Light Switches (proposed idea)
one of the mechanic has to be light switches. It pisses me off to no end that some of the horror game forces the atmosphere by having dark rooms but clearly there is lights.
An idea is that you can turn on or off ALL the lights in every room. However, if there is "something" in the room, the lights will flicker.
The incentive to turn off the lights is that if the lights flicker too much, the light bulb will burst, making the room perma dark for the rest of the game and you wouldn't be able to see anything. This can affect future runs too since the lights are not replaced.
Throughout the game, it will thunder and rain, making the perma dark rooms light up for a second or two so that players can see in the room, but it will not be under their control.