Rock Paper Scissors

What this tool does

Rock Paper Scissors lets you play the classic hand game against a fully random computer opponent, each round an independent 1-in-3 chance with no exploitable pattern, tracking a running win/tie/loss tally.

Rock Paper Scissors is the universally familiar hand game: rock beats scissors, scissors beats paper, paper beats rock, a simple rule set that still makes for an engaging quick match against an opponent.

This version plays you against a fully random computer opponent, each round is an independent, unpredictable 1-in-3 chance regardless of your or its previous picks, with a running score tracked across rounds.

How to use Rock Paper Scissors

1. Click rock, paper, or scissors.
2. The computer picks randomly at the same moment.
3. See whether you won, lost, or tied that round.
4. Your running win/tie/loss score is tracked across rounds.

Tips for better results

• The computer’s pick is genuinely random every round, there’s no pattern, bias, or memory of your previous picks to exploit, each round is a fresh, independent 1-in-3 chance.
• Over many rounds against a truly random opponent, the long-run expected outcome converges toward roughly equal wins, losses, and ties, any short-term streak is just normal random variance.
• Click "Reset scores" anytime to start a fresh running tally without reloading the page.
• There’s no actual winning strategy against a uniformly random opponent, each of your three choices has exactly the same expected outcome.

Common use cases

• A quick, familiar game for a short break.
• Settling a lighthearted decision against a genuinely random opponent.
• Tracking a running score across many rounds just for fun.
• A simple, no-setup two-choice game for players of any age.

Common mistakes to avoid

• Trying to find a pattern in the computer’s picks to exploit, each pick is independently random, there’s no sequence, bias, or memory effect to detect or counter.
• Reading meaning into a short winning or losing streak, with a fully random opponent, streaks are expected normal variance over enough rounds, not a sign of any actual pattern.
• Expecting one of the three choices to be statistically "better" against this opponent, since the computer picks uniformly at random, all three choices have identical expected outcomes.