Dudo (Spanish for I doubt), also known as Cacho, Pico, Perudo, Liar's Dice, Cachito or Dadinho is a popular dice game played in South America. It is a more specific version of a family of games collectively called Liar's Dice, which has many forms and variants. This game can be played by two or more players and consists of guessing how many dice, placed under cups, there are on the table showing a certain number. The player who loses a round loses one of their dice. The last player to still have dice is the winner. Game play Each player starts having five dice and a cup, which is used for shaking the dice and concealing the dice from the other players. Players roll a die in order, to determine where and in what order they sit. Highest first, then next lowest and so on. In the event of a tie between 2 players, they simply re-roll until one gains a higher score. After deciding who starts the game (this can be done by making each player roll one die, for example), the players shake their dice in their cups, and then each player looks at their own dice, keeping their dice concealed from other players. Then, the first player makes a bid about how many dice of a certain value are showing among all players, at a minimum. Aces (dice showing a one) are wild, meaning that they count as every number. For example, a bid of "five threes" is a claim that between all players, there are at least five dice showing a three or an ace. The player challenges the next player (moving clockwise) to raise the bid or call dudo to end the round. Raise also known as "bid" in most versions, a player can increase the quantity of dice (e.g. from "five threes" to "six threes") or the die number (e.g. "five threes" to "five sixes") or both. If a player increases the quantity, they can choose any number e.g. a bid may increase from "five threes" to "six twos". Bidding aces a player who wishes to bid aces can halve the quantity of dice, rounding upwards. For instance, if the current bid is "five threes" then the next player would have to bid at least three aces. If the current bid is aces, the next player can call dudo or increase the quantity (e.g.