Hey, I was watching old movies and thought of a new game. Remember "Pirates of the Carribean: dead man's chest"? There's a cut where Davy Jones, Bootstrap Bill and William Turner play a dice game. However it needs some modifications, since it's a multiplayer game. For everyone umfamiliar with the movie, here are the rules:
=> All players roll their dice (number of dice is negotiable, but let's say 4-6 dice)
=> Players see only their own set of dice (other dice are hidden under other player's cup)
=> One of the players declares a number of dice with same number of dots on it (like 7 two's, or 10 fives - meaning that, in his opinion, there are 10 dice on the entire table, that have five as a result) He can declare a true number of dice, but isn't obliged to do so.
=> Other players raise their bids / declare higher numbers, which means they declare higher number of dice with the same number ("10 fives" is followed by "11 fives"), or the same number of dice but higher number on those dice ("10 fives" is followed by "10 sixes")
=> Declarations must be consecutively higher (it is forbidden to declare "4 ones", or "10 fours", or "9 fives" if "10 fives" has been declared already)
=> Since (using the 5-dice per player variant and 3 players) there cannot be more than 15 dice of the same number, as the game goes on the probability that the other player made a false declaration is raising, a player, instead of his declaration, may accuse his opponent of cheating.
=> The accusation ends the game immediately and the dice are revealed. If the accusation was correct (opponent declared 11 ones, but there were only 9 ones on the table) the liar loses the game, and the accusing player wins. But if the accusation was incorrect (there were 11, or more ones on the table) the accusing player loses, and the accused player wins.

My modification:

=> To make the game suitable for 2 players I think that some dice should be visible for both players, so a player sees his own dice, the dice on the table, but doesn't see his opponent's dice