A little piece of gaming history has been uncovered this week, as a Reddit user has brought light to a game thought to no longer exist. Originally scheduled for release on the Nintendo 64 after its appearance at E3 1997, SimCopter 64 never found its way into final production. However, a picture was posted online of a prototype build playing on a Nintendo 64, only for it to promptly be removed by the owner a day later. Prior to deleting the post, the OP claimed that the development cartridge plays fine, but they're worried about it corrupting, and are currently looking into making a backup of the cart in order to preserve it. Footage of the game playing was also posted--and is now deleted as well--but it showed that the date on the build was December 26, 1997, a handful of months after its reveal at E3.