Nintendo 64DD

The Nintendo 64DD (Nintendo 64 Disk Drive) was a machine that attached to a Nintendo 64 and could play games in a disc format. It ended up being a commercial failure, so it wasn't released outside Japan. There were several Mario games playable for this console, and several more that were cancelled. All of the Mario games were in the Mario Artist series. There were only 9 games released. There were also several peripherals used for it.

Mario Games
Released Cancelled
 * Mario Artist: Communication Kit
 * Mario Artist: Talent Studio
 * Mario Artist: Paint Studio
 * Mario Artist: Polygon Studio

Most games were either cancelled or later released on the Nintendo 64 cartridges. The following is a list of some of those games related to Mario or Donkey Kong:
 * Mario Artist: Game Maker
 * Mario Artist: Graphical Message Maker
 * Mario Artist: Sound Maker
 * Mario Artist: Video Jockey Maker
 * ''Super Mario 64 2
 * ''Super Mario RPG 2 (released in cartridge as Paper Mario in US)
 * ''Donkey Kong World
 * ''Ultra Donkey Kong (got reworked into Donkey Kong 64)