Killswitch is an urban legend revolving around a game created by Soviet gaming company Karvina Corporation in 1989, in which the player had the choice of playing either Ghast, or Porto. It was nearly impossible to play as Ghast, as he was invisible fire demon, not only invisible to the NPCs but to the player themselves. This meant that pretty much everyone would chose Porto the alternative woman character in the game.
Killswitch was said to be an early example of the survival horror genre, like Myth or Silent Hill.However, the weird part is that no-one knows for sure, as the game supposedly deleted itself upon completion, and the game could not be copied. Only 5000 or so copies of the game were created, and eventually the game fell into obscurity. An intact copy of the game turned up on Ebay where it fetched $733,000 by a Japanese man named Yamamoto Ryuichi. Ryichi wanted to document his play-through of the game on YouTube, but the only video Ryuchi posted was of his gentle weeping while staring at his computer screen.
The reality is that Killswitch never existed, no-one has seen the supposed YouTube video. Although fans of the legend have made "reproduction" game versions of Killswitch, and there are videos on YouTube of people supposedly playing the game.
Weird Retro Fact: Other urban legends about gaming include, The Creepy Legend Of The Arcade Game Polybius, You Must Defeat Sheng Long To Stand A Chance and Retro Gaming: Bezerk Death.