Put you in a completely white room with a chair hidden and hide speakers constantly playing this on repeat and once you get used to it at random times creepy sounds will play through the speakers driving you slowly insane and after 2-5 days of that suddenly a gun appears and when you pick it up through the speakers I say there is 1 bullet chose wisely I leave the building and you are forever trapped in the room getting food and water
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It would be more effective if you put them in a completely white room with no sounds at all and no interactions with humans or time killing devices m8