Origins of Rock Paper Scissors

The Short Answer

No surviving source identifies one inventor of modern Rock Paper Scissors. A Chinese text written around 1600 retrospectively attributed an earlier hand game to the Han dynasty, and documented Japanese ken games later developed into janken. The modern three-gesture form emerged in Japan, but the exact chronology is not fully established.

Ancient China: Shoushiling

One important written source is Xie Zhaozhi’s Wuzazu, composed around 1600. It attributed a hand game called shoushiling to the Han dynasty. Because the statement was written many centuries later, it is evidence of an early modern historical tradition, not direct documentation from the Han period.

Chinese drinking games used simultaneous hand signs and penalties, but their gestures and rules varied. They belong to the broader ancestry of cyclic hand games; they should not be described as the modern game without qualification.

Japan: The Birth of Jan-Ken

Japan developed many ken games with cyclic relationships among animals or social roles. Sepp Linhart’s historical study documents this varied tradition. Modern janken emerged from that setting, but the surviving record does not supply one uncontested invention date.

• Mushi-ken: An early variant using a frog, a slug, and a snake. The frog beats the slug, the slug beats the snake, the snake beats the frog. Players made hand gestures representing each animal. A frog hand gesture. Just imagine that for a moment.
• Kitsune-ken: Another variant using a fox, a village headman, and a hunter. The fox bewitches the headman, the headman outranks the hunter, the hunter shoots the fox. The lore runs deep.
• Jan-ken: The final, simplified version using Rock, Paper, and Scissors. This is the form that became dominant because it turns out three things that everyone can mime with one hand is the sweet spot for a universal game.

Research describes janken as both a children’s game and a practical way to organize groups in Japan. Its modern cultural role is well documented; the precise path from earlier ken variants is less certain.

Global Spread: 20th Century

Western descriptions of the Japanese game appear in the early twentieth century. The sources establish growing visibility, but they do not prove one simple route by which every country adopted it.

• Early twentieth century: English-language publications described the Japanese game; a 1932 New York Times account described its use among Tokyo commuters.
• 2002: Contemporary reporting announced an international Rock Paper Scissors championship in Toronto, with a stated date, prize pool, and match format.

What About the Name "Roshambo"?

The origin of Roshambo remains unresolved. There is no historical evidence that the French general Rochambeau played or named the game, and the proposed phonetic connection to Japanese chants has no documented chain of transmission. The honest answer is uncertainty.

Nobody "Invented" It

Unlike sports with a documented founder, modern Rock Paper Scissors has no identified inventor. Related cyclic games changed across places and periods, and the evidence does not justify assigning the modern form to one person or one ancient date.

The modern rock, paper, and scissors form developed in Japan as janken and spread internationally in the early twentieth century. That is the strongest supported outline; narrower dates should be treated as provisional.

Timeline