Platform: 64DD

The Nintendo 64DD is a disc drive add-on for the Nintendo 64 that was announced on the Shoshinkai game show (Space World Today) in Japan, talked about by Shigeru Miyamoto and released in Japan in 1999. It was never available outside of Japan.

There was a game by the name of Cabbage which was to be developed and released for the Nintendo 64DD, an expansion peripheral for the Nintendo 64. The project was helmed by Shigesato Itoi, creator of the Mother series, with other big name developers eventually being added on to help finish the project. Even with this help it would never see the light of day. It was said by Shigeru Miyamoto that, "the conversations and design techniques that popped up when we were making Cabbage are, of course, connected to Nintendogs and other things that we're doing now." Those "other things" most likely referring to Animal Crossing as it used many of the base elements said to have been made for Cabbage including the internal clock feature of the N64DD. To this day there are no known screenshots, videos, or demos of this cancelled game.

SimCopter 64 was a game announced by Maxis at E3 1997 which was meant to be a complimentary game to the later announced SimCity 64. It underwent a tumultuous development cycle that saw it change from a simple rescue mission game into something entirely different. There were also conflicting reports from both Nintendo and Maxis about what console it would be releasing on and the level of connectivity it would share with its counterpart SimCity 64. All of these issues ultimately ended in it fading out of the public eye and being silently cancelled as no more updates were given leading up to its supposed release window.

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.