6. Killswitch doesn't even exist any more
Experimental gaming is all the rage in 2012, but such was not the case in 1989 when the Karvina Corporation released Killswitch. The story goes that the adventure game had a fairly limited run in the late '80s, releasing between 5,000-10,000 copies, and had players choosing between two different characters: a wounded, shape-changing woman, or a powerful, invisible demon. The story followed an uprising of miners, weird ancient evils, and other super strange stuff. Oh, and the game has a tendency to erase itself. Completely. Details are scattered over what triggers this (completion or death), but either way, there are no playable copies left. And no one ever beat it as the demon.
That, alone, is fairly creepy, but it's the recent developments surrounding Killswitch that propels it from "mildly strange story about a weird Russian game" to "rocking back and forth and crying." Apparently, one sealed copy of the game was found in 2005 and sold for $733,000 to a Japanese man named Yamamoto Ryuichi. He intended to post gameplay footage of the game in order to finally bring it to the world, but only one clip has reportedly surfaced: a video of a ragged-looking Ryuichi sitting in front of his computer and crying. That footage, too, has since vanished... or never really existed at all.