctly.
Read more about Mao (card Game): History, Rules of Mao