Hide And Boo Seek

Hide and Boo Seek is a minigame in Super Mario 64 DS, unlocked by catching a Yellow Rabbit. Oddly, it includes Luigi instead of Yoshi. This minigame reappears in New Super Mario Bros.

Minigame
"Rub the Touch Screen where the Boos are hiding! For the first 15 levels, you get 3 seconds to find them. After that, you only get 2 seconds."

In the intro, the player can see several Boos, then the lights will turn off, and they will disappear. They will then need to use the stylus to look around the area on the touch screen and find the Boos in 3 seconds. If all Boos were found, the player proceeds to the next level, where more Boos appear. After the 15th level, the timer decreases to 2 seconds. If the player cannot find the Boos in the time limit, the player will receive a game over.