Editing Hide and Boo Seek

|time=3 seconds (first 15 levels)<br>2 seconds (after level 15)<br>15 seconds (Vs. Battle) (''New Super Mario Bros.'')

Luigi must use his [[flashlight]] to find the [[Boo]]s in the mansion of [[Big Boo's Haunt]]. The player must use the {{button|ds|stylus}} stylus as a flashlight. In the intro, the player sees the Boos, which follow basic physics, bouncing off walls and each other at angles relevant to the angle at which they hit them. By observing the Boos at the beginning, the player can predict where they end up. The lights then turn off, and the player then must find the Boos in the dark in three seconds by rubbing the Touch Screen with the stylus. If the player finds all of the Boos, the next level starts, where more Boos are found. After level fifteen, the amount of time gets reduced by one second. If the player cannot find all of the Boos in a certain amount of time, they lose the minigame and get a [[Game Over]].

In the minigame's multiplayer version in ''New Super Mario Bros.'', there are more players and more Boos. Players have fifteen seconds to get as many Boos as possible. When all of the Boos are found, all of the Boos are counted and a new round begins. When the timer reaches zero, all of the Boos that have been found are counted, and the player who has the most wins.

|Jap=テレサのくらやみスイッチ

|JapR=Teresa no Kurayami Suitchi

|JapM=Boo's Black-out Switch