Showing posts from November, 2012


Rock-paper-scissors-lizard-Spock is a five-gesture expansion of the classic selection method game rock-paper-scissors. It operates on the same basic principle, but includes two additional weapons: the lizard (formed by the hand as a sock-puppet-like mouth) and Spock (formed by the Star TrekVulcan salute). This reduces the chances of a round ending in a tie. The game was invented by Sam Kass and Karen Bryla.

The game was mentioned in three episodes of The Big Bang Theory. According to an interview with Kass, the series producers did not ask for permission to use the game, but he was later referenced in an episode in the fifth season.

The rules of Rock-paper-scissors-lizard-Spock are:
Scissors cuts paperPaper covers rockRock crushes lizardLizard poisons SpockSpock smashes scissors Scissors decapitates lizard Lizard eats paper Paper disproves Spock Spock vaporizes rock Rock crushes scissors  There are ten possible pairings of the five gestures; each gesture beats two of the other g…