Has anyone ever thought of, or attempted this? Hack NES Zelda II into each CD-i Zelda, Faces of Evil and Wand of Gamelon? That might actually make good games out of them. Both games are side scrollers, like Zelda 2.
The third CDi Zelda, Zelda's Adventure, is top down, so the original NES or SNES Zelda would be used for that one.