Blackout

The Blackout is an event in Luigi's Mansion. After Luigi defeats Boolossus and opens the door to Area 4, several bolts of lightning strike the mansion. This causes the power to go out, darkening every room, including ones Luigi has already completed, and allowing ghosts to wander freely. During the Blackout, set groups of ghosts appear in rooms, even replacing ones Luigi has not caught, including Portrait Ghosts. This can make the mansion difficult to navigate. Speedy Spirits and Gold Mice will reappear in the darkened rooms if Luigi had not captured them before, so the Blackout can be used to his advantage. Ghosts in a room respawn if Luigi captures all of them and reenters the room during the blackout. The only rooms without ghosts are the Foyer, the Bottom of the Well and the Breaker Room (though it is possible for the latter to have a Speedy Spirit if Luigi had not captured it prior to the Blackout), though they still go dark. Also, some previously accessible rooms lock up during the Blackout. They reopen after Luigi turns the lights back on. In order to turn the power back on, Luigi must find and capture Uncle Grimmly in the Wardrobe Room, causing a chest containing the key to the Breaker Room to appear. He can get a hint about this by talking to Professor E. Gadd in the Telephone Room. Luigi can use the key to enter the Breaker Room and pull a switch that restores the mansion. Rooms that Luigi had not previously completed stay dark except the Breaker Room, which lights up.

Ghosts
This list shows the different ghosts that appear during the Blackout and the rooms they are found in.
 * Parlor
 * 5 Gold Ghosts
 * Anteroom
 * 4 Gold Ghosts
 * 1 Purple Puncher
 * Wardrobe Room
 * Uncle Grimmly
 * Balcony (2F)
 * 2 Gold Ghosts
 * Study
 * 1 Red Grabbing Ghost
 * Master Bedroom
 * 2 Gold Ghosts
 * 3 Grabbing Ghosts
 * Nursery
 * 2 Gold Ghosts
 * 1 Purple Puncher
 * 1 Blue Twirler
 * Bathroom (1F)
 * 3 Temper Terrors
 * Ball Room
 * 5 Shy Guys
 * Storage Room
 * 2 Purple Punchers
 * 2 Grabbing Ghosts
 * Washroom (1F)
 * 1 Red Grabbing Ghost
 * Fortune-Teller's Room
 * 2 Purple Punchers
 * 1 Blue Twirler
 * Laundry Room
 * 3 Garbage Can Ghosts
 * Mirror Room
 * 6 Grabbing Ghosts
 * Butler's Room
 * 2 Gold Ghosts
 * 2 Flashes
 * Hidden Room
 * 1 Grabbing Ghost
 * 2 Blue Twirlers
 * Conservatory
 * 3 Gold Ghosts
 * 1 Purple Puncher
 * Dining Room
 * 1 Gold Ghost
 * 2 Garbage Can Ghosts
 * Kitchen
 * 1 Gold Ghost
 * 2 Purple Punchers
 * Boneyard
 * 3 Temper Terrors
 * Courtyard
 * Flying Fish
 * Rec Room
 * 2 Grabbing Ghosts
 * 3 Blue Twirlers
 * Nana's Room
 * 5 Purple Punchers
 * The Twins' Room
 * 2 Shy Guys
 * 2 Grabbing Ghosts
 * Billiards Room
 * 3 Gold Ghosts
 * 3 Grabbing Ghosts
 * Projection Room
 * 7 Purple Grabbing Ghosts
 * Astral Hall
 * 6 Shy Guys
 * Safari Room
 * 2 Gold Ghosts
 * 2 Grabbing Ghosts
 * Balcony (3F)
 * 2 Gold Ghosts
 * 2 Purple Punchers
 * 2 Blue Twirlers
 * Telephone Room
 * 1 Gold Ghost
 * 1 Purple Puncher
 * 1 Blue Twirler