Nintendo 64DD
The 64DD (also known as the 64 Disk Drive) was a Japan-exclusive add-on for the Nintendo 64 co-developed by Nintendo and Alps Electric. The 64DD used floppy disks, offered larger amounts of storage compared to most cartridges, and plugged into the bottom of the console via the expansion port.
Plans were made to release the Disk Drive elsewhere, though after failing to make an impression in Japan the plans were cut. Its failure could perhaps be attributed to the lack of high-profile games for the hardware, its release late in the console’s life, and the multitude of unincluded but previously announced features. Some games previously announced with Disk Drive support were instead released without such support or were moved to competing consoles.
