Rock Paper Scissors
Play against the computer — classic or Lizard Spock variant.
Frequently Asked Questions
What is the optimal strategy for Rock Paper Scissors?▼
Against a truly random opponent, no strategy wins more than 1/3 of the time. But humans aren't random: (1) Beginners often play Rock first. (2) After a loss, players often switch to the thing that just beat them. (3) After a win, players often repeat their winning move. (4) Players rarely play the same choice 3 times in a row. Advanced players read these patterns and counter them.
What are the rules for Rock Paper Scissors Lizard Spock?▼
Invented by Sam Kass, popularized by The Big Bang Theory. Rules: Scissors cuts Paper, Paper covers Rock, Rock crushes Lizard, Lizard poisons Spock, Spock smashes Scissors, Scissors decapitates Lizard, Lizard eats Paper, Paper disproves Spock, Spock vaporizes Rock, Rock crushes Scissors. Each choice beats two others and loses to two others, creating balanced 5-way symmetry.