From the Super Mario Wiki, the Mario encyclopedia
Which Wiggler? is one of Yoshi's minigames in Super Mario 64 DS and a Puzzle minigame in New Super Mario Bros. The background music of this minigame is identical to that used when a character walks near a sleeping Piranha Plant.
One Wiggler is on the top screen, and many are on the bottom. The player must touch the Wiggler that matches the Wiggler on the top screen, and if correct, the player gains five seconds to the time limit and a new level begins. If the player picks the wrong Wiggler (when the Wiggler starts to move in Level 4, or if the player chooses the wrong one for a certain number of times), then it will get angry, turn red (or wake up), move faster than normal, and deduct 10 seconds from the player's time limit, who then cannot choose again for three seconds. The Wigglers start out sleeping for the first three levels, but they begin to move when the player progresses on to the fourth level, increasing the difficulty. The circles on the top Wiggler are the hint to finding the bottom one. The timer begins with 20 seconds and can go up to 50; the game will end if the player chooses the wrong Wiggler too many times or time runs out, which will make the Wiggler give an angry stare to the player when turned red, or the one that the player should have picked will have him woken up.
In multiplayer, the timer starts with 30 seconds, and no time is added or removed. Instead, players lose one point for the incorrect one and get one if it is correct. Once the timer reaches zero, the player with the most points wins.
Touch the Wiggler on the Touch Screen that matches the one on the top screen. Choose carefully, though; he has a terrible temper.
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