"Quickly determine which signs the mii character in the center is holding up. Raise a different sign! Try to clear 100 rounds."
Hold the Wii Remote horizontally. Choose from the following buttons: A,1, and 2.
Snap Judgement is a minigame where you have to press either the A, 1, or 2 button different from the purple Mii in the middle. Unlike the 4-player version, instead of 10 rounds, it goes up to 100 rounds and the player is disqualified on the first mistake he/she makes.