One of my favourite games, it was a very impressive title for the Game Boy at the time. It had an interesting development story, it started as a Game Boy port of Link to the Past, developed in off hours as a sort of passion project.
I remember having to download a text file guide, with dungeon layouts drawn in ASCII art, to get through a couple of the tricky bits.
The Switch port is worth checking out too, the graphical style is adorable.