Welcome to the second part of IGN64's in-depth look at Nintendo's failed disk drive add-on. If you haven't read our first installment in this three-part feature, be sure to give it a look before ...

Nintendo 64 icons include controllers, a Rumble Pak, an N64 console, and the elusive 64DD. Could this be a hint that 64DD titles are coming to Nintendo Switch ...

Nintendo forged ahead with plans for a disc-based expansion console that would sit underneath the standard N64. Ultimately, the plans failed and the so-called 64DD was never released outside of Japan.