Rock Paper Scissors in Japanese: Janken
The country that perfected the game, and the chant the whole world half-remembers.
What Is Rock Paper Scissors Called in Japan?
In Japanese, Rock Paper Scissors is janken (じゃんけん), and a round of it is started with the chant "jan-ken-pon!" (じゃんけんぽん) — you throw your gesture on "pon." If you've ever heard the game called "jan-ken-pon" in English, that's the chant doing the traveling, not the name.
This isn't a quaint localization. Japan is where the game reached its modern form: the rock-paper-scissors triad standardized there in the 19th century before spreading worldwide in the early 20th — the full journey is in our origins of Rock Paper Scissors guide.
The Three Hands in Japanese
- Guu (グー) — rock. A closed fist; the name mimics the sound-feel of squeezing your hand shut.
- Choki (チョキ) — scissors. Index and middle finger out; named for the snip-snip sound scissors make.
- Paa (パー) — paper. An open hand; the sound of a hand flying open.
Notice these aren't the words for "rock," "scissors," and "paper" — they're onomatopoeia. The hands are named for how they feel, which is arguably better naming than the English got.
The Full Chant Ritual
A proper game of janken has a script, and everyone in Japan knows it:
- "Saisho wa guu" (最初はグー) — "starting with rock." Both players pump a fist on the beat to synchronize. This is Japan's version of the priming convention WRPSA rules formalize.
- "Jan-ken-pon!" — throw your gesture on "pon," simultaneously.
- "Aiko desho!" (あいこでしょ) — "it's a tie, right?" On a tie, this chant replays the round immediately, throwing on "sho," and repeats until someone wins. No dithering, no re-priming. It's an elegant tie-break loop.
Janken Runs Daily Life in Japan
In most countries, Rock Paper Scissors settles playground disputes. In Japan, janken is closer to social infrastructure: it decides who goes first, who gets the last piece, who does the chore, batting order in sandlot baseball, and even outcomes on prime-time TV. Where an American might flip a coin, a Japanese group of any age throws janken — instantly, without discussion, and the result is accepted as final. It's the purest expression of what makes the game special: a provably fair decision that takes two seconds.
What the Rest of the World Calls It
The game has a passport full of names:
- Japan — janken (じゃんけん)
- Korea — kai bai bo (가위바위보, literally "scissors rock cloth")
- France — pierre-feuille-ciseaux ("stone-leaf-scissors")
- Germany — Schere, Stein, Papier ("scissors, stone, paper")
- Spanish-speaking countries — piedra, papel o tijera
- Italy — morra cinese ("Chinese morra")
- Philippines — bato-bato-pik
- United States (regional) — roshambo, the West Coast name with a famously murky origin story.
Different syllables, same three-way standoff. Whatever you call it, the official rules are the same — and if you want to test your janken against the world, you can play rock paper scissors online against real opponents right now.