Nintendo planned to release the 64DD in North America and even manufactured test units with fully translated BIOSes and functional region locking. However, the idea was ultimately dropped due to the add-on's low sales in Japan. Concrete proof of these plans wouldn't become public until 2016, when YouTuber Jason Lindsey (a.k.a. MetalJesusRocks) found a surviving test unit and verified its legitimacy with former Nintendo of America employee Mark DeLoura.