If you really want nightmares, read the creepy pasta I linked.
That story gave me the most horrible uneasy feeling ever, and it took days for it to go away :/
the majora's mask creepy pasta? man that one was intense. have you seen the video of it?
Yeah, before the videos were broken/removed or accounts lost.
The story alone was enough to give that nasty feeling in your gut, but to have hacked roms to provide visual tangibility to it just made it stay there longer than it should have D:
Luckily I only have the virtual console version, so there's no looming sense of doom when I put a cartridge in.