Rock Paper Scissors
Play rock paper scissors against CPU or judge up to 10 players in a simultaneous match
Features
Opponent's hand is decided first
The opponent's hand is confirmed before you choose yours
Simultaneous play with up to 10 players
Automatic judging continues through draws until a winner is determined
3 ways to decide the outcome
Choose from: one winner, one loser, or group division
No registration needed, works in browser
Everything processed in-browser without sending hands or names
How to Use
Choose a game mode
Switch between CPU battle and group play using the tabs at the top
Make your move in CPU battle
View the opponent's concealed hand and press Rock, Scissors, or Paper
View results and record
Check win/loss/draw display and accumulated rounds and history
Set up group match
Enter number of players and names, then choose hand method and other options in advanced settings
Start and check results
Press "Start Rock Paper Scissors" to see the progress and final result
Use Cases
Quick game against CPU
Play continuous rounds and view win/loss/draw records
Selecting a representative organizer
Fairly choose one representative or penalty game participant, including people not present
Organizing results for large groups
Input actual hands played and organize wins/losses including draws
Deciding order via screen share
Decide order for everyone in an online call by showing the screen
Learning rock-paper-scissors relationships
For children or classroom learning, confirm the win/loss relationships of rock, scissors, and paper
Knowledge Base
What is the rock-paper-scissors cycle?
The rock-paper-scissors cycle is a relationship where rock beats scissors, scissors beats paper, and paper beats rock. Since no hand is always strongest, a draw occurs when all players throw the same hand or when all three hand types appear.
Why draws increase with more players
With 3 or more players throwing simultaneously, a draw occurs when all throw the same hand or when all three hand types appear. As the number of players increases, it becomes more likely all three types will appear, reducing the probability of a decisive result.
- 2-3 player case：Whether 2 or 3 players throw randomly, the probability of a draw is approximately 33.3% (one-third).
- 5 player case：When 5 players throw randomly, the probability of a draw is approximately 63.0%, making a decisive result less likely.
- 10 player case：When 10 players throw randomly, the probability of a draw is approximately 94.8%, making a decisive result in one round rare.
English name for rock paper scissors
Rock paper scissors is called "Rock Paper Scissors" in English, where rock corresponds to Rock, scissors to Scissors, and paper to Paper. The win/loss relationships are the same three-way cycle as Japanese rock paper scissors.
Safety and Privacy
Runs entirely in your browser
Your input data is processed only within your browser and is never sent externally.
Processing only in your browser
Hand choice, participant names, and results is processed entirely within your browser, and input data is not sent to any server.
Communications encrypted with HTTPS
Page loading is also encrypted by TLS, and content cannot be read by third parties.
No transmission to third parties
Input content is not sent to external services such as ad networks or trackers.
No automatic saving of results
Participant names and results and input suggestions are not stored on the server.
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Updates
- update #366
Added Rock-Paper-Scissors with CPU battle and up to 10-player simultaneous play
Featured Tools
RAKKOTOOLS is free to use!
Available free of charge for individuals and corporations, commercial and non-commercial use alike.No prior permission or usage application is required. Feel free to use it in various situations.
Use in streaming and videos
Use various tools such as lottery draws and raffles in live streams and videos.
Use in schools, work, and events
Can be used in various situations such as classes, team division, internal work, and events.
Introduction on Web, books, and SNS
Feel free to introduce it as a useful tool on web media, books, SNS, and other platforms.
Commercial use
Can be used for commercial purposes such as research, calculation, processing, and conversion in business and production.
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If using in streaming and videos
Link to RAKKOTOOLS in the description, or Mention or display that you are using RAKKOTOOLS in the stream or video.
Credit example for the description
Usage guidelinesYou are free to use it for normal purposes. However, use for purposes that violate laws, infringe on third-party rights, impose significant load on the service, or otherwise interfere with service operation is prohibited.
We do not guarantee the accuracy or completeness of information and calculation results obtained from each tool.
This notice is a translation of the original Japanese text. If there is any discrepancy between the translation and the original, the Japanese original takes precedence.