Each player starts with a deck of cards that each feature one action: High Five, Egg Spin, Fish Bump, and Hoppy Salmon. When the game starts, everyone flips over the top card of their deck and calls out the action shown. When two players have a match, they celebrate by performing the action. (If you don't match anyone, you can wait or you can slide your top card to the bottom of your deck and reveal a new card.)
Each time a player celebrates a match, they discard that card. The first person to get rid of all their cards wins.