The Exposure Meter is a vital game mechanic in One Night at Flumpty's 2. It acts as a 'health bar' of sorts. If an antagonist looks into the room with the light still on, it will turn yellow, start shaking, and emit an 8-bit style chiptune sound used to give attention to the player to warn them that an antagonist is viewing them. A second long violent orchestral piece will play when an antagonist peeks into the room to alert the player of their presence.
The exposure meter will not go down as time passes, even if no antagonist has altered it recently.
The bar will stop filling as soon as the player turns off the light switch, although the antagonist in question will still linger for a short time after the light is turned off before wandering into another room. The Owl, however, will instantaneously kill the player if the corresponding vent door he is traversing isn't closed, regardless of the exposure meter. Golden Flumpty does not fill the exposure meter when he is in the room but can still pose a threat if the player stares at him for too long. If the Redman manages to crash the laptop, he will not fill the exposure meter in anyway and will kill the player if they close the laptop.
Trivia
- The mechanic came from a dream Jonochrome had. It was a Super Mario Sunshine 2 dream, where when an enemy saw him, a meter at the bottom right of the screen filled up. If the bar reached max, all the enemies in the area attacked.