The DD was planned to be released shortly after the original system but was delayed and was released during the Nintendo 64's dieing years. Nintendo predicted the peripheral would become a commercial failure so they decided to only sell it to a subscription service RANDnet and have only limited quantities of it in stores. Due to this only nine games were released others were cancelled or ported to the Nintendo Gamecube.
How to attachEdit
To attach you simply insert the top of the disk drive to the bottom of the Nintendo 64 (that closed slot).