I have no idea how this cartridge came in to existence. All I know is that, 30 years ago, my dad walked in to a used game store and picked this up. At the same time, he got a similar version of Pizza Chef (Still trying to get that one to work, it needs to be cleaned), a prototype of Off Your Rocker, the label free versions of Halloween and Texas Chainsaw Massacre, and a few other really rare titles.