Deal all cards evenly to all players
Choose a player to start
The first player places one or more cards face down and says the rank they are claiming
The claimed rank must follow the turn order if using a fixed sequence of ranks
The next player must place their cards face down and announce the next rank in the sequence
Players may lie about the cards they play
Any player may call “BS” if they think the previous player lied
Reveal the played cards when “BS” is called
If the player lied, they take the entire pile
If the player told the truth, the caller takes the entire pile
The player who takes the pile starts the next round
Continue until one player has no cards left
The first player to get rid of all cards wins