✊ Rock Paper Scissors

Rock Paper Scissors is the world's most widely known instant decision game. Though seemingly simple, it is also a strategy game where psychology and pattern reading matter. This tool offers computer matches, multi-round play, win rate statistics, and Korea's unique "Muk-Jji-Ppa" mode for deeper enjoyment.

Muk-Jji-Ppa is a Korean extended version where you first play regular RPS to determine the "attacker." If the attacker matches their opponent's choice, they win; if the defender matches, the attack role switches. This advanced version requires quick judgment and psychological reads, making it far more thrilling than standard RPS.

The computer's choice is completely random, so long-term win rates for each choice are equal (theoretically 33.3% each for win/draw/lose). However, humans unconsciously create patterns, and this tool lets you analyze your own selection tendencies. Real-time win rates and records are displayed for instant game flow assessment.

Pro tip: To win RPS against friends, reading their patterns is key. People tend to repeat their choice after losing and change after winning. Practice various strategies against the computer. Setting rules like best-of-3 or best-of-5 increases the influence of skill over pure luck.