According to Urban Legend, in the 1980s, there was an arcade game released in a single town that gave its players nightmares and insomnia. It was rumored to have been a beta version of a classic game that appeared later. The game later disappeared, and no proof of it being real exists. Many people claim to have a ROM but never back up their claims.
What is the name of this mythical game, what's the name of the company that supposedly made it, and what is the classic game that this mythical game is supposedly a beta for?