Yeah, it’s kinda complicated. The Japan-only F-Zero X Expansion Pack for the ill-fated 64DD, had some cool stuff, and improvements, including a remix of Mario Kart 64’s Rainbow Road music added for the Rainbow Road stage.
The Zelda expansion probably would’ve been basically what Master Quest was, but maybe other new stuff too, who knows? There’s very little info on it. Though, some oddly assume it was a whole new game, even though Miyamoto isn’t usually interested in making sequels to games on the same platform. (In fact, “Super Mario Galaxy 2” was created on accident, it was originally just a special slightly expanded edition of SMG, but they accidentally made so many new stages, they decided to make it a new game instead.)
Sense Ocarina and StarFox 64 got remade for 3DS, I’m a li’l disapointed they didn’t try to remake F-Zero X with the Expansion Pack included as a bonus for 3DS.
Derpibooru costs over $25 a day to operate - help support us financially!