Muk-jji-ppa

Muk-jji-ppa is a South Korean hand-gesture game played between two people as an escalating variant of rock-paper-scissors. A round begins with an ordinary rock-paper-scissors throw, and whoever wins becomes the attacker while the loser becomes the defender. The two then repeatedly show one of the same three hand signs in rhythm, with the attacker calling out a move just before displaying it. The defender loses the exchange, and the round, if their gesture matches the attacker's; otherwise the outcome of each throw can flip who attacks and who defends. The game's name is built from the Korean words for the three gestures, muk, jji and ppa. Accounts trace the idea behind Muk-jji-ppa to Japan, arriving in Korea after the Russo-Japanese War, ultimately descended from the older Chinese hand game janken.