Micro Tools
Advertisement

Rock Paper Scissors

Play rock paper scissors against the computer in your browser, with live score tracking.

Rock paper scissors

Pick your move. The computer picks at random.

Score: you 0 - 0 computer · draws 0

Last round
-

Choose a move to play the first round.

Advertisement

How the computer chooses

The computer picks uniformly at random among rock, paper and scissors using the browser's random number generator, so no pattern or strategy can exploit it. Your score, the computer score and draws are tallied live as you play.

The classic rules

Rock crushes scissors, scissors cut paper and paper covers rock. Identical moves are a draw and the round is replayed. The game is a pure chance matchup, which is exactly why it settles disputes fairly.

Related tools

Mortgage calculatorMonthly cost with taxes, insurance, PMI and payoff schedule. Loan calculatorMonthly payment and interest for auto and personal loans. Compound interestSee how savings grow with compound interest.

Rock Paper Scissors FAQs

Is the computer really random?
Yes, it picks each move with equal one third probability using Math.random. There is no pattern to learn or exploit.
What are the rules of rock paper scissors?
Rock beats scissors, scissors beat paper, paper beats rock. Same moves tie. The result panel explains each round's outcome.
Can I play best of 5?
Play as many rounds as you like and watch the running score. First to 3 round wins takes a best of 5 series.
Why is rock paper scissors used for decisions?
It is fast, fair and needs no equipment. Random play gives each side an equal chance, which is why it settles everything from kickoffs to chores.
Does going first give an advantage?
Not here, since both moves are chosen simultaneously. Against humans, some players favor rock on the first throw, but the computer has no such habit.
Advertisement