Bluff : Cards Game

Bluff is popular card game which also known as 420,Cheat or I Doubt.

Bluff is a card game where the players aim to get
rid of all of their cards. It is a game of deception, with cards being
played face-down and players being permitted to lie about the
cards they have played. A challenge is usually made by players
calling out the name of the game, and the loser of a challenge has
to pick up every card played so far.