Rock Paper Scissors
Play Rock Paper Scissors against the computer. Pick your throw, see who wins, and track your running score - plus a Lizard-Spock mode.
- Free, no account
- No watermark
- No usage limit
About the Rock Paper Scissors
A lot of the Rock Paper Scissors games online are quietly built to beat you. They watch your last handful of throws, catch the pattern you don't know you have, and throw the counter, and the sharp ones win a lot more than they lose. This one is built on the opposite idea. The computer here throws blind. It picks with no idea what you chose and no memory of what you threw last round, because a tiebreaker only works if nobody, not even the machine, gets to lean on the scale.
So it's simple. Pick rock, paper, or scissors, the computer picks at the same moment, and you see both hands, who won, and a one line reason like "Rock crushes scissors." A scoreboard keeps your wins, losses, and ties until you clear it. Two modes: the classic three throws, or the five move Lizard-Spock version further down. No app, no sign-up, it all runs in your browser.
Most people use it to settle something small. Who does the dishes, who goes first, who has to make the awkward call. The loser picked their own hand, so they can't really complain, which is the whole reason it beats drawing straws.
How to use
- Pick a mode. Leave it on Classic for the standard three throws, or switch to Lizard-Spock for the five move version where every choice beats two others.
- Throw. Click Rock, Paper, or Scissors (plus Lizard or Spock in the bigger mode). Each button shows the name and the hand, so nobody has to remember which emoji is which.
- Read the result. Your hand and the computer's appear side by side with a plain verdict and a short reason. No arguing about who took the round.
- Watch the score. Wins, losses, and ties add up across every round, so you can run a quick best-of-three or grind out a hundred throws while you procrastinate.
- Reset when you want. Hit Reset score to wipe the totals. Switching modes clears the current round but keeps your score, so you can bounce between Classic and Lizard-Spock without losing your tally.
Genuinely random, and why that's the point
The computer is doing something plain: picking one throw uniformly at random, every round, and forgetting it immediately. It draws each pick from your browser's built-in cryptographic random generator, the kind security code relies on, so the odds are dead even. One in three per throw in Classic, one in five in Lizard-Spock. No drift, no favorite move, and it never slowly learns your habits.
That matters more than it sounds. Because the machine has no memory and never sees your move first, none of the mind games work on it. There's no rock bias to punish and no rhythm to catch. You're playing pure chance, which is exactly what you want when you're settling something and need a verdict neither side can call rigged.
It also means a losing streak is just a streak. Lose six in a row and the computer isn't reading you, you just hit the run of bad luck a fair coin hands out when it lands tails six times. Nothing is learning, nothing is stored, refresh the page and the score starts at zero.
The one trick that actually works (on people)
"It's random, there's no strategy" is the usual line, and against this computer it's true. Against another person it's dead wrong, because people are lousy at being random.
The most reliable tell in the game: people over-throw rock. Under pressure, or when they haven't thought about it, they lead with the fist far more than a third of the time. It feels strong and safe, so it's the reflex, especially for newer players. The counter is almost too easy, open with paper. You'll catch more first-round rocks than you'd believe.
That's the one worth carrying into a live game. There's a deeper layer under that. A win makes people want to run the same throw again, a loss makes them jump to a different one, and reading that chain is what tournament players live on. But it all evaporates against a random opponent. The computer has no habits to exploit, so save the paper move for a human across the table.
Rock-Paper-Scissors-Lizard-Spock
If three throws tie too often for your liking, the five move version fixes it. Rock-Paper-Scissors-Lizard-Spock adds Lizard (your hand as a little snapping mouth) and Spock (the split-finger Star Trek salute), and now every throw beats two others and loses to two others. Fewer ties, because there are five ways to disagree instead of three.
The loop, as five short lines:
- Rock crushes scissors and lizard.
- Paper covers rock and disproves Spock.
- Scissors cut paper and decapitate lizard.
- Lizard eats paper and poisons Spock.
- Spock smashes scissors and vaporizes rock.
Read them out loud once and they stick. Flip the tool to Lizard-Spock mode and you get the full five throw game against the computer, victory verbs and all.
Frequently asked questions
Who goes first, and is there an advantage to it?
Nobody goes first, that's the design. Both hands are supposed to come down together, which is what the "rock, paper, scissors, shoot" count is for in the live game. Against the computer you click your throw and its pick is generated the same instant, without peeking at yours, so there's no turn order and no first-mover edge to grab. Whoever picks the better hand wins, full stop.
If it's pure luck against a computer, why do I keep losing?
Short runs of bad luck look a lot like a rigged game, but they aren't. With even odds you'll hit losing streaks the same way a fair coin throws four tails in a row. In Classic it settles toward a third wins, a third losses, a third ties over enough rounds. Lizard-Spock does not, and that catches people out: every throw beats two and loses to two, so ties are rarer and it lands nearer 40 percent wins, 40 percent losses and 20 percent ties. If you've been bouncing between the two modes your scoreboard is counting both, so the tool says how many rounds came from each.
Is there a statistically best throw?
Not against a random opponent, every option wins, loses, and ties equally. Against people there's a wrinkle worth knowing: scissors is the least-thrown of the three, so a lot of players quietly under-defend against it. That won't help you here, where the computer has no leanings, but it's a decent edge in a live game once you've already burned the open-with-paper move.
Is Rock Paper Scissors actually a competitive sport?
Yes, more than you'd guess. There have been organized championships with real prize money and players who study opening throws and tells the way a poker pro reads a table. It sounds like a joke until you watch two good players go fifteen rounds and see how much reading of each other is going on. None of that applies to a random bot, but between two humans it's a genuine game of skill.
Where did the Lizard-Spock version come from?
It was designed by Sam Kass and Karen Bryla to cut down on ties between people who know each other and tend to think alike. More choices, less chance you both land on the same one. It got famous through the sitcom The Big Bang Theory, but the design came first, and the math holds up: five throws, each beating two others, still perfectly balanced.
Does my score save if I come back later?
No. The scoreboard lives only in the tab you're playing in and only while it's open. Nothing goes to a server, and closing or refreshing the page clears the totals. Play one round or a hundred, it all disappears when you leave, which is what you want from a throwaway tiebreaker. One small thing does get written to your device, and it isn't the game: every tool page here remembers that you opened it so the homepage can offer it back later. Your throws and your score are not part of that.