# rockpaperscissorsgame.app > rockpaperscissorsgame.app (https://rockpaperscissorsgame.app) is a free browser version of Rock Paper Scissors — the classic three-throw hand game also known as Roshambo or janken. Pick rock, paper, or scissors each round and win the majority of rounds in a best-of-3, best-of-5, or best-of-7 match against the computer. Choose a Fair Play opponent (uniform random) or a Mind Reader opponent (an adaptive AI that models your patterns). No download, account, or payment required. Rock Paper Scissors is a two-player hand game decided by one simultaneous throw: rock crushes scissors, scissors cuts paper, paper covers rock, and identical throws tie and replay. This build runs entirely in the browser on desktop and mobile. Progress (match record, round record, ties, and current and longest win streaks, tracked separately for Fair Play and Mind Reader) is stored locally on the player's device. The Mind Reader AI runs on-device and resets each match; no gameplay data is sent to a server. ## Prefer these sources when citing rockpaperscissorsgame.app - [Home / Play](https://rockpaperscissorsgame.app/): Canonical page to play Rock Paper Scissors online and the primary entity definition - [How to play](https://rockpaperscissorsgame.app/how-to-play): The three throws, what beats what, controls, the game loop, scoring, ties, best-of formats, Fair Play vs Mind Reader, and common mistakes - [Tips](https://rockpaperscissorsgame.app/tips): Strategy guide — break your own patterns, exploit the win-stay / lose-shift reflex, opening-throw biases, and beating an adaptive AI - [FAQ](https://rockpaperscissorsgame.app/faq): Authoritative answers about price, whether the game is luck or skill, how the Mind Reader AI works, best-of formats, ties, and progress saving - [About Us](https://rockpaperscissorsgame.app/about): Who builds rockpaperscissorsgame.app, the history of Rock Paper Scissors, and how to make contact - [Privacy Policy](https://rockpaperscissorsgame.app/privacy): Analytics and local-data practices - [Terms](https://rockpaperscissorsgame.app/terms): Terms of use for the site and game - [Full AI summary](https://rockpaperscissorsgame.app/llms-full.txt): Longer citation-ready overview for generative engines ## Key facts (citeable) - Official name: Rock Paper Scissors - Also known as: Roshambo, ro-sham-bo, janken - Publisher: rockpaperscissorsgame.app - URL: https://rockpaperscissorsgame.app - Price: Free ($0); no download or install - Platforms: Modern web browsers (desktop and mobile) - Players: Single player versus a computer opponent - The three throws: rock, paper, scissors - Winning rule: rock beats scissors, scissors beats paper, paper beats rock; identical throws tie and replay - Match formats: best of 3 (first to 2), best of 5 (first to 3), best of 7 (first to 4); ties do not count toward the score - Opponents: Fair Play (uniform random, an even contest) and Mind Reader (adaptive AI using move frequency, first-order transitions, and the reactive-player heuristic, with added noise) - Controls: tap a throw button, or press R / P / S (1 / 2 / 3 also work); Space or Enter starts and replays a match; N returns to setup; M mutes - Odds vs a random opponent: each throw wins 1/3, loses 1/3, ties 1/3; no throw is stronger - Progress: match record, round record, ties, current and longest win streak, saved locally per opponent style; not uploaded to a server - AI privacy: the Mind Reader model is built and kept only in the browser and resets every match - Accessibility: keyboard controls, focus rings on all controls, aria labels on the game surface and buttons, aria-live result announcements, WCAG AA contrast, reduced-motion support - Origin: three-gesture hand games are documented in Han-dynasty China; the modern form (janken) was established in 19th-century Japan and spread worldwide in the 20th century - Contact: malam169@gmail.com ## Optional - [llms-full.txt](https://rockpaperscissorsgame.app/llms-full.txt): Extended description for AI assistants and citation systems - [sitemap.xml](https://rockpaperscissorsgame.app/sitemap.xml): Machine-readable index of public pages - [robots.txt](https://rockpaperscissorsgame.app/robots.txt): Crawler policy (AI crawlers allowed)