"Good Night!" is the Game Over term in Luigi's Mansion, given to the player when Luigi runs out of HP. During this term, when Luigi takes a lot of damage until his HP reaches zero, he will end up fainting and lying down on the ground shivering frightfully like as if he was dead or unconscious. When the Game Over term is over, the game will be taken back to the title screen. When the player loses, his/her score will reset back to last saved score. There will be music once the "Good Night!" screen appears.
The beta game over screen shows Luigi (Depressed) in the front of the mansion, and lightning strikes, however "Good Night!" does not appear. (people found this screen too scary)
The music that is heard when the Good Night screen pops up:https://www.youtube.com/watch?v=4f5qw22nOEk
- Strangely enough, Luigi's eyes are still opened and he can still blink when he lies on the floor.