Now, you have to know this is going to be on the list. That was how it all started (and launched the careers of many youtubers). At the beginning of the game, you lose your memory (aka amnesia), and you have to search the building with a lamp in your hand. The only problem is the monster is chasing you. Your only defense is to hide in the closet, avoid the water, and escape the monsters by any means necessary. It's a stressful experience, and one you can't forget.