Skull is the essence of bluffing, a game where everything is played in the players' minds.

Each player plays a card face down, then each player takes turns adding another card - until someone feels safe enough to say they can turn over some cards face up and only get roses. Other players can then outbid him and say that they can turn over even more face-up cards.

The highest bidder must then turn over that number of cards face up, starting with his own cards. If he only shows roses, he wins; if he reveals a skull, he loses and discards one of his cards. Two successful challenges wins the game.

Skull & Roses is not a game of luck; it is a game of poker face and meeting eyes.