Moon * Fish * Ocean is a Zen hand game for one, two, or three players. In the strictest Zen interpretation, the game is played by only one person, with one hand, as a koan (a paradoxical puzzle to trigger enlightenment).
Easy to learn and highly rewarding, every game communicates a Zen poem through sign language. That’s because in Buddhism, moonlight symbolizes enlightenment, water symbolizes self-nature, and fish symbolize living beings (K’uan Y Lu, Ch’an and Zen Teaching, 1960).
A less poetic, secular version of Moon * Fish * Ocean is popularly known as “Rock, Paper, Scissors.”