Rock Paper Scissors Simulator

Challenge the computer to a game of Rock Paper Scissors! Choose your weapon — Rock, Paper, or Scissors — set the number of rounds, and let the simulator run. You'll see your wins, losses, and ties tracked in real time, along with your win rate and a round-by-round breakdown.

Pick your weapon for this round.

How many rounds do you want to play? (1–1000)

Fixed: use the same move every round. Random: pick a random move each round.

Results

Your Win Rate

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Your Wins

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Computer Wins

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Ties

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Total Rounds Played

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Computer's Last Move

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Wins vs Losses vs Ties

Results Table

Frequently Asked Questions

How does the Rock Paper Scissors Simulator decide the computer's move?

The computer picks its move completely at random each round — Rock, Paper, or Scissors each have an equal 1-in-3 chance of being selected. This mirrors a fair, unpredictable opponent with no strategy.

What does the 'Always play my chosen move' strategy mean?

With the fixed strategy, the simulator uses your selected move (Rock, Paper, or Scissors) for every single round in the simulation. This lets you see how a consistent choice fares against a random opponent over many rounds.

What happens if I choose the 'Play randomly each round' strategy?

The simulator picks a random move for you each round, just like the computer does. This gives you a true random-vs-random outcome and is useful for seeing the expected long-run distribution of wins, losses, and ties.

What is the expected win rate in a fair game of Rock Paper Scissors?

In a perfectly random game, each player has roughly a 1-in-3 chance of winning any given round, a 1-in-3 chance of losing, and a 1-in-3 chance of tying. Over many rounds, win rates should converge toward approximately 33%.

Why do my results vary each time I simulate?

The computer's moves are generated randomly, so each simulation run produces a different sequence of outcomes. The more rounds you simulate, the closer your win rate will trend toward the theoretical 33% average.

Can I simulate a large number of rounds at once?

Yes — you can simulate up to 1,000 rounds in a single run. Larger simulations help smooth out variance and give you a clearer picture of the true statistical probabilities of each outcome.

Is there a winning strategy for Rock Paper Scissors?

Against a truly random opponent (like this simulator), no strategy can guarantee a better-than-33% win rate over the long run. However, against human opponents, psychological patterns can sometimes be exploited — players often unconsciously favor certain moves.

What does the round-by-round table show?

The table lists each round with your move, the computer's move, and whether you won, lost, or tied that round. It's a detailed record of every matchup across the full simulation.

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