I still remember when I was much younger, around 10 to 12 years old, when my uncle introduced me to 'The Ugly'. He told me, "This game has no good ending. I've tried everything, clicked everywhere, but it always ends in game over." Turns out, you can actually win the game lol.
Basically you find your house door open and no one is at home. There's a killer hiding in one of the rooms and you have to make sure you don't press the wrong option. If you do, he will come and get you.
Watching my uncle play it back then, it gave me the creeps
For a while, I had this fear that what happened in the game would happen to me in real life.
You can google and try it. It's fucked up.